In the Northern Hemisphere, Earth’s axis of rotation, referred to as the “North Celestial Pole,” currently points to a spot ...

The Sun crosses the Celestial Equator this week, but what exactly does that mean?

Discovered in 1930 at the Lowell Observatory, Pluto was demoted as a planet in 2006. Some want President Trump to take action ...

Earth may feel stable beneath our feet, but our planet is actually racing through space at extraordinary speeds. In this ...

Greek mythology has given a name to a great many objects in our solar system. But perhaps one of the least well understood ...

NASA’s twin ESCAPADE spacecraft will uncover how the Sun stripped Mars of its atmosphere. Mars is a very different world ...

Debate has raged for two decades over whether Pluto should be considered a planet. Some want President Trump to take action via executive order.

A Greek student astronomer has identified compelling evidence of a dramatic planetary collision unfolding around a distant ...

It's far from clear if the weather is planning to cooperate, but spring arrives — technically, at least — Friday. The vernal equinox arrives on Friday, ...

For decades, astronomers have struggled to differentiate giant planets from brown dwarfs, a class of objects more massive ...

Winter constellations shine defiantly in the face of spring as galaxy season and zodiacal light beckon. When you purchase ...