Photos: Month in Space: January 2014

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  1. Southern stargazing

    Stars, galaxies and nebulas dot the skies over the European Southern Observatory's La Silla Paranal Observatory in Chile, in a picture released on Jan. 7. This image also shows three of the four movable units that feed light into the Very Large Telescope Interferometer, the world's most advanced optical instrument. Combining to form one larger telescope, they are greater than the sum of their parts: They reveal details that would otherwise be visible only through a telescope as large as the distance between them. (Y. Beletsky / ESO) Back to slideshow navigation
  2. A balloon's view

    Cameras captured the Grandville High School RoboDawgs' balloon floating through Earth's upper atmosphere during its ascent on Dec. 28, 2013. The Grandville RoboDawgs’ first winter balloon launch reached an estimated altitude of 130,000 feet, or about 25 miles, according to coaches Mike Evele and Doug Hepfer. It skyrocketed past the team’s previous 100,000-feet record set in June. The RoboDawgs started with just one robotics team in 1998, but they've grown to support more than 30 teams at public schools in Grandville, Mich. (Kyle Moroney / AP) Back to slideshow navigation
  3. Spacemen at work

    Russian cosmonauts Oleg Kotov, right, and Sergey Ryazanskiy perform maintenance on the International Space Station on Jan. 27. During the six-hour, eight-minute spacewalk, Kotov and Ryazanskiy completed the installation of a pair of high-fidelity cameras that experienced connectivity issues during a Dec. 27 spacewalk. The cosmonauts also retrieved scientific gear outside the station's Russian segment. (NASA) Back to slideshow navigation
  4. Special delivery

    The International Space Station's Canadian-built robotic arm moves toward Orbital Sciences Corp.'s Cygnus autonomous cargo craft as it approaches the station for a Jan. 12 delivery. The mountains below are the southwestern Alps. (NASA) Back to slideshow navigation
  5. Accidental art

    A piece of art? A time-lapse photo? A flickering light show? At first glance, this image looks nothing like the images we're used to seeing from the Hubble Space Telescope. But it's a genuine Hubble frame that was released on Jan. 27. Hubble's team suspects that the telescope's Fine Guidance System locked onto a bad guide star, potentially a double star or binary. This caused an error in the tracking system, resulting in a remarkable picture of brightly colored stellar streaks. The prominent red streaks are from stars in the globular cluster NGC 288. (NASA / ESA) Back to slideshow navigation
  6. Supersonic test flight

    A camera looking back over Virgin Galactic's SpaceShipTwo's fuselage shows the rocket burn with a Mojave Desert vista in the background during a test flight of the rocket plane on Jan. 10. Cameras were mounted on the exterior of SpaceShipTwo as well as its carrier airplane, WhiteKnightTwo, to monitor the rocket engine's performance. The test was aimed at setting the stage for honest-to-goodness flights into outer space later this year, and eventual commercial space tours.

    More about SpaceShipTwo on PhotoBlog (Virgin Galactic) Back to slideshow navigation
  7. Red lagoon

    The VLT Survey Telescope at the European Southern Observatory's Paranal Observatory in Chile captured this richly detailed new image of the Lagoon Nebula, released on Jan. 22. This giant cloud of gas and dust is creating intensely bright young stars, and is home to young stellar clusters. This image is a tiny part of just one of 11 public surveys of the sky now in progress using ESO telescopes. (ESO/VPHAS team) Back to slideshow navigation
  8. Fire on the mountain

    This image provided by NASA shows a satellite view of smoke from the Colby Fire, taken by the Multi-angle Imaging SpectroRadiometer aboard NASA's Terra spacecraft as it passed over Southern California on Jan. 16. The fire burned more than 1,863 acres and forced the evacuation of 3,700 people. (NASA via AP) Back to slideshow navigation
  9. Where stars are born

    An image captured by NASA's Spitzer Space Telescope shows the Orion Nebula, an immense stellar nursery some 1,500 light-years away. This false-color infrared view, released on Jan. 15, spans about 40 light-years across the region. The brightest portion of the nebula is centered on Orion's young, massive, hot stars, known as the Trapezium Cluster. But Spitzer also can detect stars still in the process of formation, seen here in red hues. (NASA / JPL-Caltech) Back to slideshow navigation
  10. Cygnus takes flight

    Orbital Sciences Corp.'s Antares rocket rises from NASA's Wallops Flight Facility on Wallops Island, Va, on Jan. 9. The rocket sent Orbital's Cygnus cargo capsule on its first official resupply mission to the International Space Station. (Chris Perry / NASA) Back to slideshow navigation
  11. A long, long time ago...

    This long-exposure picture from the Hubble Space Telescope, released Jan. 8, is the deepest image ever made of any cluster of galaxies. The cluster known as Abell 2744 appears in the foreground. It contains several hundred galaxies as they looked 3.5 billion years ago. Abell 2744 acts as a gravitational lens to warp space, brightening and magnifying images of nearly 3,000 distant background galaxies. The more distant galaxies appear as they did more than 12 billion years ago, not long after the Big Bang. (NASA / NASA via AFP - Getty Images) Back to slideshow navigation
  12. Frosty halo

    Sun dogs are bright spots that appear in the sky around the sun when light is refracted through ice crystals in the atmosphere. These sun dogs appeared on Jan. 5 amid brutally cold temperatures along Highway 83, north of Bismarck, N.D. The temperature was about 22 degrees below zero Fahrenheit, with a 50-below-zero wind chill.

    Slideshow: The Year in Space (Brian Peterson / The Bismarck Tribune via AP) Back to slideshow navigation
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updated 3/6/2009 12:23:51 PM ET 2009-03-06T17:23:51

As missions go, the name Kepler might one day be just as famous as Hubble or Apollo, which are legendary for changing the course of history with their scientific breakthroughs.

NASA is set to launch the new planet-hunting spacecraft tonight. If Kepler succeeds in its mission to find a truly Earth-sized planet in a habitable orbit around a distant sun, the discovery could change our conception of our own place in the cosmos forever.

History will tell if Kepler is really one of the greats. For now, here's a subjective list of ten NASA missions that have already earned their spot in the space mission hall of fame.

And if you don't like our choices, you can weigh in with your own opinion in NASA's "Mission Madness" tournament. Starting March 9, NASA will host online voting matches that narrow down to a final contest deciding which of 64 historic missions will take home the title "greatest."

10. Pioneer
Pioneer 10 and Pioneer 11, launched in 1972 and 1973, respectively, were the first spacecraft to visit the solar system's most photogenic gas giants, Jupiter and Saturn. Pioneer 10 was the first probe to travel through the solar system's asteroid belt, a field of orbiting rocks between Mars and Jupiter. Then about a year-and-a-half after its launch, the spacecraft made the first flyby of the planet Jupiter. It took stunning up-close photos of the Great Red Spot and the wide swaths of red that band the planet. About a year later, Pioneer 11 flew by Jupiter, and then moved on to Saturn, where it discovered a couple of previously unknown small moons around the planet, and a new ring. Both probes have stopped sending data, and are continuing out on their one-way voyages beyond the solar system.

9. Voyager
Shortly after the Pioneers made their flybys, the Voyager 1 and Voyager 2 probes followed. They made many important discoveries about Jupiter and Saturn, including rings around Jupiter and the presence of volcanism on Jupiter's moon, Io. Voyager went on to make the first flybys of Uranus, where it discovered 10 new moons, and Neptune, where it found that Neptune actually weighs less than astronomers thought. Both Voyager crafts have enough power to keep transmitting radio signals until at least 2025, and are now exploring the very edge of the solar system and beginning of interstellar space. Voyager 2 is currently the farthest man-made object from Earth, at more than a hundred times the distance from the Earth to the sun, and more than twice as far as Pluto.

8. WMAP
The Wilkinson Microwave Anisotropy Probe (WMAP), launched in 2001, may not be as well-known, but it measures with unprecedented accuracy the temperature of the radiation left over from the Big Bang. By mapping out the fluctuations in the so-called cosmic microwave background radiation, the spacecraft has heralded a leap forward in cosmological theories about the nature and origin of the universe. Among other revelations, the data from WMAP revealed a much more precise estimate for the age of the universe — 13.7 billion years — and confirmed that about 95 percent of it is composed of poorly understood things called dark matter and dark energy.

7. Spitzer
Another spacecraft with a profound effect on cosmology and astrophysics is the Spitzer Space Telescope, which observed the heavens through infrared light. This light, which has a longer wavelength than visual light, is mostly blocked by Earth's atmosphere. In addition to taking gorgeous photos of galaxies, nebulae and stars, the telescope has made numerous groundbreaking scientific discoveries. In 2005 Spitzer became the first telescope to detect light from extrasolar planets (most of these distant worlds are detected only through secondary, gravitational effects on their suns). In another observation, astronomers think the telescope may have even captured light from some of the first stars born in the universe.

6. Spirit & Opportunity
Intended for just a 90-day mission, these workhorse Mars rovers have far outdone themselves, and are still chugging away on the red planet more than five years after landing. Spirit and Opportunity, the twin Mars Exploration Rovers, landed on opposite sides of the planet in January 2004. Since then, they have been traveling all over the surface, poking into craters and roving over unexplored hills. Among their major finds is evidence that the surface of Mars once had liquid water. (A tip of the hat to Sojourner rover, which brought full-color close-ups of Mars in 1997, just as the Internet was becoming wildly popular, thereby earning a special place in the hearts of millions who enjoyed unprecedented access to NASA mission photos.)

5. Cassini-Huygens
This joint NASA/ESA spacecraft, launched in 1997, reached its destination, Saturn, in 2004. Since then it has been in orbit around the ringed world, taking one stunning snapshot after another of the planets rings, moons and weather. The Hugyens probe separated from Cassini and made a special trip to the moon Titan, where it descended through the atmosphere and landed on solid ground in 2005. Though previous spacecraft have visited Saturn, Cassini is the first to orbit it and study the system in detail.

4. Chandra
Since 1999, the Chandra X-ray Observatory has been scanning the skies in X-ray light, looking at some of the most distant and bizarre astronomical events. Because Earth's pesky atmosphere blocks out most X-rays, astronomers couldn't view the universe in this high-energy, short-wavelength light until they sent Chandra up to space. The observatory has such high-resolution mirrors, it can see X-ray sources 100 times fainter than any previous X-ray telescope. Among other firsts, Chandra showed scientists the first glimpse of the crushed star left over after a supernova when it observed the remnant Cassiopeia A.

3. Viking
When NASA's Viking 1 probe touched-down on Mars in July 1976, it was the first time a man-made object had soft-landed on the red planet. (Though the Soviet Mars 2 and 3 probes did land on the surface, they failed upon landing). The Viking 1 lander also holds the title of longest-running Mars surface mission, with a total duration of 6 years and 116 days. The spacecraft also sent the first color pictures back from the Martian surface, showing us what that mysterious red dot looks like from the ground for the first time.

2. Hubble
The most-loved of all NASA spacecraft, the Hubble Space Telescope has name recognition around the world. Its photos have changed the way everyday people figure themselves into the cosmos. The observatory has also radically changed science, making breakthroughs on astronomical issues too numerous to count. By finally sending up an optical telescope to peer at the sky from beyond Earth's turbulent atmosphere, NASA developed a tool that could reveal stars, planets, nebulae and galaxies in all their fully-detailed glory.

1. Apollo
NASA's best space science mission? The one humans got to tag along on, of course! Not only was sending a man to the moon monumental for human history, but the Apollo trips were the first to bring celestial stuff back to Earth and greatly advanced our scientific understanding of the moon. Before Apollo, many people weren't even convinced the moon wasn't made out of cheese (well... non-scientists at least). By studying the moon up close and personal, and then carting  loads of moon rocks home, the Apollo astronauts gathered data that helped us learn how old the moon is, what it's made out of, and even how it might have began.

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