General Relativity
Alcubierre Gives us an Update on his Ideas About Warp Drives
A new look at warp drive fuels hope that it might be possible after all.
If We Used the Sun as a Gravitational Lens Telescope, This is What a Planet at Proxima Centauri Would Look Like
A recent study shows how the Sun could be used as a gravitational lens to take direct images of nearby…
Black Holes Gain new Powers When They Spin Fast Enough
Fast spinning black holes could have features different from those predicted by general relativity.
We actually don’t know how fast the Milky Way’s supermassive black hole is spinning but there might be a way to find out
The stars at the center of our galaxy could tell us just how fast our closest supermassive black hole is…
Black Holes Make Complex Gravitational-Wave Chirps as They Merge
When black holes collide, they emit chirps of gravitational waves even after they have merged.
Gravitational-Wave Lensing is Possible, but it’s Going to be Incredibly Difficult to Detect
Because gravitational waves travel at the speed of light, they can be lensed just as light waves are. But observing…
Einstein. Right again
Astronomers can now test the limit of relativity and whether new physics lies beyond Einstein's model.
The Shadow from M87’s Supermassive Black Hole has Been Observed Wobbling Around the Galaxy for Years
Over the past decade, the shadow of a black hole in M87 has been wobbling, which tells us about how…
One Theory Beyond the Standard Model Could Allow Wormholes that You Could Actually Fly Through
A new study by a team of theoretical astrophysicists shows that stable wormholes could exist, but don't expect them to…
Fastest Star Ever Seen is Moving at 8% the Speed of Light
A star orbiting the black hole in the center of our galaxy is moving so fast it can only be…