The ice-covered ocean of Jupiter's moon is the prime spot to look for life in our solar system, they say.
Weekes, a pioneer of gamma-ray astronomy, searches for the enormously energetic particles coming from pulsars, supernovae and black holes.
A French designer has created the first art book of HiRISE camera images of Mars
The University of Arizona's astronomy graduate students hope to persuade their department, their college and the Board of Regents to acknowledge them as astrophysicists as well as astronomers.
Explore the cosmos, visit the rain forest and learn the secret of happiness in a series of scientific lectures this fall.
The sun's activity is well below historical levels and could be headed even lower.
CAPE CANAVERAL, Fla. — NASA still doesn’t know exactly how water gushed into the helmet and suit of a spacewalking astronaut.
PASADENA, Calif. — Jason-1, a satellite that for more than a decade precisely tracked rising sea levels across a vast sweep of ocean and helped forecasters make better weather and climate predictions, has ended its useful life after circling the globe more than 53,500 times, NASA announced W…
LOS ANGELES — NASA’s Opportunity rover is rolling across the Martian surface again, leaving behind a clay-rich rock in search of more discoveries.
LOS ANGELES — NASA’s Kepler planet-hunting telescope is broken, potentially jeopardizing a mission that opened up whole new possibilities on life outside the solar system.
President Obama's proposed budget had good and bad news for Tucson-area astronomers and space scientists, most of it anticipated.
WASHINGTON — It’s been a while since NASA’s been known as a place for space cowboys.
You won't be able to see the asteroid that will streak by Earth at a close but safe distance today.
An asteroid about the size of the one that created Arizona's Meteor Crater will whiz by Earth on Feb. 15, getting closer to us than some of our orbiting communications satellites.
PASADENA, Calif. — A pair of NASA spacecraft tumbled out of orbit around the moon and crashed back-to-back into the surface on Monday, ending a mission that peered into the lunar interior.
WASHINGTON - A private rocket successfully sent a capsule full of cargo zipping toward the International Space Station in a first of its kind delivery for NASA, but couldn't deliver on job No. 2: putting a commercial satellite into the correct orbit.
The space shuttle Endeavour, riding piggyback on a modified jumbo jet, flies north of"A" Mountain on its way to the California Science Center in Los Angeles. The low flyover Thursday was a tribute to former U.S. Rep. Gabrielle Giffords and her husband, ex-astronaut Mark Kelly.
The shuttle Endeavour flew over Tucson Thursday morning, prompting thousands of people across the city to pull out cameras and cellphones to document a piece of its farewell voyage across the country.
Spectators snap photos of Endeavour riding on a NASA 747 as it flew over the University of Arizona Mall.
The space shuttle that flew on NASA’s next-to-last shuttle flight is expected to make an appearance Thursday in the skies over Tucson as it heads to its final home in California.