gravity
Latest about gravity
![Two rivers of hot gas are siphoned onto the surface of a neutron star (the collapsed remains of a dead star) in this illustration.](https://cdn.mos.cms.futurecdn.net/mgyyLTtjQGP3b8WBvbWPU-320-80.jpg)
Dead stars sometimes shine again — and gravity itself may be responsible
By Paul Sutter published
Do dead stars glow? A strange gravitational phenomenon could be generating enormous amounts of light around neutron stars, new research suggests.
![An artist's rendering of a black hole](https://cdn.mos.cms.futurecdn.net/DDvy89CzEH3pLHBqNyBJyR-320-80.jpg)
What would happen if a black hole wandered into our solar system?
By Ashley Hamer published
Black holes aren't "cosmic vacuum cleaners," but what would happen if one wandered into our solar system?
![A pair of arrow-shape ripples in clouds as viewed from space](https://cdn.mos.cms.futurecdn.net/6QkQ7zshxCryZVGd35nxQg-320-80.jpg)
Earth from space: Gravity waves spark pair of perfect cloud ripples above uninhabited islands
By Harry Baker published
This 2023 astronaut photo shows a pair of perfectly aligned "wave clouds" rippling above the Crozet Islands in the Southern Ocean. The unusual patterns are the result of changes in temperature caused by gravity waves.
![An artist's interpretation of a black hole surrounded by stars](https://cdn.mos.cms.futurecdn.net/UYBAeZE6L4XpK6kUhsgQr7-320-80.jpg)
Milky Way's rarest black hole may lurk behind 7 stars that 'shouldn't be there'
By Harry Baker published
Seven strangely-behaving stars in the Milky Way's Omega Centauri cluster may be under the influence of an extremely rare type of black hole, new research suggests.
![An artist's rendering of a black hole](https://cdn.mos.cms.futurecdn.net/BF9s5fJ3Y9CcCURuVkGcM5-320-80.jpg)
Study finds black holes made from light are impossible — challenging Einstein's theory of relativity
By Andrey Feldman published
New theoretical research finds that it's impossible to form a black hole with the energy of light particles alone, poking a hole in Einstein's theory of general relativity.
![an illustration showing the hypothetical Planet 9 with blue rings and a question mark over it, with stars and a galaxy in the background](https://cdn.mos.cms.futurecdn.net/c8aDkvbNawx6CMY2xmyzT7-320-80.jpg)
Planet Nine: Is the search for this elusive world nearly over?
By Harry Baker published
Astronomers have been scouring the outer solar system for signs of a hypothetical ninth planet for almost a decade, without success. However, we may finally be on the cusp of finding it, experts say.
![An artist's rendering of Kepler 16-b and its two suns](https://cdn.mos.cms.futurecdn.net/MXXLTg8qUfQu3KEjEcMssG-320-80.jpg)
What is the 3-body problem, and is it really unsolvable?
By Skyler Ware published
The three-body problem is a physics conundrum that has boggled scientists since Isaac Newton's day. But what is it, why is it so hard to solve and is the sci-fi series of the same name really possible?
![The nearby Andromeda galaxy with older stars highlighted in blue. A new theory of quantum gravity could help explain why more distant galaxies seem to be retreating faster than nearer ones.](https://cdn.mos.cms.futurecdn.net/2mam5h3ey9Jeap2433wAvh-320-80.jpg)
A new theory of quantum gravity could explain the biggest puzzle in cosmology, study suggests
By Andrey Feldman published
A new theory of quantum gravity, which attempts to unite quantum physics with Einstein's relativity, could help solve the puzzle of the universe's expansion, a theoretical paper suggests.
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