Our solar system resides in a galaxy called the Milky Way, stuffed with between 100 billion and 400 billion other stars, many of them with planets of their own. The Milky Way got its name from the ...

However, it is now considered a dwarf planet instead. The universe has billions of galaxies, and our solar system is in the Milky Way Galaxy. The Milky Way contains at least 100 billion other ...

The brightest star in the nighttime sky, Sirius, or the Dog Star ... Ancient white dwarf stars shine in the Milky Way galaxy. Stars like our sun fuse hydrogen in their cores into helium.

Astronomers have spotted the shiniest known planet in the Milky Way, and it has metal clouds ... only bounces back 30% of its sunlight. Venus, the solar system's shiniest planet, reflects 75% ...

This week’s first small-telescope target is Sirius B, the companion to the night sky’s brightest star, Alpha (α) Canis Majoris. American telescope-maker Alvin Graham Clark discovered that ...