A Rare Near-Earth Comet Just Buzzed Earth, Possibly Raining Down Fireballs

Massive Solar Eruption Blasts NASA Probe Head-On Before Impacting Earth

Young Sun-like star reveals hidden step in how planets like Earth get their water. The new results show that a significant portion of Earth's water most likely formed billions of years ago, before the Sun had even ignited.

Risk of Giant Asteroids Hitting Earth Could Be Worse Than We Realized