astrobites 18 Feb 2021, 16:08 UTC In 1987 astronomers witnessed the closest supernova in almost 400 years, subsequently called SN 1987A. At only 51.4 kilo-parsecs (or about 167,000 light years), SN 1987A’s home is in the Large Magellanic Cloud, and was visible in the Southern Hemisphere with the naked eye for a few months before it faded. But one question that remains unanswered is what kind of object was left behind. The original star that created SN 1987A was a blue supergiant, which would have left behind either a black hole or a neutron star. Yet even with decades of observations by many telescopes spanning the electromagnetic spectrum, its nature has yet to be confirmed.
Universe Today 17 Feb 2021, 16:17 UTC When it comes to Mars exploration, NASA has more success than any other agency. This week, they’ll attempt to land another sophisticated rover on the Martian surface to continue the search for evidence of ancient life. The Mars Perseverance rover will land on Mars on Thursday, February 18th, and it’s bringing some very ambitious technologies with it.
Starts With a Bang! 17 Feb 2021, 15:02 UTC Debris from Pluto-sized collisions, not aliens, are streaming throug the galaxy.
Starts With a Bang! 15 Feb 2021, 15:02 UTC NASA's SOFIA mission is upgraded and back in action.
EarthSky Blog 15 Feb 2021, 10:05 UTC Alpha Centauri is the closest star system to our sun. The inset image shows the two primary stars, A and B (a 3rd star, Proxima, lies some distance away). A new study shows that a planet might lie within the habitable zone of Alpha Centauri A
Many Worlds 12 Feb 2021, 15:27 UTC Scientists have long held that many of the important compounds and elements that make life possible on Earth arrived here after the planet was formed and was orbiting the sun. These molecules came via meteorites and comets, it was thought, from the colder regions beyond Jupiter.