SpaceX just flew a rocket to space for the second time. It was a fairly normal launch, but this accomplishment opens up a whole new era in space flight. What are SpaceX's plans, and who else is working on reusable rockets?

French astronomers discover the brightest auroras on Uranus ever seen, and they look ... weird.

Since the constellations are based on their appearance from Earth, the Sun does not belong to any. But if you could go to another star system, it would certainly look that way!

During the month of April, 2017, Jupiter will make its closest approach to Earth, allowing for some prime viewing opportunities for the Hubble Space Telescope.

Ongoing observation of exoplanet GJ 1132b has revealed a dense atmosphere, a finding which has great significance in the hunt for life beyond Earth.

Every two years, Earth and Mars reach the closest points to each other in their orbit, which is referred to as a "Mars opposition".

This year's Yuri's Night promises to be a momentous occasion, with celebrations and events taking place all over the world!

In the course of observing an explosion in a distant galaxy, a team of researchers noticed something unprecedented - a supernova in slow-motion.

Been missing the evening planets? Currently, Saturn and Venus rule the dawn, and Mars is sinking into the dusk as it recedes towards the farside of the Sun. That's been changing for one planet, however, as Jupiter reaches opposition this week.

With the successful launch of a reused Falcon 9, Musk has revealed additional details about the maiden launch of the Falcon Heavy, which is scheduled for this summer.

PORT CANAVERAL/KENNEDY SPACE CENTER, FL - Basking in the sunrise glow, the world's first recycled booster - namely a SpaceX Falcon 9 - sailed serenely into Port Canaveral this morning, Tuesday, April 4, atop the tiny droneship on which it soft landed shortly after launching on March 30 for an unprecedented second time.

The TRAPPIST-1 star might flare too frequently and too violently for life to exist on the TRAPPIST planets.