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What is a coronal mass ejection or CME?
What is a coronal mass ejection or CME?

What is a coronal mass ejection or CME?

What is a solar prominence?
What is a solar prominence?

What is a solar prominence?

What is a solar flare?
What is a solar flare?

What is a solar flare?

What is solar activity?
What is solar activity?

What is solar activity?

A NASA Satellite View of U.S. Northeastern Snow
A NASA Satellite View of U.S. Northeastern Snow

NASA's Terra satellite captured this image of the snow on the ground in the northeastern U.S. and Canada on March…

Visual Exam
Visual Exam

NASA astronaut Steve Swanson, Expedition 40 commander, performs a visual exam using an eye chart (out of frame) in the…

EVA 50th Anniversary Monthly Themes – February – Safety in Space
EVA 50th Anniversary Monthly Themes – February – Safety in Space

#SuitUp with NASA for the #JourneytoMars. Find out more at https://www.nasa.gov/suitup

Free Fall in the Zero G
Free Fall in the Zero G

A drop vehicle is retrieved after free falling 432 feet in the NASA Glenn Zero Gravity facility.

Ceres Seen From NASA’s Dawn Spacecraft
Ceres Seen From NASA’s Dawn Spacecraft

This image of Ceres was taken by NASA's Dawn spacecraft on March 1; on March 6, the mission achieved orbit…

Irradiated Enamel Slabs
Irradiated Enamel Slabs

Enamel/dentin slabs of human molars irradiated with focused microwave energy.