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Kepler-11 System
Kepler-11 System

Kepler-11 is a sun-like star around which six planets orbit. At times, two or more planets pass in front of…

SOFIA
SOFIA

The German Receiver for Astronomy at Terahertz Frequencies spectrometer, or GREAT, is mounted on the Stratospheric Observatory for Infrared Astronomy’s…

Enceladus Jets
Enceladus Jets

This image of Saturn’s moon Enceladus was obtained by NASA’s Cassini spacecraft on Jan. 31, 2011. It shows the famous…

Saturn’s Moon Helene
Saturn’s Moon Helene

This image of Saturn’s moon Helene was obtained by NASA’s Cassini spacecraft on Jan. 31, 2011.

Remembering Challenger
Remembering Challenger

A wreath is displayed at the foot of the Space Mirror Memorial at the Kennedy Space Center Visitor Complex in…

SOFIA
SOFIA

The German Receiver for Astronomy at Terahertz Frequencies, or GREAT, instrument rests on its transport cart prior to installation on…

SOFIA
SOFIA

NASA and German scientists and technicians move the GREAT instrument near the Stratospheric Observatory for Infrared Astronomy’s telescope prior to…