Could the galaxy’s third confirmed interstellar visitor be an alien probe? The now christened comet 3I/ATLAS is sweeping past ...

The newest visitor from deep space, interstellar comet 3I/ATLAS, has arrived with a literal pulse that is stirring up talk of ...

Debris from a dismantled planet could be placed around a star to collect solar energy for power-hungry extraterrestrial civilisations. Such ‘Dyson spheres’ were the brainchild of physicist Freeman ...

The search for alien intelligence has mostly centered on waiting to hear any interstellar radio signals, but we might now have a way to see aliens as well. We just need to look for mega-engineering ...

The House Oversight Committee is holding a hearing about highly controversial claims that the US government is secretly hiding evidence of extraterrestrial life, and could even be working to ...