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ScienceDaily: Space & Time News |
| How a supermassive black hole originates Posted: 16 Jun 2021 11:32 AM PDT How do supermassive black holes in the early universe originate? A team led by a theoretical physicist has come up with an explanation: a massive seed black hole that the collapse of a dark matter halo could produce. |
| The give and take of mega-flares from stars Posted: 16 Jun 2021 11:32 AM PDT The long relationships between stars and the planets around them - including the Sun and the Earth - may be even more complex than previously thought. This is one conclusion of a new study involving thousands of stars using NASA's Chandra X-ray Observatory. |
| Mystery solved: Dust cloud led to Betelgeuse's 'Great Dimming' Posted: 16 Jun 2021 08:38 AM PDT When Betelgeuse, a bright orange star in the constellation of Orion, lost more than two-thirds of its brightness in late 2019 and early 2020, astronomers were puzzled. |
| When testing Einstein's theory of general relativity, small modeling errors add up fast Posted: 16 Jun 2021 08:38 AM PDT Small modeling errors may accumulate faster than previously expected when physicists combine multiple gravitational wave events (such as colliding black holes) to test Albert Einstein's theory of general relativity, suggest researchers. |
| ALMA discovers earliest gigantic black hole storm Posted: 16 Jun 2021 06:40 AM PDT Astronomers have discovered a titanic galactic wind driven by a supermassive black hole 13.1 billion years ago. This is the earliest-yet-observed example of such a wind to date and is a telltale sign that huge black holes have a profound effect on the growth of galaxies from the very early history of the Universe. |
| Space scientists solve a decades-long gamma-ray burst puzzle Posted: 16 Jun 2021 06:40 AM PDT Astrophysicists find the magnetic field in gamma-ray bursts is scrambled after the ejected material crashes into, and shocks, the surrounding medium. |
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