| UPDATED: 15:02, Tue, Feb 9, 2021
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Supernovas come in various shapes and sizes but are widely regarded as the Universe s biggest fireworks. Astronomers originally classified these as either Type I or Type II supernovas although today we know there are many more types with their own quirks. One such classification is a Type Ia supernova, which involves a white dwarf - the hot core of a star that has shed its outer layers - being ripped apart by a runaway thermonuclear reaction caused by the star merging with or siphoning too much material from a nearby companion.
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IMAGE: This composite image of X-ray data from Chandra (blue) and radio emission from the Very Large Array (red) contains the first evidence for a rare type of supernova in the. view more
Credit: X-ray: NASA/CXC/Nanjing Univ./P. Zhou et al. Radio: NSF/NRAO/VLA
Astronomers may have found our galaxy s first example of an unusual kind of stellar explosion. This discovery, made with NASA s Chandra X-ray Observatory, adds to the understanding of how some stars shatter and seed the universe with elements critical for life on Earth.
This intriguing object, located near the center of the Milky Way, is a supernova remnant called Sagittarius A East, or Sgr A East for short. Based on Chandra data, astronomers previously classified the object as the remains of a massive star that exploded as a supernova, one of many kinds of exploded stars that scientists have catalogued.
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SAN FRANCISCO, CA December 10, 2020 Calcific aortic valve disease is not only the most common valve disease in the elderly, it s also the third leading cause of heart disease overall. For those affected, calcium starts to accumulate in their heart valves and vessels over time, until they harden like bone. As a result, blood flow out of the heart s pumping chamber to the body gets obstructed, leading to heart failure. Yet no medical therapy currently exists. All patients can do is wait for the calcification (or hardening) to become bad enough that they need surgery to replace their valve.
After 15 years of unrelenting work, a team of scientists from Gladstone Institutes has now discovered a potential drug candidate for heart valve disease that works in both human cells and animals and is ready to move toward a clinical trial. Their findings were just published in the journal