The story began about 4.6 billion years ago, when a monstrously giant cloud of dust and gas collapsed under its own gravity. Sun took the center stage and soon enough Earth and its neighborhood ...
Comet 3I/ATLAS, the third known interstellar object ever detected passing through our solar system, carries a chemical signature that does not match what astronomers typically see in comets born ...
Microscopic crystals extracted from meteorites could help settle a debate about the birth of our patch of the Milky Way.