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We measure the extremely long distances between things in space by light years. A light year is the distance that light travels in one Earth year. Light travels at about 300,000 kilometres per second.
Observations from NASA’s Juno spacecraft reveal that Jupiter’s strong magnetic field and the unique properties of its plasma ...
Just the third-ever confirmed interstellar object has been detected in our solar system. Here's what we know. (Spoiler: It's ...