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Apollo 15: Interplanetary Mountaineers
Apollo 15: Interplanetary Mountaineers

This LRO image shows the area surrounding Apollo 15’s landing site, annotated with the traverse plots of the mission’s first…

I Spy a Little Asteroid With My Infrared Eye
I Spy a Little Asteroid With My Infrared Eye

This image of asteroid 2011 MD was taken by NASA’s Spitzer Space Telescope in Feb. 2014, over a period of…

How to Measure the Size of an Asteroid
How to Measure the Size of an Asteroid

Observations of infrared light coming from asteroids provide a better estimate of their true sizes than visible-light measurements. This diagram…

Storm Cell Over the Southern Appalachian Mountains
Storm Cell Over the Southern Appalachian Mountains

This storm cell photo was taken from NASA’s high-altitude ER-2 aircraft on May 23, 2014, during a study aimed at…

Rosetta Closing In
Rosetta Closing In

This image of comet 67P/Churyumov-Gerasimenko was taken by the Onboard Scientific Imaging System (OSIRIS) on the European Space Agency’s Rosetta…

Space Launch System Model Undergoes Wind Tunnel Testing at NASA Langley
Space Launch System Model Undergoes Wind Tunnel Testing at NASA Langley

The aerodynamics team at NASA’s Langley Research Center in Virginia tested a model of the 70-metric-ton Space Launch System in…

Solid as a Rock? Porosity of Asteroids
Solid as a Rock? Porosity of Asteroids

Asteroids can differ in the degree of porosity, or the amount of empty space that makes up their structures. At…

ER-2 Cockpit during IPHEX Rainfall Measurement Campaign
ER-2 Cockpit during IPHEX Rainfall Measurement Campaign

The instrument panel illuminates the cockpit of NASA’s high-altitude ER-2 during a night mission over the eastern U.S. during the…

Storm Cell: IPHEX Rainfall Measurement Campaign
Storm Cell: IPHEX Rainfall Measurement Campaign

A storm system over North Carolina was the focus of a May 2014 flight by NASA’s ER-2 during the Integrated…

ISS Assembly Mission 3A
ISS Assembly Mission 3A

Arriving aboard space shuttle Discovery, the STS-92 crew installed the Z1-Truss. Inside the Z1 are four Control Moment Gyroscopes (CMGs)…