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Comet LoveJoy! Discovered in August of 2014, Comet Lovejoy is currently sweeping north through the constellation Taurus, bright enough to offer good binocular views. Glowing softly with a greenish hue, Comet Lovejoy passed closest to planet Earth on January 7, while its perihelion (closest point to the Sun) will be on January 30. Classed as a long period comet, it should return again ... in about 8,000 years. Image of Comet Lovejoy taken Saturday, January 10, by Dr. Bill Cooke. Image is a 3 minute exposure using the iTelescope T3 refractor. At the time of this image, the comet was some 45 million miles from Earth. Image credit: NASA/MSFC/B. Cooke, Meteoroid Environment Office #comet #nasa #lovejoy #cometlovejoy #space #earth #science; -
Scientists Pinpoint Saturn With Exquisite Accuracy: Scientists have paired NASA's Cassini spacecraft with the National Science Foundation's Very Long Baseline Array (VLBA) radio-telescope system to pinpoint the position of Saturn and its family of moons to within about 2 miles (4 kilometers). The measurement is some 50 times more precise than those provided by ground-based optical telescopes. The feat improves astronomers' knowledge of Saturn's orbit and benefits spacecraft navigation and basic physics research. Image Credit: NASA/JPL/Space Science Institute #nasa #science #cassini #nsf #vlba #saturn #planets; -
And Liftoff! Another great shot of the SpaceX Falcon 9 rocket as it lifts off from Space Launch Complex 40 at Cape Canaveral Air Force Station carrying the Dragon resupply spacecraft to the International Space Station. Liftoff was at 4:47 a.m. EST on Saturday, Jan. 10, 2015. The commercial resupply mission will deliver 3,700 pounds of scientific experiments, technology demonstrations and supplies, including critical materials to support 256 science and research investigations on the space station. Image Credit: NASA/Jim Grossman #nasa #spacex #launch #exp42 #iss #isscargo #science #spacestation; -
The SpaceX Falcon 9 lifted off at 4:47 a.m. EST and is en route to the International Space Station. Dragon's solar arrays have deployed and will provide 5 kilowatts of power to the spacecraft as it begins a carefully choreographed series of thruster firings to reach the station. At the time of launch, the International Space Station was orbiting 261 miles over the middle of the Indian Ocean. The spacecraft is carrying more than 2 tons of supplies, science experiments and technology demonstrations, including critical materials to support 256 science and research investigations that will occur during Expeditions 42 and 43 and the Cloud-Aerosol Transport System (CATS). At 6:12 a.m. on Monday, Jan. 12, the Dragon spacecraft will catch up to the orbiting laboratory, and Expedition 42 Commander Barry "Butch" Wilmore of NASA will use the station's 57.7-foot robotic arm to reach out and capture it. Flight Engineer Samantha Cristoforetti of the European Space Agency will support Wilmore as they operate from the station's cupola. Image credit: NASA; -
Twas the night before launch, and the SpaceX Falcon 9 rocket and Dragon spacecraft were prepared to liftoff to the International Space Station to deliver cargo that will be sent aloft on the resupply flight. Launch of the SpaceXCRS-5 mission is scheduled for 4:47 a.m. EST today from Florida. Live NASA TV coverage starts at 3:30 a.m. To watch, visit: http://www.nasa.gov/nasatv Image credit: SpaceX #ISScargo;
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Fired Up! The new year is off to a hot start for our Space Launch System (SLS). The engine that will drive America's next great rocket to deep space blazed through its first successful test Jan. 9 at the agency's Stennis Space Center (@nasastennis ) St. Louis, Mississippi. The RS-25, formerly the space shuttle main engine, fired up for 500 seconds on the A-1 test stand at Stennis, providing our engineers critical data on the engine controller unit and inlet pressure conditions. This is the first hot fire of an RS-25 engine since the end of space shuttle main engine testing in 2009. Four RS-25 engines will power SLS on future missions, including to an asteroid and Mars. Image Credit: NASA #nasa #enginetest #test #journeytomars #stennis #asteroid #mars @; -
New woven composite materials are an advanced space technology that mark a major milestone toward development of the space systems that will enable extending human and robotic presence throughout the solar system. Today, our Administrator Charles Bolden and Space Technology Mission Directorate Associate Administrator Michael Gazarik toured the Bally Ribbon Mills facility in Bally, Pa. to get a first-hand look at the manufacturer's high-performance multidimensional (3D) woven materials. The company is weaving the multifunctional thermal protection system padding used to insulate and protect our Orion spacecraft. Orion, which recently completed its first flight test, will carry astronauts to Mars and return them safely to Earth with the help of this technology. The next test of this thermal protection technology will be on Orion on Exploration Mission-1 in 2017. Video and Image credit: Bally Ribbon Mills/ NASA JPL #nasa #321techoff #journeytomars #orion #nasatech #technology; -
Coloring the Sea Around the Pribilof Islands The Operational Land Imager (OLI) on Landsat 8 captured this view of a phytoplankton bloom near Alaska’s Pribilof Islands on Sept. 22, 2014. The Pribilofs are surrounded by nutrient-rich waters in the Bering Sea. The milky green and light blue shading of the water indicates the presence of vast populations of microscopic phytoplankton—mostly coccolithophores, which have calcite scales that appear white in satellite images. Such phytoplankton form the foundation of a tremendously productive habitat for fish and birds. Blooms in the Bering Sea increase significantly in springtime, after winter ice cover retreats and nutrients and freshened water are abundant near the ocean surface. Phytoplankton populations plummet in summertime as the water warms, surface nutrients are depleted by blooms, and the plant-like organisms are depleted by grazing fish, zooplankton, and other marine life. By autumn, storms can stir nutrients back to the surface and cooler waters make better bloom conditions. Image Credit: NASA/Landsat 8; -
Astronomers are enlisting the help of machines to sort through thousands of stars in our galaxy and learn their sizes, compositions and other basic traits. The research is part of the growing field of machine learning, in which computers learn from large data sets, finding patterns that humans might not otherwise see. Machine learning is in everything from media-streaming services that predict what you want to watch, to the post office, where computers automatically read handwritten addresses and direct mail to the correct zip codes. Image Credit: NASA/JPL-Caltech #nasa #aas225 #space #galaxy #spitzer #machinelearning #astronomy #science; -
Will the Real Monster Black Hole Please Stand Up? A new high-energy X-ray image from NASA's Nuclear Spectroscopic Telescope Array, or NuSTAR, has pinpointed the true monster of a galactic mashup. The image shows two colliding galaxies, collectively called Arp 299, located 134 million light-years away. Each of the galaxies has a supermassive black hole at its heart. NuSTAR has revealed that the black hole located at the right of the pair is actively gorging on gas, while its partner is either dormant or hidden under gas and dust. The findings are helping researchers understand how the merging of galaxies can trigger black holes to start feeding, an important step in the evolution of galaxies. Image Credit: NASA/JPL-Caltech/GSFC #nasa #aas225 #space #nustar #blackhole #astronomy #galaxy #science;
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Satellite Picture Shows Snow-covered U.S. Deep Freeze NOAA's GOES-East satellite provided a look at the frigid eastern two-thirds of the U.S. on Jan. 7, 2015, that shows a blanket of northern snow, lake-effect snow from the Great Lakes and clouds behind the Arctic cold front. A visible picture captured at 11 a.m. EST showed the effects of the latest Arctic outbreak. The cold front that brought the Arctic air moved as far south as Florida, and stretched back over the Gulf of Mexico and just west of Texas. The image shows clouds behind the frontal boundary stretching from the Carolinas west over the Heartland. Farther north, a wide band of fallen snow covers the ground from New England west to Montana, with rivers appearing like veins. The GOES-East satellite image also shows wind-whipped lake-effect snows off the Great Lakes, blowing to the southeast. Meanwhile, Florida, the nation's warm spot appeared almost cloud-free. Image Credit: NASA/NOAA GOES Project; -
Eta Carinae, the most luminous and massive stellar system within 10,000 light-years of Earth, is known for its surprising behavior, erupting twice in the 19th century for reasons scientists still don't understand. A long-term study led by @nasagoddard astronomers used NASA satellites, ground-based telescopes and theoretical modeling to produce the most comprehensive picture of Eta Carinae to date. New findings include Hubble Space Telescope images that show decade-old shells of ionized gas racing away from the largest star at a million miles an hour, and new 3-D models that reveal never-before-seen features of the stars' interactions. Eta Carinae's great eruption in the 1840s created the billowing Homunculus Nebula, imaged here by Hubble. Now about a light-year long, the expanding cloud contains enough material to make at least 10 copies of our sun. Astronomers cannot yet explain what caused this eruption. Image Credit: NASA, ESA, and the Hubble SM4 ERO Team #nasa #space #hst #hubble #hubble25 #aas225 #astronomy #astrophysics #science; -
Record-Breaking Outburst from Milky Way's Black Hole: Astronomers have observed the largest X-ray flare ever detected from the supermassive black hole at the center of the Milky Way galaxy. This event, detected by NASA's Chandra X-ray Observatory, raises questions about the behavior of this giant black hole and its surrounding environment. The supermassive black hole at the center of our galaxy, called Sagittarius A*, or Sgr A*, is estimated to contain about 4.5 million times the mass of our sun. Image Credit: NASA/CXC/Stanford/I. Zhuravleva et al. #nasa #space #blackhole #chandra #milkyway #astronomy #xray #aas225 #science; -
Iconic Hubble Space Telescope 'Pillars of Creation' image, taken in near-infrared light, transforms the pillars into eerie, wispy silhouettes, which are seen against a background of myriad stars. The near-infrared light can penetrate much of the gas and dust, revealing stars behind the nebula as well as hidden away inside the pillars. Some of the gas and dust clouds are so dense that even the near-infrared light cannot penetrate them. New stars embedded in the tops of the pillars, however, are apparent as bright sources that are unseen in the visible image. Credit: NASA, ESA, and the Hubble Heritage Team (STScI/AURA) #nasa #hubble #hubble25 #hst #space #astronomy #aas225 #telescope #science; -
Hubble’s High-Definition Panoramic View of the Andromeda Galaxy: This sweeping bird's-eye view of a portion of the Andromeda galaxy (M31) is the sharpest image ever taken of our galactic next-door neighbor. This ambitious photographic cartography of the Andromeda galaxy represents a new benchmark for precision studies of large spiral galaxies that dominate the universe's population of over 100 billion galaxies. Never before have astronomers been able to see individual stars inside an external spiral galaxy over such a large contiguous area. Most of the stars in the universe live inside such majestic star cities, and this is the first data that reveal populations of stars in context to their home galaxy. Image credit: NASA, ESA, J. Dalcanton, B.F. Williams, and L.C. Johnson (University of Washington), the PHAT team, and R. Gendler #nasa #hubble #hst #space #hubble25 #aas225 #galaxy #telescope #science;
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