This voice experience is generated by AI. Learn more. This voice experience is generated by AI. Learn more. The Milky Way galaxy has more than 400 billion stars in it. Over the last few decades, ...

The arrival of an interstellar comet is a truly momentous astronomical event, but witnessing one up close, from the orbit of another planet? That is the stuff of science fiction. Yet, this remarkable ...

A small space telescope with the eyes of a giant will spend the next year studying the planets around distant stars, and the University of Arizona will serve as mission control. The refrigerator-sized ...