New posts in Planets

Would there be any gravity inside a hollow planet made of a spherical shell of basalt crust?

Why doesn't planet Earth expand if I accelerate upwards when standing on its surface?

Why no gravity lens around planets?

What's the actual path of the planets?

Is there a maximum distance from a planet that a moon can orbit?

If the mass of the Earth is decreasing by sending debris in space, does its angular momentum also decrease?

Does a star need to be inside a galaxy?

If gravity disappeared, would Newton's third law make everything that was pressed to the ground by gravity get pushed upwards?

Why do all the planets and stars in our solar system have such similar average densities?

Why does the Earth even have a magnetic field?