The two alien worlds make extremely close approaches to each other every 97 days, on average; during those cosmic family reunions, the two planets are separated by less than five Earth-moon distances.

The two alien worlds make extremely close approaches to each other every 97 days, on average; during those cosmic family reunions, the two planets are separated by less than five Earth-moon distances.

The flares may heat up and inflate the planet's atmosphere, which is dominated by hydrogen and helium. Being lashed by these ...

Far beyond the eight familiar planets in our solar system, ... Alien planets that really exist. Brandon Specktor. Sat, May 17, 2025 at 3:30 PM UTC.

Comet or asteroid heading for the Sun is only the third time an interstellar object has been spotted inside our group of ...

Alien life is out there. Can AI find it? It’s the ultimate game of find a needle in the haystack. One NASA scientist is betting on AI to help expedite the search through billions of planets.