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Spacewalkers Remove Degraded Ammonia Pump - Expedition 38 Flight Engineers Rick Mastracchio and Mike Hopkins wrapped up a 5-hour, 28 minute spacewalk outside the International Space Station at 12:29 p.m. EST today, completing the first in a series of excursions aimed at replacing a degraded ammonia pump module associated with one of the station's two external cooling loops that keeps both internal and external equipment cool. The two astronauts focused on removing a degraded pump module from Loop A of the station’s external Active Thermal Control System. That pump module encountered a problem Dec. 11 when an internal valve stuck in an incorrect position, causing temperatures in the station’s cooling lines to drop. On Monday, Mastracchio and Hopkins will venture outside the station again to begin the installation of a replacement pump module. If necessary a third spacewalk would occur on Christmas day to finalize the installation. In this image, Mastracchio holds the degraded pump module while the space station's robotic arm guides the module to a grapple fixture. Image Credit: NASA TV #nasa #space #iss #spacewalk #exp38 #eva #astronauts; -
Astronauts Prepare for Spacewalks - Expedition 38 crew member Mike Hopkins checks out the spacesuit he will wear outside the International Space Station on Saturday, Dec. 21, 2013. He and fellow astronaut Rick Mastracchio will conduct a series of spacewalks to replace an ammonia pump that is part of the station's coolant system. This will be Hopkins' first spacewalk, while Mastracchio has had six previous ones on STS-118 and STS-131. CREDIT: NASA #nasa #space #iss #astronauts #spacestation #exploration #station #eva #spacewalk; -
Across the Universe? No, planet Mercury! Beatles legend John Lennon among those honored with Mercury craters. It’s unlikely that Mercury’s surface is populated with tangerine trees and marmalade skies, but the famous British musician who coined that phrase now has a physical presence on the planet closest to the Sun. The International Astronomical Union (IAU) has named an impact crater on the planet after John Lennon, the British pop music sensation who helped make The Beatles the most popular group of their generation. This image is of the Lennon crater, as seen from NASA's MESSENGER spacecraft. Image Credit: NASA/Johns Hopkins Applied Physics Lab/Carnegie Institution #nasa #space #beatles #johnlennon #mercury #solarsystem #planets #iau #messenger #sun; -
Our Asteroid Hunter Spacecraft Returns First Images after Reactivation - NASA’s NEOWISE spacecraft opened its "eyes" after more than two years of slumber to see the starry sky. This image of a patch of sky in the constellation Pisces is among the first taken by the spacecraft’s infrared cameras. NASA's Near-Earth Object Wide-field Infrared Survey Explorer (NEOWISE), a spacecraft that made the most comprehensive survey to date of asteroids and comets, has returned its first set of test images in preparation for a renewed mission. NEOWISE discovered more than 34,000 asteroids and characterized 158,000 throughout the solar system during its prime mission in 2010 and early 2011. It was reactivated in September following 31 months in hibernation, to assist NASA's efforts to identify the population of potentially hazardous near-Earth objects (NEOs). NEOWISE also can assist in characterizing previously detected asteroids that could be considered potential targets for future exploration missions. Image Credit: NASA/JPL-Caltech #nasa #astrophysics #space #exploration #asteroids #neowise #pisces #comet; -
A bright fireball event occurred on Dec. 17 at 9:20:40 PM EST. It started out 52 miles above I-24 just south of Manchester, TN, and moved to the northwest at 50,000 mph. The all sky camera lost track of it at an altitude of 23 miles just to the northwest of Shelbyville. The closest camera (Tullahoma, TN) shows that the fireball was about as bright as the full moon, which means we are dealing with an object about 20 inches across and weighing approximately 400 lbs. Orbit indicates this object is a piece of an asteroid, with an aphelion in the main asteroid belt between Mars and Jupiter, and perihelion (closest point to the sun) inside the orbit of Venus. CREDIT: NASA #nasa #space #fireball #asteroid #skycamera;
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Our Deep Space Network, the original 'wireless network' turns 50 next week! Late night in the desert: Goldstone's 230-foot (70-meter) antenna tracks spacecraft day and night. This photograph was taken on Jan. 11, 2012. The Goldstone Deep Space Communications Complex, located in the Mojave Desert in California, is one of three complexes that comprise NASA's Deep Space Network (DSN). The DSN provides radio communications for all of NASA's interplanetary spacecraft and is also utilized for radio astronomy and radar observations of the solar system and the universe. DSN, the world's largest and most powerful communications system for "talking to" spacecraft, will reach a milestone on Dec. 24: the 50th anniversary of its official creation. Image Credit: NASA/JPL-Caltech #nasa #space #dsn #goldstone #antenna #spacecraft #iss #mojave #desert; -
Some beauty is revealed only at a second glance. When viewed with the human eye, the giant asteroid Vesta, which was the object of scrutiny by the Dawn spacecraft from 2011 to 2012, is quite unspectacular color-wise. Vesta looks grayish, pitted by a variety of large and small craters. But scientists at the Max Planck Institute for Solar System Research in Katlenburg-Lindau, Germany, have re-analyzed the images of this giant asteroid obtained by Dawn's framing camera. They assigned colors to different wavelengths of light and, in the process, revealed in unprecedented detail not only geological structures that are invisible to the naked eye, but also landscapes of incomparable beauty. Dawn visited Vesta from July 2011 to September 2012. The spacecraft is currently on its way to its second destination, the dwarf planet Ceres. Ceres is the largest object in the main asteroid belt between Mars and Jupiter. This colorful composite image shows the flow of material inside and outside a crater called Aelia on asteroid Vesta. Image Credit: NASA/JPL-Caltech/UCLAMPS/DLR/IDA #nasa #dawn #vesta #space #asteroid #spacecraft #solarsystem #science #color; -
A Rainbow of Wavelengths - This still image is based on data from NASA's Solar Dynamics Observatory, or SDO, showing the wide range of the sun’s wavelengths – invisible to the naked eye – that the telescope can view. SDO converts the wavelengths into an image humans can see, and the light is colorized into a rainbow of colors. Yellow light of 5800 Angstroms, for example, generally emanates from material of about 10,000 degrees F (5700 degrees C), which represents the surface of the sun. Extreme ultraviolet light of 94 Angstroms, which is typically colorized in green in SDO images, comes from atoms that are about 11 million degrees F (6,300,000 degrees C) and is a good wavelength for looking at solar flares, which can reach such high temperatures. By examining pictures of the sun in a variety of wavelengths scientists can track how particles and heat move through the sun's atmosphere. Image Credit: NASA Goddard Space Flight Center #solar #sdo #nasa #space #sunpix #sun; -
Pfeiffer Fire near Big Sur, California - The MODIS or Moderate Resolution Imaging Spectroradiometer instrument that flies aboard NASA's Aqua satellite captured an image of smoke and detected the heat from the Pfeiffer Fire near Big Sur, Calif., on Dec. 16 at 21:05 UTC/4:05 p.m. EST. The red outlined area represents the heat from the fire. According to Reuters News, the fire has destroyed at least 15 homes and caused many residential evacuations. The Incident Information System called Inciweb, the U.S. multi-agency firefighting website, reported that the wildfire started around midnight Pacific Standard local time on Dec. 16 in the vicinity of Pfeiffer Ridge in the Monterey Ranger District of Los Padres National Forest. It is in an area of rugged terrain and has already consumed over 500 acres. As of Dec. 17, the fire was zero percent contained. Image: NASA Goddard MODIS Rapid Response Team, Caption: NASA Goddard, Rob Gutro #nasa #space #weather #modis #bigsur #aqua #satellite #climate #wildfire #fire; -
Just in time for the holidays, a festive Hubble Space Telescope image that resembles a holiday wreath made of sparkling lights! The bright southern hemisphere star RS Puppis, at the center of the image, is swaddled in a gossamer cocoon of reflective dust illuminated by the glittering star. The super star is ten times more massive than our sun and 200 times larger. RS Puppis rhythmically brightens and dims over a six-week cycle. It is one of the most luminous in the class of so-called Cepheid variable stars. Its average intrinsic brightness is 15,000 times greater than our sun’s luminosity. The nebula flickers in brightness as pulses of light from the Cepheid propagate outwards. Hubble took a series of photos of light flashes rippling across the nebula in a phenomenon known as a "light echo." Even though light travels through space fast enough to span the gap between Earth and the moon in a little over a second, the nebula is so large that reflected light can actually be photographed traversing the nebula. Image Credit: NASA/ESA/Hubble Heritage (STScI/AURA)-Hubble/Europe Collab. #nasa #space #hubble #galaxy #hst #universe #esa #nebula #earth #light #science #astronomy;
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An Orbital Science Corporation Antares rocket is seen as it is rolled out to launch Pad-0A at NASA's Wallops Flight Facility Tuesday, Dec. 16, 2013, in advance of a Thursday launch, Wallops Island, VA. The Antares will launch a Cygnus spacecraft on a cargo resupply mission to the International Space Station. The Orbital-1 mission is Orbital Sciences' first contracted cargo delivery flight to the space station for NASA. Among the cargo aboard Cygnus set to launch to the space station are science experiments, crew provisions, spare parts and other hardware. Launch is scheduled for 9:19 p.m. EST on Thursday, Dec. 19. Weather permitting, it may be widely visible along the east coast of the United States. Photo Credit: (NASA/Bill Ingalls) #nasa #space #launch #rocketlaunch #iss #orbitalsciences #cygnus #orb1 #antares; -
NASA's Hubble Looks at a Members-only Galaxy Club - This new Hubble image shows galaxies in the constellation of Eridanus (The River). NGC 1190 stands apart from the rest; it belongs to an exclusive club known as Hickson Compact Group 22 (HCG 22). Hickson Compact Groups are incredibly tightly bound groups of galaxies. Their discoverer Paul Hickson observed only 100 of these objects, which he described in his HCG catalog in the 1980s. To earn the Hickson Compact Group label, there must be at least four members — each one fairly bright and compact. These short-lived groups are thought to end their lives as giant elliptical galaxies, but despite knowing much about their form and destiny, the role of compact galaxy groups in galactic formation and evolution is still unclear. These groups are interesting partly for their self-destructive tendencies. The group members interact, circling and pulling at one another until they eventually merge together, signaling the death of the group, and the birth of a large galaxy. CREDIT: European Space Agency #nasa #hubble #space #astronomy #galaxy #stars #milkyway #hst #universe; -
Spotlight on Webb Telescope Test - Dressed in a clean room suit, NASA photographer Desiree Stover shines a light on the Space Environment Simulator's Integration Frame inside the thermal vacuum chamber at NASA's Goddard Space Flight Center in Greenbelt, Md. Shortly after, the chamber was closed up and engineers used this frame to enclose and help cryogenic (cold) test the heart of the James Webb Space Telescope, the Integrated Science Instrument Module. The James Webb Space Telescope (sometimes called JWST) is a large, infrared-optimized space telescope. The project is working to a 2018 launch date. Webb will find the first galaxies that formed in the early Universe, connecting the Big Bang to our own Milky Way Galaxy. Webb will peer through dusty clouds to see stars forming planetary systems, connecting the Milky Way to our own Solar System. Webb's instruments will be designed to work primarily in the infrared range of the electromagnetic spectrum, with some capability in the visible range. CREDIT: NASA #nasa #space #webbtelescope #infrared #jwst #universe #telescope #galaxy #planets; -
Backdropped by Earth’s horizon and the blackness of space, the International Space Station is featured in this image photographed by an STS-131 crew member on space shuttle Discovery after the station and shuttle began their post-undocking relative separation. Undocking of the two spacecraft occurred at 8:52 a.m. (EDT) on April 17, 2010. The station’s Expedition 38 mission began Nov. 11, 2013, and will end March 12, 2014. This expedition includes research projects focusing on technology demonstration, cellular and plant biology, human health management for long duration space travel and maturing critical systems that currently support the station. CREDIT: NASA #nasa #iss #space #astronauts #exploration #station #earth #spaceshuttle #discovery; -
We are currently reviewing possible repair spacewalks aboard the International Space Station. NASA engineers continued efforts Sunday to regulate temperatures in one of two cooling loops on the space station affected by the malfunction last week of a flow control valve in a cooling pump on the station’s starboard truss. A Flow Control Valve in the starboard Pump Module that enables the flow of ammonia to cool station systems stopped positioning itself properly last Wednesday, resulting in a drop of temperature in Cooling Loop A. That necessitated the shutdown of some support systems on the station. The temperature must be warm enough in the cooling lines to allow the system’s heat exchangers to dissipate excess heat from the station through the external radiators on the complex. The primary heat rejection capability for station systems shifted last week to Cooling Loop B that uses a fully operational Pump Module on the port truss. Meanwhile, aboard the space station, astronauts Rick Mastracchio and Mike Hopkins continued to prepare their spacesuits and other equipment in the Quest airlock Sunday should they be called upon to conduct spacewalks to replace the Pump Module. In this image, Flight Engineer Doug Wheelock worked outside the International Space Station in August 2010 to install a spare pump module. CREDIT: NASA #nasa #space #iss #spacewalk #cygnus #orb1 #antares #exploration #repair #eva #exp38 #astronauts;
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