воскресенье, 30 сентября 2018 г.

What are the most precious stones?…


What are the most precious stones? http://www.geologypage.com/2018/09/what-are-the-most-precious-stones.html


Azurite | #Geology #GeologyPage #Mineral Locality: Milpillas…


Azurite | #Geology #GeologyPage #Mineral


Locality: Milpillas Mine, Cuitaca, Mun. de Santa Cruz, Sonora, Mexico


Size: 5.6 x 4.6 x 2.5


Photo Copyright © Saphira Minerals


Geology Page

http://www.geologypage.com

https://www.instagram.com/p/BoWpdKLF1G4/?utm_source=ig_tumblr_share&igshid=1pz55ezs3l24o


Liddicoatite | #Geology #GeologyPage #Mineral Locality:…


Liddicoatite | #Geology #GeologyPage #Mineral


Locality: Estatoby, Sahatana Valley, Antananarivo Prov., Madagascar


Size: 26 x 9.4 x 9.5


Photo Copyright © Saphira Minerals


Geology Page

www.geologypage.com

https://www.instagram.com/p/BoW1W-dF6Fd/?utm_source=ig_tumblr_share&igshid=l2xwl39wot1i


Silver | #Geology #GeologyPage #Mineral Locality: Himmelsfürst…


Silver | #Geology #GeologyPage #Mineral


Locality: Himmelsfürst Mine, Freiberg, Erzgebirge, Saxony, Germany


Size: 7.1 x 2.4 x 2.9


Photo Copyright © Saphira Minerals


Geology Page

www.geologypage.com

https://www.instagram.com/p/BoW1uAElu8V/?utm_source=ig_tumblr_share&igshid=1i6ytzu4jr88z


2018 September 30 The Lonely Neutron Star in Supernova Remnant…


2018 September 30


The Lonely Neutron Star in Supernova Remnant E0102-72.3
Credit: X-ray (NASA/CXC/ESO/F. Vogt et al.); Optical (ESO/VLT/MUSE & NASA/STScI)


Explanation: Why is this neutron star off-center? Recently a lone neutron star has been found within the debris left over from an old supernova explosion. The “lonely neutron star” in question is the blue dot at the center of the red nebula near the bottom left of E0102-72.3. In the featured image composite, blue represents X-ray light captured by NASA’s Chandra Observatory, while red and green represent optical light captured by ESO’s Very Large Telescope in Chile and NASA’s Hubble Space Telescope in orbit. The displaced position of this neutron star is unexpected since the dense star is thought to be the core of the star that exploded in the supernova and created the outer nebula. It could be that the neutron star in E0102 was pushed away from the nebula’s center by the supernova itself, but then it seems odd that the smaller red ring remains centered on the neutron star. Alternatively, the outer nebula could have been expelled during a different scenario – perhaps even involving another star. Future observations of the nebulas and neutron star appear likely to resolve the situation.


∞ Source: apod.nasa.gov/apod/ap180930.html


Stress-free Discovery Lurking inside each of your organs is a…


Stress-free Discovery


Lurking inside each of your organs is a whole world of life. Millions of bacteria mill around, helping, harming, or simply observing our body’s many processes. It’s easy to misattribute any influence these hidden passengers might have on other things. For example, for decades we thought peptic ulcers and stomach inflammation were largely caused by stress and lifestyle. But when a researcher in the early 1980s noticed groups of an unfamiliar bacteria in samples from patients’ stomachs, it opened the door to other possibilities. Barry Marshall, pictured and born on this day in 1951, delved deeper and discovered Helicobacter pylori (right), a bacterium that turned out to be very prevalent and the actual cause of peptic ulcers. With that revelation, which won Marshall a share of a 2015 Nobel Prize, these chronic and debilitating illnesses at once became treatable, and the crucial link between infection, inflammation, and ultimately cancer became clear.


Written by Anthony Lewis



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NASA’s 60th Anniversary: Home, Sweet HomeEarth is a complex,…


NASA’s 60th Anniversary: Home, Sweet Home


Earth is a complex, dynamic system. For 60 years, we have studied our changing planet, and our understanding continues to expand with the use of new technologies. With data from satellites, instruments on the International Space Station, airborne missions, balloons, and observations from ships and on land, we track changes to land, water, ice, and the atmosphere. Application of our Earth observations help improve life now and for future generations. Since we opened for business on Oct. 1, 1958, our history tells a story of exploration, innovation and discoveries. The next 60 years, that story continues. Learn more: https://www.nasa.gov/60


Make sure to follow us on Tumblr for your regular dose of space: http://nasa.tumblr.com.


Delaying Alzheimer’s Disease Damage to neurons begins…


Delaying Alzheimer’s Disease


Damage to neurons begins years, perhaps even a decade, before people display the first symptoms of Alzheimer’s disease. Optimal treatment would halt this damage and prevent the onset of symptoms, keeping people healthy. New research shows that drug treatment can reduce neuron damage in mice before amyloid plaques develop. Neurons in the brain are unusual because they don’t typically divide to create new, daughter cells. However, in Alzheimer’s disease, neurons attempt to do just that. Mouse neurons beginning to divide are shown here, in red-blue. It’s known that dividing neurons often die. This study identified that calcium drives neurons to divide when it enters through channels on their surface. These calcium channels were blocked by the drug memantine, which has already been approved for use to treat Alzheimer’s symptoms in the United States. This research suggests that memantine might one day help to prevent Alzheimer’s disease.


September is Alzheimer’s Awareness Month


Written by Deborah Oakley



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