Pettit posted his striking footage on social media on Tuesday. The American astronaut used a wide-angle lens to get the ...

NASA's Perseverance rover has discovered a bizarrely textured rock covered in hundreds of egg-like spheres on Mars, ...

Geologists have long struggled to understand massive time gaps in Earth’s rock record, where millions—sometimes billions—of ...

New research is reshaping how scientists understand the earliest days of Earth’s formation—suggesting that the deep interior ...