Gravity
![An astronaut floating in space above the Earth with the moon in the background](https://cdn.mos.cms.futurecdn.net/EEBNQfRYewGndSbWFF2hZf-320-80.jpg)
Gravity is the fundamental force best known for keeping things grounded — literally! Live Science guides you through the history of gravity's discovery, keeps you in the loop about new weighty research and answers all your gravity-related questions.
Whether it’s weird theories of gravity, lost sketches revealing how Da Vinci understood gravity centuries before Einstein, how the tiniest ever gravitational force was measured, or what our universe would look like if gravity just didn't exist, our expert writers and editors keep you down to Earth with the latest gravity news, features and articles
Latest about Gravity
![A dark planet with a distant star](https://cdn.mos.cms.futurecdn.net/qpBQUaouTCWvayQbnqqfXN-320-80.jpg 320w, https://cdn.mos.cms.futurecdn.net/qpBQUaouTCWvayQbnqqfXN-450-80.jpg 450w, https://cdn.mos.cms.futurecdn.net/qpBQUaouTCWvayQbnqqfXN-500-80.jpg 500w, https://cdn.mos.cms.futurecdn.net/qpBQUaouTCWvayQbnqqfXN-650-80.jpg 650w, https://cdn.mos.cms.futurecdn.net/qpBQUaouTCWvayQbnqqfXN-840-80.jpg 840w, https://cdn.mos.cms.futurecdn.net/qpBQUaouTCWvayQbnqqfXN-970-80.jpg 970w, https://cdn.mos.cms.futurecdn.net/qpBQUaouTCWvayQbnqqfXN-1024-80.jpg 1024w, https://cdn.mos.cms.futurecdn.net/qpBQUaouTCWvayQbnqqfXN-1200-80.jpg 1200w)
Elusive Planet Nine could be an alternative form of gravity masquerading as a planet, study claims
By Harry Baker published
Astronomers suggest that an alternative concept of gravity, known as modified Newtonian dynamics, could explain orbital inconsistencies that have previously pointed to the existence of a ninth planet in the solar system.
![Antimatter illustration.](https://cdn.mos.cms.futurecdn.net/UQuD6EwrBSEZoCoanyAXiZ-320-80.jpg 320w, https://cdn.mos.cms.futurecdn.net/UQuD6EwrBSEZoCoanyAXiZ-450-80.jpg 450w, https://cdn.mos.cms.futurecdn.net/UQuD6EwrBSEZoCoanyAXiZ-500-80.jpg 500w, https://cdn.mos.cms.futurecdn.net/UQuD6EwrBSEZoCoanyAXiZ-650-80.jpg 650w, https://cdn.mos.cms.futurecdn.net/UQuD6EwrBSEZoCoanyAXiZ-840-80.jpg 840w, https://cdn.mos.cms.futurecdn.net/UQuD6EwrBSEZoCoanyAXiZ-970-80.jpg 970w, https://cdn.mos.cms.futurecdn.net/UQuD6EwrBSEZoCoanyAXiZ-1024-80.jpg 1024w, https://cdn.mos.cms.futurecdn.net/UQuD6EwrBSEZoCoanyAXiZ-1200-80.jpg 1200w)
Major CERN experiment proves antigravity doesn't exist — at least when it comes to antimatter
By Sharmila Kuthunur published
New research showing that elusive antimatter falls downward toward the Earth proves Albert Einstein right yet again.
![A bright, orange circle in the center of a ring of light. Four bright white spots form a cross shape on the circle's perimeter](https://cdn.mos.cms.futurecdn.net/uDL9CvzPvQHrDLnRCb5i5m-320-80.png 320w, https://cdn.mos.cms.futurecdn.net/uDL9CvzPvQHrDLnRCb5i5m-450-80.png 450w, https://cdn.mos.cms.futurecdn.net/uDL9CvzPvQHrDLnRCb5i5m-500-80.png 500w, https://cdn.mos.cms.futurecdn.net/uDL9CvzPvQHrDLnRCb5i5m-650-80.png 650w, https://cdn.mos.cms.futurecdn.net/uDL9CvzPvQHrDLnRCb5i5m-840-80.png 840w, https://cdn.mos.cms.futurecdn.net/uDL9CvzPvQHrDLnRCb5i5m-970-80.png 970w, https://cdn.mos.cms.futurecdn.net/uDL9CvzPvQHrDLnRCb5i5m-1024-80.png 1024w, https://cdn.mos.cms.futurecdn.net/uDL9CvzPvQHrDLnRCb5i5m-1200-80.png 1200w)
Rare 'Einstein cross' warps light from one of the universe's brightest objects in this stunning image
By Ben Turner published
Einstein predicted the existence of these crosses back in 1915. Now, they are used to study distant galaxies.
![A statue of Leonardo Da Vinci in the Uffizi Gallery in Florence, Italy.](https://cdn.mos.cms.futurecdn.net/PWhuk3af4piPcTsFXMzhxk-320-80.jpg 320w, https://cdn.mos.cms.futurecdn.net/PWhuk3af4piPcTsFXMzhxk-450-80.jpg 450w, https://cdn.mos.cms.futurecdn.net/PWhuk3af4piPcTsFXMzhxk-500-80.jpg 500w, https://cdn.mos.cms.futurecdn.net/PWhuk3af4piPcTsFXMzhxk-650-80.jpg 650w, https://cdn.mos.cms.futurecdn.net/PWhuk3af4piPcTsFXMzhxk-840-80.jpg 840w, https://cdn.mos.cms.futurecdn.net/PWhuk3af4piPcTsFXMzhxk-970-80.jpg 970w, https://cdn.mos.cms.futurecdn.net/PWhuk3af4piPcTsFXMzhxk-1024-80.jpg 1024w, https://cdn.mos.cms.futurecdn.net/PWhuk3af4piPcTsFXMzhxk-1200-80.jpg 1200w)
Da Vinci understood key aspect of gravity centuries before Einstein, lost sketches reveal
By Ben Turner published
Sketches found inside Leonardo da Vinci's sketchbooks, show that he had already grasped the essence of Einstein’s 1907 ‘Equivalence Principle’ centuries before the physicist.
![A radio telescope image of the 'invisible' galaxy from the early universe being gravitationally lensed by another object](https://cdn.mos.cms.futurecdn.net/ujBDddbLMYDVSG6EBqWM3i-320-80.jpg 320w, https://cdn.mos.cms.futurecdn.net/ujBDddbLMYDVSG6EBqWM3i-450-80.jpg 450w, https://cdn.mos.cms.futurecdn.net/ujBDddbLMYDVSG6EBqWM3i-500-80.jpg 500w, https://cdn.mos.cms.futurecdn.net/ujBDddbLMYDVSG6EBqWM3i-650-80.jpg 650w, https://cdn.mos.cms.futurecdn.net/ujBDddbLMYDVSG6EBqWM3i-840-80.jpg 840w, https://cdn.mos.cms.futurecdn.net/ujBDddbLMYDVSG6EBqWM3i-970-80.jpg 970w, https://cdn.mos.cms.futurecdn.net/ujBDddbLMYDVSG6EBqWM3i-1024-80.jpg 1024w, https://cdn.mos.cms.futurecdn.net/ujBDddbLMYDVSG6EBqWM3i-1200-80.jpg 1200w)
Scientists reveal 'invisible' galaxy from the early universe, using space-time trick predicted by Einstein
By JoAnna Wendel published
Using the ALMA telescope in Chile and Einstein's theory of relativity, scientists observed a young galaxy in the early universe that is invisible in nearly every wavelength.
![An illustration showing neutron stars merging into a black hole, as electromagnetic waves ripple outward](https://cdn.mos.cms.futurecdn.net/vr7weCx49mN4AgRzFSDdn8-320-80.jpg 320w, https://cdn.mos.cms.futurecdn.net/vr7weCx49mN4AgRzFSDdn8-450-80.jpg 450w, https://cdn.mos.cms.futurecdn.net/vr7weCx49mN4AgRzFSDdn8-500-80.jpg 500w, https://cdn.mos.cms.futurecdn.net/vr7weCx49mN4AgRzFSDdn8-650-80.jpg 650w, https://cdn.mos.cms.futurecdn.net/vr7weCx49mN4AgRzFSDdn8-840-80.jpg 840w, https://cdn.mos.cms.futurecdn.net/vr7weCx49mN4AgRzFSDdn8-970-80.jpg 970w, https://cdn.mos.cms.futurecdn.net/vr7weCx49mN4AgRzFSDdn8-1024-80.jpg 1024w, https://cdn.mos.cms.futurecdn.net/vr7weCx49mN4AgRzFSDdn8-1200-80.jpg 1200w)
Physicists want to use gravitational waves to 'see' the beginning of time
By Andrey Feldman published
Gravitational waves are ripples in the fabric of space. Waves that originated in the early universe could carry important information about the phenomena that occurred there.
![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 320w, https://cdn.mos.cms.futurecdn.net/MasLwKqNAKxkhDabw82cub-450-80.jpg 450w, https://cdn.mos.cms.futurecdn.net/MasLwKqNAKxkhDabw82cub-500-80.jpg 500w, https://cdn.mos.cms.futurecdn.net/MasLwKqNAKxkhDabw82cub-650-80.jpg 650w, https://cdn.mos.cms.futurecdn.net/MasLwKqNAKxkhDabw82cub-840-80.jpg 840w, https://cdn.mos.cms.futurecdn.net/MasLwKqNAKxkhDabw82cub-970-80.jpg 970w, https://cdn.mos.cms.futurecdn.net/MasLwKqNAKxkhDabw82cub-1024-80.jpg 1024w, https://cdn.mos.cms.futurecdn.net/MasLwKqNAKxkhDabw82cub-1200-80.jpg 1200w)
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 2-foot vacuum chamber will use magnets to recreate lunar gravity here on Earth.](https://cdn.mos.cms.futurecdn.net/9LvowYzAyEQFchqytgVAtk-320-80.jpg 320w, https://cdn.mos.cms.futurecdn.net/9LvowYzAyEQFchqytgVAtk-450-80.jpg 450w, https://cdn.mos.cms.futurecdn.net/9LvowYzAyEQFchqytgVAtk-500-80.jpg 500w, https://cdn.mos.cms.futurecdn.net/9LvowYzAyEQFchqytgVAtk-650-80.jpg 650w, https://cdn.mos.cms.futurecdn.net/9LvowYzAyEQFchqytgVAtk-840-80.jpg 840w, https://cdn.mos.cms.futurecdn.net/9LvowYzAyEQFchqytgVAtk-970-80.jpg 970w, https://cdn.mos.cms.futurecdn.net/9LvowYzAyEQFchqytgVAtk-1024-80.jpg 1024w, https://cdn.mos.cms.futurecdn.net/9LvowYzAyEQFchqytgVAtk-1200-80.jpg 1200w)
China builds 'artificial moon' for gravity experiment
By Ben Turner published
The test chamber will enable scientists to test technologies and structures on Earth before sending them to the moon.
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