The object dubbed Earth's "second moon" is actually a quasi-satellite that's accompanied the planet since 1957 — not a true ...
By mapping areas where seismometers in southern California detected sonic booms, researchers at Johns Hopkins University and ...
Our planet has experienced dramatic climate shifts throughout its history, oscillating between freezing "icehouse" periods ...
It was quite a leap. Conspiracy theorists are being brought back down to Earth after NASA scientists debunked a wild claim ...
A pull in the right direction ...
Carbon released from Earth's spreading tectonic plates, not volcanoes, may have triggered major transitions between ancient ...
For anyone curious about what it's like to stand on another planet, Earth offers a few convincing previews. Mars may be 140 ...