Because the Moon is over a quarter the diameter of Earth, the Earth-Moon system is often cited as the pairing in our Solar ...

Five of the brightest planets will be visible to the naked eye. With help, you may even spot Uranus and Neptune.

A new volcanic hotspot on Jupiter’s moon Io has been detected, releasing six times Earth’s total energy output.

NASA officials said what Juno spotted was 'the most powerful volcanic event ever recorded on the most volcanic world in our ...