Geologists have discovered the earliest evidence of a meteor collision with Earth: tiny fragments of melted rock that showered down on our planet 3.48...
NASA warns of 3 skyscraper-sized asteroids headed toward Earth this week. Thankfully, they'll all miss.
An artist's impression of a near-Earth asteroid. (Image credit: Science Photo...
How a weird theory of gravity could break cause-and-effect
By Paul Sutter - Astrophysicist about 18 hours ago
Could modified theories of gravity explain bizarre behavior...