The sun is a giant nuclear fusion reactor. The sun is so incomprehensibly big that it's almost pointless to bother trying to imagine its size. Our star is about 860,000 miles across.

Scientists believe the Milky Way contains up to 400 billion stars and at least as many planets. The largest galaxy known, IC 1101, has more than 100 trillion stars. Step outside on a clear night and ...

Once they escape the Sun, they zoom through space at the speed of light, eventually reaching Earth and giving us that sweet, ...

U.S. President Donald Trump is hosting five West African leaders at a “multilateral lunch” as their region reels from the ...

Florence at night takes on a magical air, with a jewel box of architectural and cultural treasures just waiting to be ...

The sun's rays are typically strongest between 10 a.m. and 4 p.m. These dangerous hours are determined by how high the sun is in the sky and can vary based on where you are.

Even if Earth does survive, it won’t be pretty. The temperature of our planet will be about 1,300 degrees C, hot enough to ...

ST. PAUL, Minn. (AP) — The man charged with killing former Minnesota House Speaker Melissa Hortman and her husband, and ...

If every district court judge in the United States had the power to halt an action of the elected government for years every ...

For some of the people reading this, America has never been better. For some of the people reading this, this nation’s future ...