NASA ScienceCasts

The cosmic ray detector known as CREAM is headed for the International Space Station, with a goal of measuring the highest energy possible for direct measurement of high-energy cosmic rays.

The Perseid meteor shower will peak on August 11, 12, and 13, and a Total Solar Eclipse will be visible in the United States from coast to coast on August 21.

NASA is hunting for near-Earth objects, while also working on ways to defend Earth against them.

Intense solar activity such as sunspots and solar flares subsides during solar minimum, but that doesn’t mean the sun becomes dull. Solar activity simply changes form.

Scientists have been studying plant growth on the International Space Station. The results could help boost the productivity of both extraterrestrial and earthly gardens.

NASA's OMG and Operation IceBridge missions are investigating the thinning of Greenland's ice sheets from both above and below.

NASA studies are looking at the effects of space travel on the human body's immune system.

Sounding rocket missions can often be the key to getting a quick answer to a tightly focused science question.

In 2017 and 2018, three comets will pass near the Earth providing the opportunity to observe and study these icy interlopers.

Stringent testing is underway to prove the James Webb Space Telescope can handle an Earth-shaking take-off and still capture the universe’s first light while deeply ensconced in the hyper-cold of space.