Astronomy and commercial space are often portrayed as being on a collision course, yet their futures are deeply intertwined. As satellite constellations expand, astronomers raise concerns about trails ...

As the year gets underway, something important happens quietly in space while life on Earth carries on as usual. Our planet reaches the point in its yearly path where it moves closest to the sun.

They can't do the same with Earth because tectonics and constant crustal recycling have erased the meteorite bombardment record. But the Moon is stable with no atmosphere, and therefore no weather. So ...

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