The pieces of a meteorite that fell in Costa Rica in 2019 are so unusual that scientists believe it had moved through space relatively unscathed — that is, until it encountered our planet. This is in ...

Analysis of organic compounds -- called polycyclic aromatic hydrocarbons (PAHs) -- extracted from the Ryugu asteroid and Murchison meteorite has found that certain PAHs likely formed in the cold areas ...

In April 2019, a fiery streak lit up the sky over northern Costa Rica. It wasn’t lightning or fireworks. It was a rock from space, plunging into Earth’s atmosphere at over 14 kilometers per second.

Amino acids have been found in interstellar clouds and in meteorites – but with some enigmatic omissions and tantalizing similarities to life on Earth. Just why some amino acids are present in ...

In July 1969, the crew of the Apollo 11 brought back nearly 48 pounds (22 kilograms) of pristine lunar rocks from the most incredible — and expensive — rock-collecting expedition in history. NASA had ...