Explore astronomy, from the latest trip to the International Space Station to alien planets outside our solar system.
Experts: Work needs to be done in order to forecast solar storms, and to prepare safeguards against electrical malfunctions.
Shuttle will deliver a humanoid robot and an additional storage room for the International Space Station.
A solar storm could disrupt technologies, scorch satellites, crash stock markets and cause power outages that last weeks or months.
A NASA spacecraft heading for Mercury beams back an amazing space photo: A family portrait of all the major planets except Uranus and Neptun.
Intense solar flares, on track for the next two years, can wreak havoc on electronic communications, potentially causing up to $2 trillion in damages.
Radiation from solar flare disrupts communications, power grids and the Northern Lights.
Unmanned craft designed to deliver food, supplies, tools and oxygen to the International Space Station.
The sun released a humongous solar flare Feb. 14, hurling a wave of charged particles from a storm of electrified gas.
The spacecraft's flyby showed erosion on the Tempel 1's surface and revealed the first clear pictures of the crater made by a Deep Impact probe.
Photos of Tempel 1 will probably be the Stardust spacecraft's last as it is running low on fuel.
Budget does provide money for NASA to assist private companies in funding commercial spaceflight.
Obama would restrict NASA's budget to last year's levels of $18.7 billion, a 1.6-percent decrease from the spending total the agency had sought.
Space radiation can damage sperm and cause sterility.
NASA proposal seeks $160 million from companies to pay for Mars trip and colony.
NASA hopes the glimpse of the comet will help scientists understand how comets form.
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