When a hunk of ice from another star system hurtles through our cosmic neighborhood, astronomers pay attention. When that same hunk of ice starts blasting out enough water to fill 70 Olympic swimming ...
With all the things going on here on Earth, but also in the immediate space that surrounds it, humanity seems to have forgotten all about a comet that sparked intense controversy not long ago. But now ...
If ancient alien explorers ever traipsed through Earth's cosmic neighborhood, could it be possible they left behind some interstellar litter on the moon?