NASA

NASA has made the announcement that it will start accepting applications for its next class of astronaut candidates in November.

As if the news about the Arctic's ozone hole outsizing the hole in Antarctica in early 2011 wasn't bad enough, Tuesday, NASA officials released more bad news: sea ice covering the Arctic Ocean reached its second lowest level in recorded history in September.

Private sector companies working on sending people into space, but progress is slow.

Wanna become an astronaut? Now's your chance. NASA will begin in November accepting applications for astronauts from the general public for the first time.

There are unprecedented levels of depletion of the ozone layer, above the Arctic Circle, this spring, according to a NASA-led study. The research was conducted by a team of scientists from 19 institutions across nine countries, including Canada and the United States.

The Arctic saw massive ozone losses in 2011 due to a prolonged period of extremely low temperatures in the stratosphere, according to a NASA-led study.

NASA administrator Charles Bolden calls for more international cooperation.

The U.S. government dangled a million-dollar carrot in front of the aviation industry to develop fuel-efficient aircraft and usher in a new electric airplane industry. On Monday, one competitor, team Pipistrel-USA.com of State College, Pa., came forth as the winner and grabbed the $1.35 million prize in the CAFE Green Flight Challenge, sponsored by search-engine hub Google and awarded by NASA.

The 100-Year Starship Symposium blasted off in Orlando Florida with discussions ranging from what type of vehicle could star trek to procreating in space.

Scientists have identified unprecedented levels of depletion of the ozone layer above the Arctic this spring. These levels were comparable to those found in the Antarctic, where a hole has formed every spring since the mid-1980s.

NASA leaders are moving forward with discussion on acquisition plans for the agency's Space Launch System (SLS), which they say will create high-quality jobs in America.

Analysis of new observations from NASA's infrared space telescope shows that there are fewer near-Earth asteroids that are large enough to destroy the planet than previously thought.

Mercury, the tiny rocky planet closest to the sun, may have a lot common with Earth, but a spacecraft sent to the least-explored planet in the system is providing surprising data that has revolutionized the way scientists think about the innermost planet.

The latest observations by NASA's NEOWISE mission that mapped the entire sky are suggesting that there are lesser likely threatening asteroids in the solar system than previously thought.

NASA's Mercury probe has found hollows indicating a probable widespread flood volcanism on its surface, the U.S. space agency says.

New close-up images and data provided by NASA's MESSENGER spacecraft have revealed an unforeseen class of landform on the planet Mercury.

New observations by a NASA space telescope that mapped the entire sky suggest that there are fewer potentially threatening asteroids in the solar system than previously thought.

China has embarked on a plan to launch a new space lab on Thursday beginning with the lift off of its 8.5-ton Tiangong-1 space module. Developing nations across the world are launching space and science research that could put them on the path to charting their own future.

Those worried about getting hit by NASA's defunct Upper Atmosphere Research Satellite (UARS) can breathe a sigh of relief. The satellite fell into the Pacific Ocean sometime between 11:23pm Friday and 1:09am Eastern Saturday morning, Sept 23.

In the coming years, as a result of changes, in solar activity, radiation hazards are likely to increase for both air travelers and astronauts.

Amateur astronomers working with the online citizen science project Planet Hunter have discovered two potential exoplanets, according to reports.