Planet 124 light-years from Earth could be ‘teeming with alien life’ - Researchers say exoplanet K2-18b offers the strongest signs yet of alien life in groundbreaking study ...

The discovery of the exoplanet, a super-Earth called Kepler-735c, is all down to something called transit timing variations, ...

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.

Or Earth might come out the other way if it is a grazing encounter, but probably without its atmosphere," he said. Our galaxy may be teeming with rogue planets, gravitationally unbound to any star.

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 .

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 ...

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.

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.