If aliens do exist, posits theoretical physicist Michio Kaku, why would they want anything to do with us?
It would be disappointing and surprising if Earth were the only template for habitability in the Universe.
New research on Uranus' magnetosphere could help scientists learn about distant systems, and refine the ways they search for alien life.
A very small person asks a very big question: why aren't the moons of gaseous planets also made of gas?
Scientists propose an unexpected location for extraterrestrial life.
The mystery behind star KIC 8462852 (aka Tabby Star) continues. Many scientists have proposed ideas but all explanations (so far) seem as unlikely as the Dyson Sphere theory.