Scientific American 31 Mar 2021, 13:00 UTC Astronomers are hunting for the first moon around a planet beyond our solar system
New Scientist 31 Mar 2021, 12:00 UTC Hints of a hefty source of gravity beyond Pluto sparked the search for a possible “Planet Nine”. Now, some astronomers think it could instead be a black hole from the big bang, offering a rare glimpse into the early universe.
Universe Today 30 Mar 2021, 19:48 UTC Lava tubes on the moon are some of the most interesting, and difficult, places to explore in the solar system. But if humanity plans to eventually have a permanent presence on the moon, the more knowledge we have about the cave systems created by those lava tubes the better.
New Scientist 30 Mar 2021, 16:10 UTC The inside of the moon may be wetter than we thought. Some dried lava flows on the moon seem to have far more water than their surrounding areas, and that water probably came from the moon’s mantle, which was once thought to be mostly dry.
Bad Astronomy 30 Mar 2021, 13:00 UTC The birth cry of a distant black hole may have revealed the existence of a closer, much more massive black hole, part of a population of these beasts that is proving devilishly difficult to find.
Centauri Dreams 29 Mar 2021, 16:18 UTC The ‘Big Whack,’ as I’ve heard it called, is the impact of a planetary embryo of perhaps Mars-size (or larger) that is thought to have struck the Earth during the latter era of planet formation. Or we can call it the ‘Giant Impact,’ as Arizona State scientists did in a presentation at the virtual Lunar and Planetary Science Conference recently concluded. Whatever the name, the event offers a model for the formation of the Moon, one that explains the latter’s small iron core and the anomalous high degree of angular momentum of the Earth-Moon system.
Bad Astronomy 29 Mar 2021, 13:00 UTC Not too far away in galactic terms — 187 light years from us — is the remains of a dead star. It was once like the Sun, though perhaps six or so times more massive, and 400 million years ago it reached the end of its mainstream life. It swelled into a red giant, cast off its outer layers, and eventually lost so much material it exposed its hot, dense core to space.
International Dark Sky Association 29 Mar 2021, 00:01 UTC Scientists reported new research results today suggesting that artificial objects in orbit around the Earth are brightening night skies on our planet more than previously understood.
SciTech Daily 27 Mar 2021, 06:01 UTC In the first all-sky survey by the eROSITA X-ray telescope onboard SRG, astronomers at the Max Planck Institute for Extraterrestrial Physics have identified a previously unknown supernova remnant, dubbed “Hoinga.” The finding was confirmed in archival radio data and marks the first discovery of a joint Australian-eROSITA partnership established to explore our Galaxy using multiple wavelengths, from low-frequency radio waves to energetic X-rays. The Hoinga supernova remnant is very large and located far from the galactic plane – a surprising first finding – implying that the next years might bring many more discoveries.