Prior to 2040, the last planetary quintuplet occurred in the year 1186, and according to Uptain, records show that the close ...

Barnard’s Star is notorious among astronomers for a history of false planet detections but it appears the latest discovery – ...

Asteroids’ orbits around the sun may put them in collision paths with inner planets. We may have had a near-miss, but ...

A NASA mission, IMAP, will investigate and map the sun's particles and energy across the entire heliosphere, using a ...

More than 60 years after the first debunked discovery of a planet orbiting Barnard’s Star, the closest single-star system to ...

Out past Neptune are countless small icy and rocky bodies called Trans-Neptunian Objects (TNOs), and many of these have moons ...

The main "first" of this mission was that they were the first people to orbit around the planet's poles. No other human has ...

Elon Musk’s Mars ambitions face political, technical, and timing hurdles, impacting NASA’s Moon plans and America’s space ...

The shape of a planet's orbit is one of its fundamental properties, along with its size and distance from its host star. Earth has a nearly circular orbit, but some planets outside our solar ...

We often focus on space observatories that peer beyond Earth. But the vast majority of satellites stare right back at us.

What's happening in the skies over North Texas this month? April holds some spectacular sights in the night sky. Check out ...