
In 2017, a huge rocky formation was spotted moving through space, defying science's understanding of natural motion. Researchers called the rock 'Oumuamua. Two years later, a similar formation was found. Could the rocks have been made by intelligent life? And is this the first...

In 2017, a huge rocky formation was spotted moving through space, defying science's understanding of natural motion. Researchers called the rock 'Oumuamua. Two years later, a similar formation was found. Could the rocks have been made by intelligent life? And is this the first...