The sun, our life-sustaining star, is a source of light, warmth, and energy. But what if it had a dark side? What if the sun, ...

"The glare from the sun makes it really, really difficult to see," said Michelle Nichols with Chicago's Adler Planetarium. Since Venus and Mercury are "inferior" planets compared with the Earth ...

Astronomers have discovered four planets that are just a fraction of the mass of Earth orbiting Barnard’s Star, which is 6 ...

We are certain that a part of the solar heat is due to falling meteors, but its amount is as nothing, compared ... of the age of the earth, considered independently of the sun, we find William ...

As the Northern Hemisphere welcomes spring today, the Southern Hemisphere is marked with the first day of autumn.

The findings reveal unusual chemical signatures and offer new insights into the behavior of novas beyond the Milky Way.

Earth formed over 4.5 billion years ago from a swirling cloud of gas and dust squished together by gravity. That same cloud gave rise to our entire solar system, including our star, the sun.

The triple star system is sending comets, asteroids and meteors our way, and the number of interstellar objects entering the solar system will rise.

Climate change is altering conditions in near-Earth space, which could limit the number of satellites that can reliably ...

New research suggests that powerful star explosions, called supernovae, may have caused at least two mass extinctions in ...

The sun was well observed during the period of the Maunder Minimum and this lack of sunspots is well documented. This period of solar inactivity corresponded to a climatic period called the ‘Little ...