A strange object hurdling through our solar system from interstellar space may, according to one of academia's most controversial astronomers, have been sent by aliens to see how smart we are. The ...

Scientists propose a universal test that could detect alien life without assuming it resembles any biology found here on ...

Astronomers are closely monitoring interstellar object 3I/ATLAS as it approaches its perihelion on 29 October—a critical moment that could test the controversial “alien mothership” hypothesis.

Today marks a celestial moment of truth. As the interstellar comet 3I/ATLAS reaches its closest point to the Sun, a controversial theory faces its final test: is it just a comet, or an alien ...