Latest about gravity
'Emergent gravity' could force us to rewrite the laws of physics
The idea of emergent gravity is still new and requires a lot of assumptions in its calculations to make it work. But if experimental evidence ever proves it real, we would need to totally rewrite the laws of physics.
Every 2.4 million years, Mars tugs on Earth so hard it changes the ocean floor
A new geological study suggests that Mars' gravitational field pulls the Earth closer to the sun over cycles lasting millions of years, warming our climate.
Passing stars may have changed Earth's orbit and climate, study finds
Passing stars may have altered Earth's orbit, and its climate, many times throughout cosmic history. New research digs into what that means when it comes to understanding our planet's past.
Why don't we feel Earth spinning?
Earth moves around the sun at 67,000 mph and makes a full rotation once every 24 hours. So why can't we feel the Earth's rotation?
Einstein must be wrong: How general relativity fails to explain the universe
As new and powerful telescopes gather fresh data about the universe, they reveal the limits of older theories like Einstein's relativity.
Distorted crystals use 'pseudogravity' to bend light like black holes do
Researchers have used a special crystal to bend the trajectory of light like a black hole would, a phenomenon known as 'pseudogravity.'
Elusive Planet Nine could be an alternative form of gravity masquerading as a planet, study claims
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.
Potential discovery of a dozen objects beyond Pluto could reveal a new section of the solar system we never knew about
Astronomers may have detected a dozen large objects lurking beyond the Kuiper Belt at the edge of our solar system, suggesting there could be another equally massive, "second Kuiper Belt" hiding beyond the orbit of Pluto.
