If you get away from city lights and witness the astonishing beauty of the night sky, most of the stars you can see are part of what is known as the “main sequence”. The few that aren’t part of it get ...

The galaxy's cream-colored center is packed with ancient stars, and the ... H II (pronounced "H-two" or hydrogen-two) regions ...

01 times that of our own sun, but their mass is about the same. Stars like our sun fuse hydrogen in their cores into helium. White dwarfs are stars that have burned up all of the hydrogen they ...