In the vast expanse of space, a dead satellite named Relay 2 made a surprising comeback. Astronomers in Australia detected a powerful radio signal in mid-June that initially sparked excitement. They thought they had stumbled upon an unknown object near Earth. However, the source of the signal turned out to be much closer than expected. Relay 2, launched by NASA in 1...

Scientists are on the hunt for alien life, but it's not as simple as waiting for a visitor. They have to sift through mountains of data, looking for unusual radio signals. The idea is that if aliens exist, they might send out powerful radio waves, which can travel vast distances. This is the basis for the search for extraterrestrial intelligence (SETI). The ...