Astronomers have discovered four planets that are just a fraction of the mass of Earth orbiting Barnard’s Star, which is 6 ...

NASA is monitoring an asteroid approximately the size of an airplane as it prepares to pass by the Earth on March 21. The ...

They flattened forests, left massive craters and even killed the dinosaurs. Learn all about Earth’s hugest asteroid strikes.

In our news wrap Tuesday, two American astronauts stuck in space since last year are finally back on Earth, Senate Minority ...

The solar system moved through a star-forming area near Orion. This event might have increased interstellar dust around Earth ...

Skywatchers snapped photos of the "blood moon" hovering above North and South America last night. Here's a gallery of images ...