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Passing stars may have changed Earth's orbit and climate, study findsPassing 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.
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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?
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Einstein must be wrong: How general relativity fails to explain the universeAs new and powerful telescopes gather fresh data about the universe, they reveal the limits of older theories like Einstein's relativity.
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Why are things in space round?Why are most planets and moons (mostly) spherical?
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Distorted crystals use 'pseudogravity' to bend light like black holes doResearchers have used a special crystal to bend the trajectory of light like a black hole would, a phenomenon known as 'pseudogravity.'
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Elusive Planet Nine could be an alternative form of gravity masquerading as a planet, study claimsAstronomers 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.
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Potential discovery of a dozen objects beyond Pluto could reveal a new section of the solar system we never knew aboutAstronomers 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.
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Major CERN experiment proves antigravity doesn't exist — at least when it comes to antimatterNew research showing that elusive antimatter falls downward toward the Earth proves Albert Einstein right yet again.
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Stunningly perfect 'Einstein ring' snapped by James Webb telescope is most distant gravitationally lensed object ever seenThe James Webb Space Telescope has snapped a stunning image of a perfectly formed Einstein ring, which is also the most distant gravitationally lensed object ever detected.
