ALMA picks up signals from big dust grains, about the size of sand grains, showing that they are concentrated in a thin, ...

NASA is now considering March 19 as the new return date for astronauts Sunita Williams and Barry Wilmore, moving up their ...

It's certain that recently discovered asteroid 2024 YR4 will swing close to Earth in 2032. The chances of an impact remain low — but with relatively limited observations so far, the odds are in flux.

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Spotting one or two of the planets in our solar system is well worth a good skywatch, but seeing (almost) all of them in a ...