We have mapped and discovered a large portion of the most dangerous asteroids in the Solar System, but there is a glaring ...

Space scientists look back on three decades of exoplanet discoveries—from rows of massive ‘super-Earths‘ to worlds with ...

Mercury will be farthest from the sun on Tuesday (Aug. 19), granting early risers a perfect opportunity to spot the fleet-footed world somewhat separated from the glare of our parent star. Mercury ...

Planets that orbit white dwarf stars should be too hot to host alien life, theories suggest. But a new study accounting for ...

Image specialist Andy Saunders on mining NASA's archives for the ultimate record of America's early space programs ...

The simulation of the Solar System that came the closest to the observation was the presence of a small planet, between the ...

The month is packed with skywatching highlights—including two galaxies visible to the naked eye and a rare glimpse of the ...

The planet has not been detected but merely inferred by the tilted orbits of some distant objects in the Kuiper Belt — a ...

Jaw-dropping scenes show a "train" of Elon Musk's Starlink satellites in orbit - along with an impressive aurora. NASA ...

Astronomers are investigating a potential hidden planet, dubbed Planet Y, far beyond Neptune. Its gravitational pull is ...