Earth is the only planet in the known universe that has the right combination of water, atmosphere, temperature, and chemical ...

An curved arrow pointing right. Space is so unfathomably large and so unbelievably weird, that it can sometimes be difficult to convey basic facts. For example, you can fit all of our solar system ...

Space is completely silent because there is no air, which prevents sound from traveling.

The scientists believed a homeless animal would be better equipped to endure the harsh conditions of space travel. That’s because these planets are primarily made from gas and have no solid surface.

A new AI model from the University of Bern predicts planetary systems likely to host Earth-like planets. It could boost the ...

It has a diameter of roughly 4,222 miles (6,794 km) — about half Earth's diameter, according to the European Space Agency (ESA). The Red Planet is rocky, much like Earth. The inside structure of ...

While its orbit is elliptical like all the others, it is the only planet that sometimes crosses inside the orbit of another. So, rather than floating out in the deep reaches of space all by its ...

The European Space Agency (ESA) just released some new snapshots from its Mars Express orbiter that detail the dynamic ...

NASA is preparing to launch its latest space observatory ... Here are five key facts about this groundbreaking mission. One ...

BepiColombo is a joint space mission by the European Space Agency (ESA ... touch a fragment of the Moon and lay your hands on a meteorite older than our planet. Explore facts about Mars, the red ...

An curved arrow pointing right. Space is so unfathomably large and so unbelievably weird, that it can sometimes be difficult to convey basic facts. For example, you can fit all of our solar system ...