Spiral Galaxy M100
 Hubblesite

Cassiopeia A
 NASA

Antennae Galaxies
NASA Hubble Space Telescope Hubblesite

Apollo 11 astronauts Neil Armstrong and Buzz Aldrin
AP Photo/NASA Associated Press

Apollo 16 Command and Service Module Over the Moon
April 23, 1972 NASA

Astronaut John W. Young
April 20, 1971 NASA

"Giant Leap for Mankind"
July 20, 1969 Life

Astronaut Eugene Cernan
 Airport Journals

Uranus and Ariel
 Hubblesite

Barred Spiral Galaxy
 Hubblesite

Saturn's Magnificent Rings
NASA and The Hubble Heritage Team (STScI/AURA) NASA

Hubble captures Celestial Wheel within a Wheel
 Space.com

The "Ant Nebula"
NASA, ESA and The Hubble Heritage Team (STScI/AURA) Hubble Heritage Project

The "Spirograph" Nebula
NASA and The Hubble Heritage Team (STScI/AURA) Hubble Heritage Project

Robot Arm Over Earth with Sunburst
 NASA

Callisto's Icy Surface
 NASA/Ames Research Center

Ghostly Reflections in the Pleiades
 Hubble Heritage Project

Planetary Nebula NGC 2346
 Hubble Heritage Project

Venus' "Acid Rain"
 Hubblesite

Ancient Storm in the Atmosphere of Jupiter
 Hubblesite

Neptune: "weirdest weather in the solar system"
 Hubblesite

Bright Clouds on Uranus
 Hubblesite

Apollo 9 Lunar Module "Spider" in Earth Orbit
 NASA

Skylab and Earth
 NASA

Apollo 9 Lunar Module "Spider" Over the Ocean
 NASA

Dying Star Creates Fantasy-like Sculpture of Gas and Dust
 Hubblesite

Space Phenomenon Imitates Art in Universe's Version of van Gogh Painting
 Hubblesite

Hubble Space Telescope
 Associated Press

Egg Nebula
NASA and The Hubble Heritage Team (STScI/AURA) Hubblesite

Iridescent Glory of Helix Nebula
 Hubblesite

Comet Halley in 1910
 NASA

Sombrero Galaxy
 Hubblesite

Crab Nebula
 Hubblesite

Omega/Swan Nebula
 Hubblesite

Comet McNaught flashes through sky
AFP/David Lillo AFP

Lunar Grand Prix
Image credit: NASA NASA

Riding Piggyback
Image credit: NASA/Carla Thomas NASA

Bubble Nebula
Image credit: NASA NASA

The Face on Mars

Neptune has a 'warm' south pole, astronomers find
2001 shows the planet Neptune. An international team of astro- nomers say that Neptune, long dismissed as a cobalt-blue gas giant cloaked in deathly cold, has a relatively warm south pole. (AFP/NASA-HO/File) AFP

Scientists lift veil on Saturn's weird moons
This March 2006 NASA Cassini space probe mosaic image shows Saturn's moon Enceladus. Little by little, two moons of Saturn that rank among the enduring enigmas of the Solar System are shedding their mystery. Using the orbiting US-Italian probe Cassini, scientists are getting astonishing close-up looks of Enceladus. and Iapetus.(AFP/NASA/File) AFP

Planet X - Nibiru
Planet X shown from the towercam atop Mt. Wilson Observatory.

Saturn's Moon Enceladus
NASA/JPL-Caltech NASA

Saturn's moon Mimas
NASA/JPL/SSI NASA

Jupiter from Cassini-Orbiter
 JPL

Saturn's Rings, Surface, Moons Captured By NASA's Cassini Spacecraft
NASA/JPL-Caltech/Space Science Institute Huffington Post

'Black Eye' Galaxy
Messier 64 (M64) has a spectacular dark band of absorbing dust in front of a bright nucleus, giving rise to its nicknames of the "Black Eye" galaxy. Reuters

Earth from Space
 AFP

Full Moon

Mars Monolith
Image: NASA

Astronaut Buzz Aldrin
 Buzz Aldrin

Space Shuttle Atlantis
The space shuttle Atlantis touches down at the NASA Dryden Flight Research Center at Edwards Air Force Base, Calif., at the conclusion of mission STS-125 to repair the Hubble space telescope, Sunday, May 24, 2009. (AP Photo/Reed Saxon)

Phoenix Mars Lander
This image provided by NASA shows an image taken by the Surface Stereo Imager on Sol 49, or the 49th Martian day of the mission Monday July 14, 2008, shows the silver colored rasp protruding from NASA's Phoenix Mars Lander's Robotic Arm scoop. The scoop is inverted and the rasp is pointing up. Shown with its forks pointing toward the ground is the thermal and electrical conductivity probe, at the lower right. (AP Photo/NASA)

Our Sun

Mercury has a comet-like tail
Nov. 3, 2009. This enhanced-color view was created with a statistical technique that highlights subtle color variations seen in the 11 filters of MESSENGER's wide-angle camera. The colors are often related to the composition of underlying material. NASA

Wind and Snow Do Strange Things on Mars
This is one of the newly posted images from more than 1,000 observations by the high resolution camera on NASA's Mars Reconnaissance Orbiter provided by NASA Thursday Sept. 18, 2008. This image shows the Dune Field in an Impact Crater Near Cerberus Fossae. AP Photo/NASA - JPL/University of Arizona Space.com

Mosaic of Venus' Surface
In this photo released by the European Space Agency on Wednesday, Nov. 28, 2007, the mosaic of the Venusian surface, obtained thanks to radar images from NASA's Magellan spacecraft, is seen. Nearby planet Venus is looking a bit more Earth-like with frequent bursts of lightning confirmed by a new European space probe. For nearly three decades, astronomers have said Venus probably had lightning, ever since a 1978 NASA probe showed signs of electrical activity in its atmosphere. But experts were not sure because of signal interference. Gaps in the Magellan data were filled in with Pioneer and Venera data. (AP Photo/ESA/NASA/HO) Associated Press

Saturn's Hexagon
The Cassini spacecraft circling Saturn takes a look at an odd hexagon-shaped feature at the ringed planet's north pole. NASA released the view above, which yields an infrared take on the Saturnian oddity. The red color indicates heat, which wells up from the warm interior of Saturn, while clouds about 62 miles (100 kilometers) block light to cause the dark silhouette lines. The blue hues are the result of sunlight striking the far edge of Saturn, since the rest of this image was taken during nighttime conditions. Cassini used its visual and infrared mapping spectrometer to capture this view in what is the first complete look of the entire feature and north pole region in a single shot. Scientists have known about Saturn's odd hexagon-like feature for more than two decades, when it turned up in images snapped by NASA's Voyager 1 & 2 probes.

Wow!
The code "6EQUJ5" indicates a radio signal detected in 1977 at the Big Ear Radio Observatory in Ohio - a signal so strong that astronomer Jerry Ehman wrote "Wow!"

Eagle Nebula
A detail of the Eagle Nebula (M16) showing a portion of a pillar of gas and dust. Light from nearby bright, hot, young stars is sculpting the cloud into intricate forms and causing the gas to glow. Hubblesite

Mars Orbiter Camera
In this photo provided by NASA, a suite of mid-latitude gullies on a crater wall are seen as captured by the Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC). These gullies, which may have formed in relatively recent martian history by erosion caused by flowing, liquid water, are located in a crater on the east rim of Newton Crater.

Face on Mars
A feature on the surface of Mars, in which some people believe they see a face, is shown in a photograph sent by the Viking spacecraft July 31, 1976. The 1976 NASA press release said the formation "resembles a human head." However, NASA scientists had already correctly interpreted the image as an optical illusion caused by the illumination angle of the Sun, the formation's surface morphology and the resulting shadows, giving the impression of eyes, nose and mouth. (AP Photo/NASA)

Saturn's Moon Titan
AFP/NASA-HO/File NASA