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Orion Parachute Test, Dec. 20, 2011
Orion Parachute Test, Dec. 20, 2011

JSC2011-E-217270 (20 Dec. 2011) A test article that mimics the Orion spacecraft is seen under parachutes Tuesday, Dec. 20, as…

Expedition 30 Lifts Off
Expedition 30 Lifts Off

The Soyuz TMA-03M rocket launches from the Baikonur Cosmodrome in Kazakhstan on Wednesday, Dec. 21, 2011, carrying Expedition 30 Soyuz…

Earth-class Planets Line Up
Earth-class Planets Line Up

This chart compares the first Earth-size planets found around a sun-like star to planets in our own solar system, Earth…

APOD: 2011 December 21 – A Horseshoe Einstein Ring from Hubble
APOD: 2011 December 21 – A Horseshoe Einstein Ring from Hubble

APOD Science APOD APOD: 2011 December 21 – A… Today’s APOD Archive Submissions Index Search Calendar RSS Education About Discuss…

Image of Comet C/2011 W3 (Lovejoy) as seen by the Hinode Satellite
Image of Comet C/2011 W3 (Lovejoy) as seen by the Hinode Satellite

Comet Lovejoy as seen by the Solar Optical Telescope (SOT) on Hinode as it approached the sun early on 16…

A ‘Rose’ Made of Galaxies
A ‘Rose’ Made of Galaxies

In celebration of the twenty-first anniversary of the Hubble Space Telescope's deployment in April 2011, astronomers at the Space Telescope…

Artist’s Concept of Kepler-20f
Artist’s Concept of Kepler-20f

NASA's Kepler mission has discovered the first Earth-size planets orbiting a sun-like star outside our solar system. The planets, called…

Artist’s Concept of Kepler-20e
Artist’s Concept of Kepler-20e

NASA's Kepler mission has discovered the first Earth-size planets orbiting a sun-like star outside our solar system. The planets, called…

APOD: 2011 December 20 – NGC 253: The Sculptor Galaxy
APOD: 2011 December 20 – NGC 253: The Sculptor Galaxy

APOD Science APOD APOD: 2011 December 20 – NGC… Today’s APOD Archive Submissions Index Search Calendar RSS Education About Discuss…

SOFIA Observatory Peers Into Heart of Orion Nebula
SOFIA Observatory Peers Into Heart of Orion Nebula

This graphical representation from the SOFIA Science Center compares two infrared images of the heart of the Orion nebula.