среда, 27 марта 2019 г.

Volunteers wanted to help unlock the secrets of our Universe



An enhanced image of some of the galaxies from AstroQuest” for the ones with multiple galaxies.



An image of AstroQuest galaxy alongside how it looks in the AstroQuest platform once a citizen scientist has ‘helped’ the computer to identify what belongs to the main galaxy and what doesn’t. Credit: ICRAR/AstroQuest



An image of an AstroQuest galaxy alongside how it looks in the AstroQuest platform once a citizen scientist has helped the computer to identify what belongs to the main galaxy and what doesn’t. Credit: ICRAR/AstroQuest




An image of an AstroQuest galaxy alongside how it looks in the AstroQuest platform once a citizen scientist has helped the computer to identify what belongs to the main galaxy and what doesn’t. Credit: ICRAR/AstroQuest



An image of an AstroQuest galaxy alongside how it looks in the AstroQuest platform once a citizen scientist has helped the computer to identify what belongs to the main galaxy and what doesn’t. Credit: ICRAR/AstroQuest



Scientists are appealing for public help on one of the biggest astronomy projects of the next ten years.


In a new citizen science project launched today (March 22, 2019) — known as AstroQuest— researchers are looking for volunteers to study images of galaxies and figure out which light is coming from which galaxy.

“When you go outside and look up at the night sky, there’s a lot of black with all of the stars dotted around,” said astrophysicist Dr Luke Davies, from the University of Western Australia node of the International Centre for Radio Astronomy Research (ICRAR).


“But when you look with a really powerful telescope for a long time, you actually see that there are galaxies and stars everywhere, all over the sky.


“It’s really, really crowded, and all of these galaxies and stars overlap with each other.”


Dr Davies helps lead WAVES—or the Wide Area Vista ExtraGalactic Survey—a million-dollar international project and the biggest spectroscopic galaxy evolution survey ever undertaken.

He said WAVES needs to accurately measure the light coming from millions of galaxies.

“We use sophisticated computer algorithms to make sense of where the light is coming from in these crowded regions,” Dr Davies said.


“But the computer often gets it wrong. It’s simply no match for the human eye and brain.”


Dr Davies said professional astronomers have previously looked through all the galaxies and fixed the computer’s mistakes.


“But as more and more galaxies are surveyed, there simply aren’t enough people on our team to do it,” he said.


ICRAR citizen science project officer Lisa Evans said AstroQuest asks volunteers to take over from professional astronomers and check the computer’s work.


Where the computer has gotten it wrong, volunteers are asked to fix it.


“There’s never been a citizen science project quite like this before,” Ms Evans said.


“This is the first time we’ve got people actually painting over the galaxies and drawing in where they are.”


Ms Evans has also added game features to AstroQuest, including leaderboards, quests and achievements.


Dr Davies said knowing the amount of light that comes from a galaxy can tell us things like how many stars the galaxy currently has, how many stars it’s forming and how much dust is in it.

He said the team is ultimately trying to learn more about how galaxies in the early Universe evolved into the galaxies that we see today.


“If you map out millions of galaxies and measure all of their properties you can actually see how galaxies change as the Universe gets older. You can then explore how things like where a galaxy lives in the Universe and if it’s crashing into other galaxies affect how it evolves with time,” he says.

AstroQuest is a chance for anyone who’s interested in astronomy to be involved in one of the biggest scientific projects of the next ten years, Dr Davies said.


“You can essentially be at the forefront of scientific research and help out a huge million-dollar international project just by being at your computer and drawing over pictures of galaxies,” he said.

Register at astroquest.net.au.









More Information


The International Centre for Radio Astronomy Research (ICRAR) is a joint venture between Curtin University and The University of Western Australia with support and funding from the State Government of Western Australia.



Multimedia


Full resolution images available for download from here.



Contacts

Dr Luke Davies (ICRAR-UWA)
Ph: +61 466 277 672
Email: Luke.Davies@icrar.org


Pete Wheeler (Media Contact, ICRAR)
Ph: +61 423 982 018
Email: Pete.Wheeler@icrar.org





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2019 March 27 NGC 1333: Stellar Nursery in Perseus Image…


2019 March 27


NGC 1333: Stellar Nursery in Perseus
Image Credit & Copyright: Steve Milne, Barry WilsonProcessing: Steve Milne


Explanation: NGC 1333 is seen in visible light as a reflection nebula, dominated by bluish hues characteristic of starlight reflected by interstellar dust. A mere 1,000 light-years distant toward the heroic constellation Perseus, it lies at the edge of a large, star-forming molecular cloud. This striking close-up spans about two full moons on the sky or just over 15 light-years at the estimated distance of NGC 1333. It shows details of the dusty region along with telltale hints of contrasty red emission from Herbig-Haro objects, jets and shocked glowing gas emanating from recently formed stars. In fact, NGC 1333 contains hundreds of stars less than a million years old, most still hidden from optical telescopes by the pervasive stardust. The chaotic environment may be similar to one in which our own Sun formed over 4.5 billion years ago.


∞ Source: apod.nasa.gov/apod/ap190327.html


Ultra-sharp Images Make Old Stars Look Absolutely Marvelous!


Figure 1. Color composite GSAOI+GeMS image of HP 1 obtained using the Gemini South telescope in Chile. North is up and East to the left. Composite image produced by Mattia Libralato of the Space Telescope Science Institute. Credit: Gemini Observatory/AURA/NSF; composite image produced by Mattia Libralato of Space Telescope Science Institute.  Full resolution PNG



Figure 2. . GSAOI+GeMS color composite image of HP 1 (right image) shown relative to the full field of the cluster obtained by the Visible and Infrared Survey Telescope for Astronomy (left). Credit: Gemini Observatory/NSF/AURA/VISTA/Aladin/CDS.  Full resolution JPG




Using high-resolution adaptive optics imaging from the Gemini Observatory, astronomers have uncovered one of the oldest star clusters in the Milky Way Galaxy. The remarkably sharp image looks back into the early history of our Universe and sheds new insights on how our Galaxy formed.


Just as high-definition imaging is transforming home entertainment, it is also advancing the way astronomers study the Universe.


“Ultra-sharp adaptive optics images from the Gemini Observatory allowed us to determine the ages of some of the oldest stars in our Galaxy,” said Leandro Kerber of the Universidade de São Paulo and Universidade Estadual de Santa Cruz, Brazil. Kerber led a large international research team that published their results in the April 2019 issue of the Monthly Notices of the Royal Astronomical Society.


Using advanced adaptive optics technology at the Gemini South telescope in Chile, the researchers zoomed in on a cluster of stars known as HP 1. “Removing our atmosphere’s distortions to starlight with adaptive optics reveals tremendous details in the objects we study,” added Kerber. “Because we captured these stars in such great detail, we were able to determine their advanced age and piece together a very compelling story.”


That story begins just as the Universe was reaching its one-billionth birthday.


“This star cluster is like an ancient fossil buried deep in our Galaxy’s bulge, and now we’ve been able to date it to a far-off time when the Universe was very young,” said Stefano Souza, a PhD student at the Universidade de São Paulo, Brazil, who worked with Kerber as part of the research team. The team’s results date the cluster at about 12.8 billion years, making these stars among the oldest ever found in our Galaxy. “These are also some of the oldest stars we’ve seen anywhere,” added Souza.

“HP 1 is one of the surviving members of the fundamental building blocks that assembled our Galaxy’s inner bulge,” said Kerber. Until a few years ago, astronomers believed that the oldest globular star clusters — spherical swarms of up to a million stars — were only located in the outer parts of the Milky Way, while the younger ones resided in the innermost Galactic regions. However, Kerber’s study, as well as other recent work based on data from the Gemini Observatory and the Hubble Space Telescope (HST), have revealed that ancient star clusters are also found within the Galactic bulge and relatively close to the Galactic center.


Globular clusters tell us much about the formation and evolution of the Milky Way. Most of these ancient and massive stellar systems are thought to have coalesced out of the primordial gas cloud that later collapsed to form the spiral disk of our Galaxy, while others appear to be the cores of dwarf galaxies consumed by our Milky Way. Of the roughly 160 globular clusters known in our Galaxy, about a quarter are located within the greatly obscured and tightly packed central bulge region of the Milky Way. This spherical mass of stars some 10,000 light years across forms the central hub of the Milky Way (the yolk if you will) which is made primarily of old stars, gas, and dust. Among the clusters within the bulge, those that are the most metal-poor (lacking in heavier elements) – which includes HP 1 – have long been suspected of being the oldest. HP 1 then is pivotal, as it serves as an excellent tracer of our Galaxy’s early chemical evolution.


“HP 1 is playing a critical role in our understanding of how the Milky Way formed,” Kerber said. “It is helping us to bridge the gap in our understanding between our Galaxy’s past and its present.”

Kerber and his international team used the exquisitely deep high-resolution adaptive optics images from Gemini Observatory as well as archival optical images from the HST to identify faint cluster members, which are essential for age determination. With this rich data set they confirmed that HP 1 is a fossil relic born less than a billion years after the Big Bang, when the Universe was in its infancy.

“These results crown an effort of more than two decades with some of the world’s premier telescopes aimed at determining accurate chemical abundances with high-resolution spectroscopy,” said Beatriz Barbuy of the Universidade de São Paulo, coauthor of this paper and a world-renowned expert in this field. “These Gemini images are the best ground-based photometric data we have. They are at the same level of HST data, allowing us to recover a missing piece in our puzzle: the age of HP 1. From the existence of such old objects, we can attest to the short star formation timescale in the Galactic bulge, as well as its fast chemical enrichment.”


To determine the cluster’s distance, the team used archival ground-based data to identify 11 RR Lyrae variable stars (a type of “standard candle” used to measure cosmic distances) within HP 1. The observed brightness of these RR Lyrae stars indicate that HP 1 is at a distance of about 21,500 light years, placing it approximately 6,000 light years from the Galactic center, well within the Galaxy’s central bulge region.

Kerber and his team also used the Gemini data, as well HST, Very Large Telescope, and Gaia mission data, to refine the orbit of HP 1 within our Galaxy. This analysis shows that during HP 1’s history, the cluster came as close as about 400 light years from the Galactic center – less than one-tenth of its current distance.


“The combination of high angular resolution and near-infrared sensitivity makes GeMS/GSAOI an extremely powerful tool for studying these compact, highly dust-enshrouded stellar clusters,” added Mattia Libralato of the Space Telescope Science Institute, a coauthor on the study. “Careful characterization of these ancient systems, as we’ve done here, is paramount to refine our knowledge of our Galaxy’s formation.”


Chris Davis, Program Officer at the National Science Foundation (NSF) for Gemini, commented, “These fabulous results demonstrate why the development of wide-field, high-resolution imaging at Gemini is key to the Observatory’s future. The recent NSF award to support the development of a similar system at Gemini North will make routine super-sharp imaging from both hemispheres a reality. These are certainly exciting times for the Observatory.”


The Gemini observations resolve stars to about 0.1 arcsecond which is one 36 thousandths of a degree and comparable to separating two automobile headlamps from approximately 1,500 miles, or 2,500 kilometers, away (the distance from Manaus to Sao Paulo in Brazil, or from San Francisco to Dallas in the USA). This resolution was obtained using the Gemini South Adaptive Optics Imager (GSAOI) – a near-infrared adaptive optics camera used with the Gemini Multi-conjugate adaptive optics System (GeMS). GeMS is an advanced adaptive optics system utilizing three deformable mirrors to correct for distortions imparted on starlight by turbulence in layers of our atmosphere.



Media Contact:

Peter Michaud
Public Information and Outreach manager
Gemini Observatory
Email: pmichaud@gemini.edu
Desk: 808-974-2510
Cell: 808-936-6643


Science Contacts:

Leandro Kerber
Universidade Estadual de Santa Cruz, Brazil
Email: lokerber@uesc.br
Cell: +55 11 94724-6073
Desk: +55 73 3680-5167 





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Chalcantite | #Geology #GeologyPage #Mineral Locality: Maria…


Chalcantite | #Geology #GeologyPage #Mineral


Locality: Maria Josefa mine, Rodalquilar, Almería, Andalusia, Spain.


Specimen size: 40 x 30 mm


Photo Copyright © C.P. minerals


Geology Page

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https://www.instagram.com/p/Bve_g5il2sH/?utm_source=ig_tumblr_share&igshid=b8myds2e26tv


Quadrops flexuosa Trilobite | #Geology #GeologyPage…


Quadrops flexuosa Trilobite | #Geology #GeologyPage #Trilobite


Age: Devonian

Location: El Oftal Formation, , Jebel Ofaténe, Morocco

Size: 7.5 cm


Photo Copyright © American Museum of Natural History


Geology Page

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https://www.instagram.com/p/BvgHeYrlgq2/?utm_source=ig_tumblr_share&igshid=12d2ok4ijek6e


Polished Azurite hemisphere with Some minor Malachite | #Geology…


Polished Azurite hemisphere with Some minor Malachite | #Geology #GeologyPage #Mineral


Locality: Poteryaevskoe Mine, Rubtsovskoe Cu-Zn-Pb deposit, Rudnyi Altai, Altaiskii Krai, Western-Siberian Region, Russia


Size: 34mm x 30mm x 14mm


Photo Copyright © Quebul Fine Minerals


Geology Page

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https://www.instagram.com/p/BvgHqxnlWUS/?utm_source=ig_tumblr_share&igshid=16b8atw74exxh


Rhodochrosite specimen with transparent Quartz | #Geology…


Rhodochrosite specimen with transparent Quartz | #Geology #GeologyPage #Mineral


Locality: San Antonio Mine, East Camp, Santa Eulalia District, Mun. de Aquiles Serdan, Chihuahua, Mexico


Size: 21mm x 12mm x 15mm


Photo Copyright © Quebul Fine Minerals


Geology Page

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https://www.instagram.com/p/BvgIILNFXVH/?utm_source=ig_tumblr_share&igshid=a4kgpwlw7smi


Erythrite ,Phlogopite, Quartz | #Geology #GeologyPage…


Erythrite ,Phlogopite, Quartz | #Geology #GeologyPage #Mineral


Locality: Tazalarht mining area, Taroudant Province, Souss-Massa Region, Morocco


Size: 26mm x 20mm x 22mm


Photo Copyright © Quebul Fine Minerals


Geology Page

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https://www.instagram.com/p/BvgINjyFx0Y/?utm_source=ig_tumblr_share&igshid=yrc57uuxbp31


Polished Azurite Hemisphere | #Geology #GeologyPage…


Polished Azurite Hemisphere | #Geology #GeologyPage #Mineral


Locality: Poteryaevskoe Mine, Rubtsovskoe Cu-Zn-Pb deposit, Rudnyi Altai, Altaiskii Krai, Western-Siberian Region, Russia


Size: 38mm x 31mm x 12mm


Photo Copyright © Quebul Fine Minerals


Geology Page

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https://www.instagram.com/p/BvgISTWFQB6/?utm_source=ig_tumblr_share&igshid=2avvfuly05wg


LHCb experiment discovers a new pentaquark


CERN – European Organization for Nuclear Research logo.


26 March, 2019


The LHCb collaboration has observed a new pentaquark particle and has confirmed the pentaquark structure previously reported 



Image above: Illustration of the possible layout of the quarks in a pentaquark particle such as those discovered at LHCb. The five quarks might be tightly bonded or assembled differently, see image below (Image: CERN).


The LHCb collaboration has announced the discovery of a new pentaquark particle. The particle, named Pc(4312)+, decays to a proton and a J/ψ particle (composed of a charm quark and an anticharm quark). This latest observation has a statistical significance of 7.3 sigma, passing the threshold of 5 sigma traditionally required to claim a discovery of a new particle.


In the conventional quark model, composite particles can be either mesons formed of quark–antiquark pairs or baryons formed of three quarks. Particles not classified within this scheme are known as exotic hadrons. When Murray Gell-Mann proposed the quark model in his fundamental 1964 paper, he mentioned the possibility of exotic hadrons such as pentaquarks, but it took 50 years to demonstrate their existence experimentally. In July 2015, the LHCb collaboration reported the Pc(4450)+ and Pc(4380)+ pentaquark structures. The new particle is a lighter companion to these pentaquark structures and its existence sheds new light into the nature of the entire family.



Image above: Illustration of the possible layout of the quarks in a pentaquark particle such as those discovered at LHCb. The five quarks might be assembled into a meson (one quark and one antiquark) and a baryon (three quarks), weakly bound together (Image: Daniel Dominguez/CERN).


The analysis presented today at the Rencontres de Moriond quantum chromodynamics (QCD) conference used nine times more data from the Large Hadron Collider than the 2015 analysis. The data set was first analysed in the same way as before and the parameters of the previously reported Pc(4450)+ and Pc(4380)+ structures were consistent with the original results. As well as revealing the new Pc(4312)+ particle, the analysis also uncovered a more complex structure of Pc(4450)+ consisting of two narrow overlapping peaks, Pc(4440)+ and Pc(4457)+, with the two-peak structure having a statistical significance of 5.4 sigma. More experimental and theoretical study is still needed to fully understand the internal structure of the observed states.


Read more on the LHCb website: http://lhcb-public.web.cern.ch/lhcb-public/Welcome.html#Pentaq


Note:


CERN, the European Organization for Nuclear Research, is one of the world’s largest and most respected centres for scientific research. Its business is fundamental physics, finding out what the Universe is made of and how it works. At CERN, the world’s largest and most complex scientific instruments are used to study the basic constituents of matter — the fundamental particles. By studying what happens when these particles collide, physicists learn about the laws of Nature.


The instruments used at CERN are particle accelerators and detectors. Accelerators boost beams of particles to high energies before they are made to collide with each other or with stationary targets. Detectors observe and record the results of these collisions.


Founded in 1954, the CERN Laboratory sits astride the Franco–Swiss border near Geneva. It was one of Europe’s first joint ventures and now has 23 Member States.


Related articles:


LHCb sees a new flavour of matter–antimatter asymmetry
https://orbiterchspacenews.blogspot.com/2019/03/lhcb-sees-new-flavour-of.html


ATLAS observes light scattering off light
https://orbiterchspacenews.blogspot.com/2019/03/atlas-observes-light-scattering-off.html


Related links:


LHCb collaboration: https://home.cern/science/experiments/lhcb


Rencontres de Moriond quantum chromodynamics (QCD): http://moriond.in2p3.fr/2019/QCD/


Large Hadron Collider (LHC): https://home.cern/science/accelerators/large-hadron-collider


For more information about European Organization for Nuclear Research (CERN), Visit: https://home.cern/


Images (mentioned), Text, Credits: CERN.


Best regards, Orbiter.chArchive link


The largest delta plain in Earth’s history…


The largest delta plain in Earth’s history http://www.geologypage.com/2019/03/the-largest-delta-plain-in-earths-history.html


Fossil barnacles reveal prehistoric whale migrations…


Fossil barnacles reveal prehistoric whale migrations http://www.geologypage.com/2019/03/fossil-barnacles-reveal-prehistoric-whale-migrations.html


The solid Earth breathes…


The solid Earth breathes http://www.geologypage.com/2019/03/the-solid-earth-breathes.html


Mystery shrouding oldest animal fossils solved…


Mystery shrouding oldest animal fossils solved http://www.geologypage.com/2019/03/mystery-shrouding-oldest-animal-fossils-solved.html


Earth’s deep mantle flows dynamically…


Earth’s deep mantle flows dynamically http://www.geologypage.com/2019/03/earths-deep-mantle-flows-dynamically.html


Cool Earth theory sheds more light on diamonds…


Cool Earth theory sheds more light on diamonds http://www.geologypage.com/2019/03/cool-earth-theory-sheds-more-light-on-diamonds.html


Space Station Science Highlights: Week of March 18, 2019


ISS – Expedition 59 Mission patch.


March 26, 2019


Last week on the International Space Station, Expedition 58 crew members were joined by those of Expedition 59. Once again at a full complement of six, the crew conducted science experiments and prepared for the first of three planned space walks. It took place on Friday, with NASA Flight Engineers Anne McClain and Nick Hague performing battery upgrade work.



Image above: NASA astronaut Christina Koch wears a virtual reality headset for the Vection study to explore how microgravity affects an astronaut’s perception of motion, orientation, and distance. Image Credit: NASA.


Read more about some of the science conducted during the week of March 18 on the space station:


Blood samples help battle bone loss


The crew collected blood samples for the JAXA Medical Proteomics investigation. It evaluates changes in proteins in blood serum, bone, and skeletal muscles after space flight, and supports identification of those related to osteopenia or early bone loss. Data from the space-flown mice helps clarify the relationship between osteopenia in microgravity and osteoporosis on the ground. Use of these marker proteins may benefit future assessment of the health of astronauts and osteoporosis patients on Earth.


Detecting neutrons aboard the space station


RADI-N2, a Canadian Space Agency investigation, seeks to characterize the neutron environment aboard the space station, define the risk it poses to the crew, and provide data to develop better protective measures for future spaceflights. Neutrons make up 10 to 30 percent of the biologically effective radiation exposure in low-Earth orbit. The bubble detectors used in the investigation detect only neutrons and ignore all other types of radiation. This week, the crew deployed six detectors in the NOD3F3 Rack, one in the crew member sleeping area, and one in a pouch worn by the crew.


Visual perception in space


The crew performed experiment sessions for Vection this week. These sessions include three tasks: orientation perception, relative height or motion processing, and depth perception or vection (the visual illusion that makes someone think they are moving when they are actually still but can see the world moving past them).



Animation above: NASA astronaut Christina Koch wears a virtual reality headset for the Vection study. Image Credit: NASA.


Results help determine how microgravity may disrupt an astronaut’s ability to visually interpret motion, orientation, and distance. It also looks at how that ability may adapt during space travel and then change upon return to Earth, using multiple experimental time points during flight and post-flight.


Students talk to astronauts


North Point School for Boys in Calgary, Alberta, Canada, where students range from kindergarten to ninth grade, spoke with the crew during an Amateur Radio on ISS or ISS HAM contact. Students asked questions about astronaut training, their daily routines, and Extravehicular Activity (EVA) activities or spacewalks. ISS Ham Radio engages students, teachers, parents and other members of the community in science, technology, engineering and math through direct communication between astronauts and ground HAM radio units.



Image above: close up of plant seedlings that have sprouted and started growing inside a cushioned “plant pillow”. A crew member adds water to a VEG-03H small plant pillow. This investigation uses the Veggie plant growth facility to cultivate Extra Dwarf Pak Choi and Wasabi mustard for harvest on-orbit, one step closer to growing food in space for long-duration missions. Image Credit: NASA.


Other investigations on which the crew performed work:


– The Behavioral Core Measures investigation analyzes whether a standardized suite of measurements can rapidly and reliably assess the risk of adverse cognitive or behavioral conditions and psychiatric disorders during long-duration spaceflight: https://www.nasa.gov/mission_pages/station/research/experiments/explorer/Investigation.html?#id=7537


– Standard Measures captures a consistent, optimized, and minimal set of measures from crew members throughout the ISS Program in order to characterize adaptive responses to and risks of living in space: https://www.nasa.gov/mission_pages/station/research/experiments/explorer/Investigation.html?#id=7711


– Time Perception quantifies the subjective changes in time perception that people experience during and after long-duration exposure to microgravity: https://www.nasa.gov/mission_pages/station/research/experiments/explorer/Investigation.html?#id=7504


– A virtual reality film documenting daily life aboard the space station, ISS Experience educates a variety of audiences about life aboard the orbiting lab and science conducted there. This week’s footage included docking of the Soyuz: https://www.nasa.gov/mission_pages/station/research/experiments/explorer/Investigation.html?#id=7877


– Future long-duration space missions will require crew members to grow their own food, and Veg-03H uses the Veggie plant growth facility to cultivate Extra Dwarf Pak Choi and Wasabi mustard for harvest on-orbit: https://www.nasa.gov/mission_pages/station/research/experiments/explorer/Investigation.html?#id=1159


– The Team Task Switching investigation examines whether crew members have difficulty switching tasks and determines the effects of these switches in order to both reduce any negative consequences and improve individual and team motivation and effectiveness: https://www.nasa.gov/mission_pages/station/research/experiments/explorer/Investigation.html?#id=7538


– The Combustion Integrated Rack (CIR) includes an optics bench, combustion chamber, fuel and oxidizer control, and five different cameras for performing combustion investigations in microgravity: https://www.nasa.gov/mission_pages/station/research/experiments/explorer/Facility.html?#id=317


– Lighting Effects studies the effects of replacing fluorescent light bulbs on the space station with solid-state light-emitting diodes (LEDs): https://www.nasa.gov/mission_pages/station/research/experiments/explorer/Investigation.html?#id=2013


– The long-term Marrow study looks at the negative effects of microgravity on the bone marrow and the blood cells it produces: https://www.nasa.gov/mission_pages/station/research/experiments/explorer/Investigation.html?#id=1673



Space to Ground: Stepping Out: 03/22/2019

Related links:


Expedition 59: https://www.nasa.gov/mission_pages/station/expeditions/expedition59/index.html


JAXA Medical Proteomics: https://www.nasa.gov/mission_pages/station/research/experiments/explorer/Investigation.html?#id=7590


RADI-N2: https://www.nasa.gov/mission_pages/station/research/experiments/explorer/Investigation.html?#id=874


Vection: https://www.nasa.gov/mission_pages/station/research/experiments/explorer/Investigation.html?#id=7484


ISS HAM: https://www.nasa.gov/mission_pages/station/research/experiments/explorer/Investigation.html?#id=337


Spot the Station: https://spotthestation.nasa.gov/


Space Station Research and Technology: https://www.nasa.gov/mission_pages/station/research/index.html


International Space Station (ISS): https://www.nasa.gov/mission_pages/station/main/index.html


Images (mentioned), Animation (mentioned), Video (NASA), Text, Credits: NASA/Michael Johnson/Jorge Sotomayor, Lead Increment Scientist Expeditions 58/59.


Best regards, Orbiter.chArchive link


Spacewalkers Swapping Places; Crew Studies Brain and Muscles


ISS – Expedition 59 Mission patch.


March 26, 2019


A pair of astronauts are trading places on the next two spacewalks as the Expedition 59 crew continues upgrades and maintenance outside of the International Space Station. The orbital residents are also conducting space research to improve life for humans on and off Earth.


NASA announced Monday that Flight Engineer Nick Hague is joining fellow NASA astronaut Christina Koch on this Friday’s spacewalk. The duo will continue swapping old nickel-hydrogen batteries with new lithium-ion batteries on the station’ Port-4 truss structure. Hague and astronaut Anne McClain performed the exact same work last week on the other side of the truss structure.



Image above: NASA astronaut Nick Hague, seemingly curtained by the International Space Station’s solar arrays, retrieves batteries and adapter plates from an external pallet. He and NASA astronaut Anne McClain (out of frame) conducted a six-hour. 39-minute spacewalk to upgrade the orbital complex’s power storage capacity on the Port-4 truss structure. Image Credit: NASA TV.


Hague is swapping places with McClain this Friday due to a spacesuit-sizing issue. McClain is tentatively planned to go outside on an April 8 spacewalk with Canadian Space Agency astronaut David Saint-Jacques. The spacewalkers will install truss jumpers to provide secondary power to the Canadarm2 robotic arm.



International Space Station (ISS). Animation Credit: NASA

McClain and Hague successfully installed new lithium-ion batteries during a spacewalk on March 22. Ground teams checked out the power channel immediately after the spacewalk with no issues. Over the weekend, attempts to recharge one of the batteries were unsuccessful. Engineers on the ground are continuing to identify the cause of the issue and explore possible solutions. There has been no impact to standard space station operations.


Science work is always ongoing aboard the orbital lab with the crew researching blood flow to the brain and muscle adaptation in space.



Image above: Sunset over Pays Basque (Spain), seen by EarthCam on ISS, speed: 27’618 Km/h, altitude: 412,89 Km, image captured by Roland Berga (on Earth in Switzerland) from International Space Station (ISS) using ISS-HD Live application with EarthCam’s from ISS on March 25, 2019 at 19:17 UTC. Image Credits: Orbiter.ch Aerospace/Roland Berga.


Hague spent a couple of hours this morning in the Kibo lab module measuring his arterial blood pressure using waveform data. The results will inform the Cerebral Autoregulation experiment that observes the brain’s blood vessels in microgravity.


Hague then joined Koch and collected leg, shoulder and back measurements for the Myotones muscle study in the Columbus lab module. Results could improve muscle rehabilitation techniques on Earth and in space.


Related article:


NASA Updates Spacewalk Assignments, Announces Final Preview Briefing
https://orbiterchspacenews.blogspot.com/2019/03/nasa-updates-spacewalk-assignments.html


Related links:


Expedition 59: https://www.nasa.gov/mission_pages/station/expeditions/expedition59/index.html


Port-4 truss structure: https://www.nasa.gov/mission_pages/station/structure/elements/truss-structure


Canadarm2 robotic arm: https://www.nasa.gov/mission_pages/station/structure/elements/mobile-servicing-system.html


Kibo lab module: https://www.nasa.gov/mission_pages/station/structure/elements/japan-kibo-laboratory


Cerebral Autoregulation: https://www.nasa.gov/mission_pages/station/research/experiments/explorer/Investigation.html?#id=1938


Myotones: https://www.nasa.gov/mission_pages/station/research/experiments/explorer/Investigation.html?#id=7573


Columbus lab module: https://www.nasa.gov/mission_pages/station/structure/elements/europe-columbus-laboratory


Space Station Research and Technology: https://www.nasa.gov/mission_pages/station/research/index.html


International Space Station (ISS): https://www.nasa.gov/mission_pages/station/main/index.html


Images (mentioned), Animation (mentioned), Text, Credits: NASA/Mark Garcia/Orbiter.ch Aerospace/Roland Berga.


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