"We would need to consider the possibility that the source was created (or trapped as a primordial black hole) by a highly advanced technological civilization," Harvard's Avi Loeb writes.

Find out what's up in your night sky during July 2025 and how to see it in this Space.com stargazing guide.

See what moon phase it is tonight and find out when you can see the rest of the moon phases for 2025.(Image credit: Credit: NASA/JPL-Caltech • whats_up_may_2025_moon_phases) Jump to: ...