Normally when a medium-size star dies, it blasts away the bulk of material in its system. The Hubble discovery was surprising to astronomers because most would predict the distant icy worlds to be ...

In total, Saturn is thought to have at least 274 moons, the greatest number of natural satellites in the solar system. After its opposition, Saturn will stay visible for many weeks, but each passing ...

A former NASA photographer shares how she captured Houston's most iconic view of Endeavour's farewell flight, 13 years after ...

Earth has a number of mini-moons and quasi-moons. Mini-moons are objects that orbit our planet. But they make for fickle fans: They tend to swing around Earth for only a matter of months. One example ...

Building a city on the Moon will take more than rockets. NASA’s plan includes harnessing lunar resources, developing radiation-proof habitats, and creating sustainable life-support systems. From ...

Saturn’s moon Enceladus has long dazzled scientists with its icy plumes that spew water and mysterious organic molecules into space, fueling hopes of a habitable ocean beneath. But new experiments ...

You still may be able to spot the Milky Way's galactic center in the night sky across the US, but time is running out.

Analysis by researchers at the University of Bern suggests that water and other volatile compounds arrived on Earth from ...

Faint hydrogen signals from the cosmic Dark Ages may soon help determine the mass of dark matter particles. Simulations suggest future Moon-based observatories could distinguish between warm and cold ...

Material collected from an asteroid via spacecraft closely matches the heavier elements of the sun, providing scientists with ...

UTSA is teaming up with the Southwest Research Institute to test technology designed to solve challenges space missions may ...