Discover interesting facts about the sun, the solar system's central star that supports all life on Earth.

An atom consists of a heavy center, called the nucleus, made of particles called protons and neutrons. An atom has lighter particles called electrons that you can think of as orbiting around the ...

Discover what will happen when the sun dies, from its red giant phase to its final transformation — plus why we don’t need to worry for billions of years.

This hydrogen-burning helium forging phase is what astrophysicists call the main sequence lifetime of a star. But, helium isn't the only chemical element being forged in the sun. When and where do ...

Moving from the outer layer inward, the first layer is the corona — the outermost part of the sun’s atmosphere that is ...

Sun is the source of life on Earth, but have you ever wondered what’s really happening inside this giant ball of gas? Despite being millions of miles away, scientists have developed methods to peer ...

Nuclear fusion requires temperatures of over 27 million degrees F for hydrogen ions to fuse and form a helium ion. ... To put that into perspective, the surface of the sun is 9,941 degrees F.

Around our Sun, the habitable zone ... In addition to blocking out any starlight, the hydrogen-helium atmosphere that made life possible on such a world would be 10,000 times heavier than Earths.