President Obama's budget for NASA seeks to end its back-to-the-moon program, rely more heavily on private companies, and invest in new technologies for human space exploration.
Contrails from airplanes impact temperatures at Earth's surface. But do they raise or lower them?
A decline in stratospheric water vapor between 2000 and 2009 followed an apparent increase between 1980 and 2000, a team of scientists has found. That finding may have implications for global warming.
Spirit, one of NASA's Mars rovers, has been stuck in a crater for the past 10 months. NASA scientists say that if it survives the harsh Martian winter, it can be a valuable stationary research platform.
This view from the panoramic camera on NASA's Mars Exploration Rover Spirit shows the terrain surrounding the location called 'Troy,' where Spirit became embedded in soft soil during the spring of 2009. The track on the right is more evident because Spirit was driving backwards, dragging its right-front wheel, one of two wheels which no longer rotates. The bright soil in the center foreground is soft material in which Spirit became embedded after the wheels on that side cut through a darker top layer.
A periodic climate phenomenon, El Nino has prompted storms to smack southern California this week rather than the Pacific Northwest. But Indonesia and parts of Australia are also affected, except they're too dry.
A wireless connection on the International Space Station allowed NASA Flight Engineer T.J. Creamer to log on to Twitter.
Bring spring indoors with houseplants. Here's how to be a success.
NASA's Interstellar Boundary Explorer (IBEX) spacecraft recently detected a mysterious ribbon of particles at the edge of the solar system. Scientists now say it may have been formed by atoms reflected back into the solar system by the Milky Way's magnetic field.