Interstellar comet 3I/ATLAS arrived in the Solar System as a fragment of deep time, a frozen shard that formed long before Earth existed and is now briefly sharing our neighborhood. Its passage has ...

Mankind must decide how it’s going to deal with contact with extraterrestrials — and time could be running out, one expert warned — after he sounded the alarm that an incoming interstellar object ...

If we ever make contact with aliens, our best bet might be to say as little as possible. A recent study, which uses game theory to simulate the outcomes of different strategies for communicating with ...