If too close to an environment harboring complex life, a gamma ray burst could spell doom for that life. But…
Some of science's most pressing questions involve the origins of life on Earth. How did the first lifeforms emerge from…
NASA has taken on space missions that have taken years to reach their destination; they have more than a dozen…
About sixty five and a half million years ago, the Earth suffered its largest known cosmic impact. An asteroid or…
Early in Earth's history, a killer asteroid smashed a hole in our planet about 300 miles (500 kilometers) wide, which…
When it comes to life on Earth, we're not sure if it came from the outside (transported by comets) or…
There's an excellent chance of frost in this corner of the universe: astronomers have spotted a "snow line" in a…
The recent meteor explosion over Chelyabinsk brought to the forefront a topic that has worried astronomers for years, namely that an impactor…
When the Moon was receiving its highest number of impacts, so was Earth. Credit: Dan Durda Some questions about our…
Lake Vida lies within one of Antarctica's cold, arid McMurdo Dry Valleys (Photo: Desert Research Institute) Even inside an almost…