Latest about gravity
What's the maximum number of planets that could orbit the sun?
If a super-advanced civilization had to ability to engineer the solar system from scratch, how many planets could they squeeze around the sun?
Could the moon ever be pushed from orbit, like in 'Moonfall'?
What would it take to dislodge the moon from its orbit and send it on a collision course with Earth?
Curvature of space-time measured using 'atomic fountain'
A group of physicists has measured gravity using the effects of time dilation — the slowing of time imparted by increased velocity or gravitational force — on atoms.
Giant black hole inside a tiny satellite galaxy defies explanation
A tiny galaxy orbiting at the outskirts of the Milky Way appears to have a giant black hole at its center, comparable to that of the much larger Milky Way itself, and scientists don't know why.
What is time dilation?
Time dilation refers to the fact that time passes at different rates for different observers, depending on certain variables.
Why do the planets in the solar system orbit on the same plane?
About 4.5 billion years ago, the solar system was just a giant, spinning cloud of gas and dust. Today, it's flat. Here's how that happened.
Traversable wormholes are possible under certain gravity conditions
Certain weird gravity conditions would make it possible to travel through a wormhole and back.
Why does gravity pull us down and not up?
Here's why the force of gravity pulls us down rather than up. The answer involves Einstein and the bendy realm of space-time.
