The Metropolitan Library System is offering free space-themed spring break activities for kids, including rocket building, astronaut food and hands-on science programs.

Learn about the particles showering down on Earth and how scientists find them at annual Arthur H. Compton Lecture series ...

These three exoplanets are among the least dense ever found, and all attempts to probe their atmospheres have been blocked by a mysterious smog.

Cosmic rays are one of the greatest challenges for space travel and pose a considerable risk to humans and materials. For the first time on European soil, an international research team in ...

Not even an asteroid blast could kill it.

Out of the 6,000 known exoplanets, it's these rocky worlds that are most worthy of attention in the search for life beyond ...

Kepler-51d is a giant, ultra-light “super-puff” planet wrapped in an unusually thick haze that’s blocking scientists from ...

Astronomers have tracked a powerful blast of radiation back to its source, finding a neutron star collision within colliding galaxies.

Beyond the asteroid belt lies a vast region dominated by giant planets and frozen worlds. This video explores the colossal ...

Oxygen has been the most important gas in our search for life among the cosmos thus far. On Earth, we have it in abundance ...

The space-faring mice spent about 28 days in those conditions before returning to Earth in April. Mortreux and her colleagues then analyzed the weight, strength and movement of the 23 surviving ...

This story first appeared in PA Local, a weekly newsletter by Spotlight PA taking a fresh, positive look at the incredible people, beautiful places, and delicious food of Pennsylvania. Sign up for ...