65 million years ago, a massive asteroid struck Earth, causing a mass extinction. Without advance warning, could anyone have spotted it?Continue reading on Starts With A Bang! »
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Scientists have identified new clues that could help astronomers spot one of the most famous hypothetical alien megastructures: a Dyson sphere. The study finds that red dwarfs and white dwarfs are the most promising stars to examine, since advanced . ...
Odd radio circles are huge unexplained rings, over 50 times the Milky Way's width, seen only at radio wavelengths.
With ~400 billion stars in the Milky Way and 6-20 trillion galaxies overall, that makes for a lot of stars. But not as many as you'd think.Continue reading on Starts With A Bang! »
Astronomers have uncovered 31 of the oldest known quasars, including the two earliest ever detected, shining from a time when the universe was only about 670 million years old. Powered by supermassive black holes billions of times the Sun's mass, ...
The first one, NGC 1052-DF2, was mired in controversy. With four examples now, there only remains one possible escape. What does natureContinue reading on Starts With A Bang! »
Transient lunar phenomena, brief lights and glows on the Moon, have been reported for over 1,000 years.
Over 10 billion years in the past, an ultra-massive galaxy cluster lenses objects behind it. That has big implications for dark matter.Continue reading on Starts With A Bang! »
Astronomers have identified GJ 3378b, a super-Earth located 25 light-years away, in the habitable zone of its star, raising interest in its potential to support alien life.
While 3I/ATLAS is definitely a comet, its composition and age have remained unclear. Now, astronomers have solved these mysteries.