life on Earth
Ancient rocks hold proof of Earth’s magnetic field. Here’s why that’s puzzling
Science
A 3.7-billion-year-old record of our planet’s ancient magnetism has been unearthed, providing evidence that Earth’s magnetic field already existed very early in ...
Exploding stars are rare but emit torrents of radiation − if one happened close enough to Earth, it could threaten life on the planet
Science
Johannes Kepler observed the last supernova in the Milky Way in 1604, so in a statistical sense, the next one is overdue. ...
A dead Russian spacecraft almost collided with a NASA satellite. The crash could have sent 7,500 bits of debris rocketing around Earth.
Science
NASA’s TIMED satellite narrowly avoided colliding with a dead Russian spacecraft this week. In the worst-case scenario, the collision could have ejected ...
Earth’s water might have come from ancient space rocks, meteorite discovery suggests
Science
Earth and the rest of our solar system’s inner, rocky planets are the products of a myriad of tiny planetesimals — glorified ...
Comets that ‘bounce’ from planet to planet could spread life across the universe
Science
Scientists suspect that comets may have delivered the organic ingredients necessary to cook up life on Earth, and new research shows how ...
Gamma-ray burst in faraway galaxy disturbed Earth’s upper atmosphere
Science
By Will Dunham WASHINGTON (Reuters) – About two billion years ago in a galaxy far beyond our Milky Way, a big star ...
