Images of Earth and the moon captured by the Tianwen 2 robotic probe are released on Tuesday by the China National Space ...

"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.

In an extraordinary celestial coincidence, two "new stars" —scientifically known as novae —are currently visible to the naked ...