A vast, flat sheet of dark matter may solve the long-standing mystery of why our neighboring galaxy Andromeda is speeding ...

The expansion of the Universe, discovered nearly a century ago by Edwin Hubble, shows that galaxies are moving away from us faster the more distant they are. Yet, our nearest neighbor, the ...

An international team of astronomers reports the discovery of a new dwarf galaxy, which they have named Pegasus VII. The newfound galaxy, which lies about 2.4 million light years away, was identified ...

A sheet of dark matter lying beyond the boundary of the Local Group is responsible for this.

A flat plane of dark matter beyond the Local Group may explain why nearby galaxies move away from us instead of falling inward.

Using the Hubble Space Telescope, astronomers have discovered what seems to be a galaxy that is the most heavily dominated by ...

Astronomers tracked a star in Andromeda as it dimmed and vanished without the usual fiery explosion, offering rare clues to ...

In A Nutshell A massive star in the Andromeda Galaxy faded by more than 10,000 times over a decade and vanished from view, ...

For nearly a century, astronomers have known that the universe is expanding. Most galaxies are carried outward with the flow ...

Andromeda is also a flattened spiral like the Milky Way, but it's twice as large — 220,000 light-years across versus 105,000 for the Milky Way — and crammed with a trillion suns. Can you even begin to ...

This voice experience is generated by AI. Learn more. This voice experience is generated by AI. Learn more. The Samsung Galaxy S26 Ultra is coming. As the days pass, the consensus has been building ...