A laser could hide – or broadcast – our existence.
European Southern Observatory
There are technological ways to hide a planet from intergalactic detection – as well as ways to signal that we're just sitting here, eager for contact.
Water has been detected in the atmosphere of a massive, hot planet orbiting the nearby star tau Boötis. Led by Alexandra…
Are we getting closer to solving one of life’s greatest mysteries?
During a lunch in the summer of 1950, physicists Enrico Fermi, Edward Teller and Herbert York were chatting about a recent New Yorker cartoon depicting aliens abducting trash cans in flying saucers. Suddenly…
Artistic view of a close-up of a supermassive black hole. This image shows the material surrounding the black hole, which ultimately will fall in the central region releasing the X-ray radiation detected in this work.
Astrophysicists have discovered black holes that formed up to 12.5 billion years ago – among the oldest examples of the phenomena…