The morning of April 24 will give rise to a striking mini-planetary parade, as Mercury, Venus, Saturn, Neptune, and Earth's moon cluster together in the same region of the pre-dawn sky, making for a ...

It’s International Dark Sky Week, a worldwide celebration that was started in 2003 to raise awareness about light pollution.

April 22 is traditionally known as Earth Day, the occasion where we pause as temporary travelers on our 'blue marble' to ...

When a planet's orbit brings it between Earth and a distant star, it's more than just a cosmic game of hide and seek. It's an ...