The curious minds at What If explore what would happen if there is alien life on Jupiter's moon Europa.

Humans have been searching for alien life for a long time, yet have never found any signs. Newly appointed Chair of the UAP Science Council for the White House, Avi Loeb sheds light on how to search ...

The curious minds at What If explore what would happen if Earth had Jupiter's moons.

Juno reveals Io's subsurface heat, showing intense volcanic activity. NASA's mission provides new insights into Jupiter's ...

Given the size and age of the universe, it should be full of species with technology far more advanced than our own. But so far there is no trace ...

Long written off in school textbooks as a passive celestial giant marked by a centuries-old storm, Jupiter is emerging through new deep-space telemetry not merely as a planet of extreme physics, but a ...

A planet alignment, a solar eclipse and the peak of the summer’s most active meteor shower is set to converge on Aug. 12.

Add Yahoo as a preferred source to see more of our stories on Google. A rocky planet orbiting in the habitable zone of a sun-like star may look like a perfect place for life to thrive — but not if ...

We have known for a while that the Milky Way is full of homeless worlds. Rogue planets, free-floating planets—call them what ...

Politicians and scientists are united in their effort to better understand what have long been known as UFOs.

Finding out about distant worlds and their potential for life is clearly on a lot of astronomers’ minds. The other thread we have spotted is using the physics-defying properties of our craft to go ...

A discovery in a solar system 73 light-years from Earth is challenging definitions and “blurring the lines between stars, planets, and moons.” ...