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Going to Extremes
Going to Extremes

NASA Glenn’s Extreme Environments Rig (GEER) is designed to put Venus bound spacecraft through tests that include 1,000 degree Fahrenheit…

APOD: 2014 April 10 – Mars, Ceres, Vesta
APOD: 2014 April 10 – Mars, Ceres, Vesta

APOD Science APOD APOD: 2014 April 10 –… Today’s APOD Archive Submissions Index Search Calendar RSS Education About Discuss  …

APOD: 2014 April 9 – Two Rings for Asteroid Chariklo
APOD: 2014 April 9 – Two Rings for Asteroid Chariklo

APOD Science APOD APOD: 2014 April 9 – Two… Today’s APOD Archive Submissions Index Search Calendar RSS Education About Discuss…

BASS-II Inflight Maintenance
BASS-II Inflight Maintenance

Expedition 39 Flight Engineer Rick Mastracchio performs inflight maintenance on an experiment called Burning and Suppression of Solids (BASS)-II.

Southwestern Australia Pre-Winter Storm
Southwestern Australia Pre-Winter Storm

One of the Expedition 39 crew members photographed this pre-winter storm located just off the coast of southwestern Australia.

Steve Swanson Participates in Body Mass Measurement
Steve Swanson Participates in Body Mass Measurement

NASA astronaut Steve Swanson, Expedition 39 flight engineer, participates in body mass measurement/Russian biomedical routine assessments.

Looking Down on Lakes
Looking Down on Lakes

The Cassini spacecraft peers down through layers of haze to glimpse the lakes of Titan's northern regions.Titan (3,200 miles, or…

Diagram of Umbra and Penumbra
Diagram of Umbra and Penumbra

During an eclipse, two shadows are cast. The first is called the umbra (UM bruh). This shadow gets smaller as…

Moon’s Shadow on Earth During Solar Eclipse
Moon’s Shadow on Earth During Solar Eclipse

During a solar eclipse, the moon casts a large shadow onto Earth's surface. Image Credit: Centre National d’Etudes Spatiales (CNES)

Annular Eclipse
Annular Eclipse

An annular eclipse happens when the moon is farthest from Earth.