NASA's two stuck astronauts are taking their first spacewalk together, exiting the International Space Station almost eight ...

Asteroid samples fetched by NASA hold not only the pristine building blocks for life but also the salty remains of an ancient water world, scientists reported Wednesday.

It's called Malo kingi, aka the "common kingslayer," a jellyfish that's one of the most venomous animals on the planet. It is ...

February brings a rare planetary parade, with five bright planets in clear view and a special alignment of Mercury and Saturn ...

NASA has recorded the most powerful volcanic eruption in history on Jupiter's moon Io. New images acquired by the Juno spacecraft provide insight into the nature of the moon.

Asteroid samples fetched by NASA hold not only the pristine building blocks for life but also the salty remains of an ancient ...