Measurements of this interstellar comet’s molecular makeup show an excess of heavy water molecules that is dramatically different from anything known to have ever formed around our sun ...

"The Solar Family" is an 11-minute educational film produced by Encyclopedia Britannica Films in 1936. It presents the evolution of the solar system through the lens of the planetesimal hypothesis, a ...

Meteorites preserve fragments of the earliest solid materials that formed around the young Sun. The Solar System began as a cloud of dust and gas called the solar nebula — the Sun formed at the centre ...