The light from the sun heats up the Earth, and the Earth emits some of that heat back. (In fact, ... And without an atmosphere, Earth would have this problem too.

Light from the sun, which is 93 million miles (about 150 million kilometers) from Earth, takes just over eight minutes to reach us. In other words, the sunlight you see is eight minutes old.

For a dying star to have any effect on life on our planet, it would have to go supernova within 100 light years from Earth. I’m an astronomer who studies cosmology and black holes .

Without this heat on Earth, humans could not survive. Join in at 2pm on Friday 23rd November for the Doctor Who, Space, Light and Super Movers Live Lesson where we’ll investigate this problem ...

One broken piece of quartz in a physics lab could shed light on the history of life on Earth and the search for other habitable worlds. Today, most life as we know it depends on oxygen ...

Earth may have had a ring made up of a broken asteroid over 400 million years ago, a study finds. The Saturn-like feature could explain a climate shift at the time.

If a traveler could reach 99 percent the speed of light by accelerating at 32.2 ft/s2 (9.8 m/s2), they would experience the trip from Earth to the center of the Milky Way in about 20 years.