gravity
Latest about gravity
![An artist's impression of Mars' moons Phobos (left) and Deimos (right) orbiting the Red Planet.](https://cdn.mos.cms.futurecdn.net/nWAycncKhc2KNEfdeoXFzb-320-80.jpg)
Mars may be slowly ripping its largest moon apart
By Harry Baker published
A new study has revealed that the weird parallel grooves on the surface of Mars' largest moon Phobos could be a sign that the Red Planet's gravity is ripping the satellite apart.
![NASA’s James Webb Space Telescope has produced the deepest and sharpest infrared image of the distant universe to date. Known as Webb’s First Deep Field, this image of galaxy cluster SMACS 0723 is overflowing with detail.](https://cdn.mos.cms.futurecdn.net/MasLwKqNAKxkhDabw82cub-320-80.jpg)
Something is wrong with Einstein's theory of gravity
By Kazuya Koyama, Levon Pogosian published
Albert Einstein’s theory of general relativity has been remarkably successful in describing the gravity of stars and planets, but it doesn’t seem to apply perfectly on all scales.
![The universe may be vast, but researchers have multiple points of evidence that reveal its shape.](https://cdn.mos.cms.futurecdn.net/MJKiLWfYnb6nh9uXC8D6ra-320-80.jpeg)
What is the shape of the universe?
By Elizabeth Rayne published
The universe may be vast, but researchers have multiple points of evidence that reveal its shape.
![A near-perfect Einstein ring from the galaxy JO418.](https://cdn.mos.cms.futurecdn.net/DaATrgRhT8HyQqfpEJnHPT-320-80.jpg)
Stunningly perfect 'Einstein ring' captured by James Webb Space Telescope
By Harry Baker last updated
A new image using data collected by NASA's James Webb Space Telescope shows off one of the most perfect "Einstein rings" ever captured.
![This is an image of the Earth at night seen from space (city lights can be seen). You can only see the Northern hemisphere, with North America on the left, and Europe on the right. In the middle of the far distance you can see the sun as a solar flare, lighting up the other side of the Earth.](https://cdn.mos.cms.futurecdn.net/q4ajDUnffbMhw6P8v87Aug-320-80.jpg)
Is Earth getting closer to the sun, or farther away?
By Charles Q. Choi last updated
Here's a look at whether Earth is getting closer to or farther from the sun, why that's happening and what effects it might have on our planet.
![Male astronaut floating upside down in a tucked position in a space station. He has short blond hair and is wearing a gray jumpsuit.](https://cdn.mos.cms.futurecdn.net/piLtbhXUivGyPwuNv5PsUe-320-80.jpg)
How can you experience weightlessness?
By Joe Phelan published
How one earth (or space) can a person experience microgravity?
![Artistic impression of the Double Pulsar system, where two active pulsars orbit each other in just 147 minutes.](https://cdn.mos.cms.futurecdn.net/mZCMeDfXfZndHUFJrqm8vA-320-80.jpg)
Einstein's theory of general relativity passes one of its toughest tests yet
By Mike Wall last updated
Scientists tested seven different predictions, in one of the most ambitious and involved challenges to general relativity ever undertaken — and the theory passed with flying colors.
![Albert Einstein's E=mc2](https://cdn.mos.cms.futurecdn.net/dZN6pG3DkKVzHvuTsG4MjX-320-80.jpg)
9 equations that changed the world
By Adam Mann last updated
Here are nine equations that altered the course of history.
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