Scientists have known for many years that asteroids often follow planets, moving in the same orbit around the sun. These so-called "Trojan asteroids" have been spotted tagging alongside Jupiter, Mars, and Neptune.
Earth, however, was believed to be free of these celestial stalkers — until now. Astronomers from Athabasca University in Canada, using data from an infrared NASA telescope that's orbiting the Earth, discovered an asteroid tracking us from just 50 million miles away.
Kate Adamala had been working on something dangerous.
At her synthetic biology lab, Adamala had been taking...
Strange animals that get their energy from chemical reactions instead of the sun have been discovered.../https://tf-cmsv2-smithsonianmag-media.s3.amazonaws.com/filer_public/28/42/284283dd-663b-4e1a-a610-c2b440c84f65/ezgif-34f9a279a9f974.jpg)
Early humans who made some of the oldest known stone tools might have traveled miles to...
