The raw materials for high-energy reactions are difficult and expensive to make, but production may be feasible in 50 years
A fireball was recorded entering the gas giant's atmosphere on September 10, reminiscent of the scarring impact of Comet Shoemaker-Levy 9 there in 1994
Similarities in the upper atmospheres of the three planets may be due to meteoroids' shedding heavy elements as they pass through
Decades after Apollo 13, NASA engineers and astronauts can still improvise solutions for sticky situations in space
As we come to the peak of the sun's activity cycle, scientists expect more dazzling, but possibly disruptive, displays
A new study indicates that stellar explosions can involve many different kinds of stars
NASA's next low-budget planetary mission will land a probe on Mars in 2016 to investigate the Red Planet's inner workings
The six-wheeled robot is carrying 10 science instruments—and a wealth of high-tech camera gear
The lack of even one openly gay or lesbian living astronaut in the history of American spaceflight may reflect the culture at the NASA astronaut office
Gliese 581 g shot to the top of a list put out by researchers at the University of Puerto Rico at Arecibo’s Planetary Habitability Laboratory (PHL) after a new study marshaled support for its long-debated existence...
The finding could be put to use at a new facility opening in 2020 that might create new elements—that is, nuclei with more than 118 protons—in addition to new isotopes of the known elements...
The same lab that first reported the shocking results last year, which could have upended modern physics, now reports that neutrinos "respect the cosmic speed limit"
To celebrate the last transit of Venus in the 21st century, astronomers and skywatchers came together in many sites around the world
Tarter is shifting into a full-time fund-raising role for the SETI Institute, which had to shut down a set of alien-hunting radio telescopes for more than seven months last year due to budget shortfalls...
The company's Falcon 9 liftoff this morning represents the potential of a new era in U.S. spaceflight, the White House science adviser says
Science fiction writers will always, by definition, be one step ahead of engineers, and interstellar travel and time travel still elude them
This is the first widely visible "ring of fire" solar eclipse in the U.S. in nearly 18 years
Scientists are shocked to find that a giant shock wave long suspected of existing in front of the sun is not there
Data from the Dawn spacecraft now reveal that Vesta, as wide as the state of Arizona, is large enough to have had its own internal geologic evolution
Blue Origin's spacecraft sports a biconic shape and recently underwent wind tunnel testing at a Lockheed Martin facility in Dallas