The $488 million Spherex mission aims to explain how galaxies formed and evolved over billions of years, and how the universe ...

Our Sun was formed around 4.6 billion years ago from a giant cloud called a stellar nebula, mainly made up of hydrogen gas and dust. The nebula collapsed under its own gravity and, as it did ...

Seven planets will line up for a rare "planetary parade" today (Feb. 28) and you can watch it live online, beginning at 12:00 p.m. ET (1700 GMT).

The Earth formed over 4.6 billion years ago out of a mixture of dust and gas around the young sun. It grew larger thanks to countless collisions between dust particles, asteroids, and other growing ...

The puzzle of predicting how three gravitationally bound bodies move in space has challenged mathematicians for centuries, and has most recently been popularized in the novel and television show '3 ...

Water is essential for life, but when did it first appear in the universe? A new study suggests that water may have formed ...