City Lights Illuminate the Nile    NASA image acquired October 13, 2012    The Nile River Valley and Delta comprise less than 5 percent of Egypt’s land area, but provide a home to roughly 97 percent of the country’s population. Nothing makes the location of human population clearer than the lights illuminating the valley and delta at night.

City Lights Illuminate the Nile NASA image acquired October 13, 2012 The Nile River Valley and Delta comprise less than 5 percent of Egypt’s land area, but provide a home to roughly 97 percent of the country’s population. Nothing makes the location of human population clearer than the lights illuminating the valley and delta at night.

~~Coronal Loops Reveal Magnetic Dance | Magnetic Dance: Solar material traces out giant magnetic fields soaring through the sun to create what's called coronal loops | NASA Goddard Photo and Video~~

~~Coronal Loops Reveal Magnetic Dance | Magnetic Dance: Solar material traces out giant magnetic fields soaring through the sun to create what's called coronal loops | NASA Goddard Photo and Video~~

Inside the Cupola, NASA astronaut Chris Cassidy, an Expedition 36 flight engineer, uses a 400mm lens on a digital still camera to photograph a target of opportunity on Earth some 250 miles below him and the International Space Station. Cassidy has been aboard the orbital outpost since late March and will continue his stay into September.

Inside the Cupola, NASA astronaut Chris Cassidy, an Expedition 36 flight engineer, uses a 400mm lens on a digital still camera to photograph a target of opportunity on Earth some 250 miles below him and the International Space Station. Cassidy has been aboard the orbital outpost since late March and will continue his stay into September.

Spacewalking Astronaut John Grunsfeld by NASA Goddard Photo and Video, via Flickr

Spacewalking Astronaut John Grunsfeld by NASA Goddard Photo and Video, via Flickr

Tour of the Moon [NASA] / #science!

Tour of the Moon [NASA] Although the moon has

Tour of the Moon [NASA] / #science!

NASA | Earth at Night: In daylight our big blue marble is all land, oceans and clouds. But the night - is electric. This new image is a composite of data acquired over nine days in April and thirteen days in October 2012. It took 312 satellite orbits and 2.5 terabytes of data to get a clear shot of every parcel of land surface. #Earth_at_Night #NASA

NASA | Earth at Night: In daylight our big blue marble is all land, oceans and clouds. But the night - is electric. This new image is a composite of data acquired over nine days in April and thirteen days in October 2012. It took 312 satellite orbits and 2.5 terabytes of data to get a clear shot of every parcel of land surface. #Earth_at_Night #NASA

Space Telescope or Transformer?The James Webb Space Telescope (JWST) is a large, infrared-optimized space telescope. The project is working to a 2018 launch date By NASA Goddard Photo and Video

Space Telescope or Transformer?The James Webb Space Telescope (JWST) is a large, infrared-optimized space telescope. The project is working to a 2018 launch date By NASA Goddard Photo and Video

A Cosmic Holiday Ornament, Hubble-Style by NASA Goddard Photo and Video, via Flickr

A Cosmic Holiday Ornament, Hubble-Style by NASA Goddard Photo and Video, via Flickr

High Resolution Image of Earth by NASA’s New Suomi NPP Satellite

High Resolution Image of Earth by NASA's New Suomi NPP Satellite

High Resolution Image of Earth by NASA’s New Suomi NPP Satellite

Hemispheric View of Venus by NASA Goddard Photo and Video, via Flickr  color coded to represent elevation (and to make it pretty;)

Hemispheric View of Venus by NASA Goddard Photo and Video, via Flickr color coded to represent elevation (and to make it pretty;)

Hubble reveals the Ring Nebula’s true shape: In this composite image, visible-light observations by NASA’s Hubble Space Telescope are combined with infrared data from the ground-based Large Binocular Telescope in Arizona to assemble a dramatic view of the well-known Ring Nebula. | NASA Goddard Photo & Video

Hubble reveals the Ring Nebula’s true shape: In this composite image, visible-light observations by NASA’s Hubble Space Telescope are combined with infrared data from the ground-based Large Binocular Telescope in Arizona to assemble a dramatic view of the well-known Ring Nebula. | NASA Goddard Photo & Video

Amazing Hi-Def CME by NASA Goddard Photo and Video, via Flickr

Amazing Hi-Def CME by NASA Goddard Photo and Video, via Flickr

NASA's MESSENGER Satellite Captures Spectacular Color Mosaic of Mercury | by NASA Goddard Photo and Video

NASA's MESSENGER Satellite Captures Spectacular Color Mosaic of Mercury | by NASA Goddard Photo and Video

From year to year, the moon never seems to change. Craters and other formations appear to be permanent now, but the moon didn't always look like this. Thanks...

From year to year, the moon never seems to change. Craters and other formations appear to be permanent now, but the moon didn't always look like this. Thanks...

NASA Hubble Finds a True Blue Planet By NASA Goddard Photo and Video This illustration shows HD 189733b, a huge gas giant that orbits very close to its host star HD 189733. The planet's atmosphere is scorching with a temperature of over 1000 degrees Celsius, and it rains glass, sideways, in howling 7000 kilometre-per-hour winds.

NASA Hubble Finds a True Blue Planet By NASA Goddard Photo and Video This illustration shows HD 189733b, a huge gas giant that orbits very close to its host star HD 189733. The planet's atmosphere is scorching with a temperature of over 1000 degrees Celsius, and it rains glass, sideways, in howling 7000 kilometre-per-hour winds.

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