รูปภาพอินสตาแกรมอื่นๆ ของ NASA
As Seen by Rosetta: Comet Surface Variations: This new image of comet 67P/Churyumov-Gerasimenko shows the diversity of surface structures on the comet's nucleus. It was taken by the Rosetta spacecraft's OSIRIS narrow-angle camera on Aug. 7, 2014. At the time, the spacecraft was 65 miles (104 kilometers) away from the 2.5-mile-wide (4-kilometer) nucleus.
In the image, the comet's head (in the top half of the image) exhibits parallel linear features that resemble cliffs, and its neck displays scattered boulders on a relatively smooth, slumping surface. In comparison, the comet's body (lower half of the image) seems to exhibit a multi-variable terrain with peaks and valleys, and both smooth and rough topographic features.
Image Credit: ESA/Rosetta/NAVCAM
#esa #rosetta #space #comet #nasa #cometwatch #67P;
The U.S. Gulf Coast at Night: One of the Expedition 40 crew members aboard the International Space Station photographed this nighttime image showing city lights in at least half a dozen southern states from some 225 miles above the home planet. Lights from areas in the Gulf Coast states of Texas, Louisiana, Mississippi and Alabama, as well as some of the states that border them on the north, are visible.
Image Credit: NASA
#iss #nasa #space #spacestation #exp40 #gulfcoast;
Aboard the International Space Station, NASA astronaut Reid Wiseman caught volcanoes Etna & Stromboli erupting by day & European Space Agency astronaut Alexander Gerst snapped the same shot at night.
Wiseman tweeted his image and wrote, "#Etna and #Stromboli erupting by day. @astro_alex took the exact same shot at night, with lava. #teamwork." And Gerst wrote, "You can see the red glowing lava of 2 volcanoes on this photo! Spot them on @astro_reid's day photo! #teamwork." Image Credit: NASA
#space #iss #nasa #spacestation #exp40 #esa;
A wealth of images of Earth at night taken by astronauts on the International Space Station (ISS) could help save energy, contribute to better human health and safety and improve our understanding of atmospheric chemistry. But scientists need your help to make that happen. The pictures are clear, but their location may not be, which limits their usefulness. That's where citizen science comes in. Visit this link for more information: go.nasa.gov/1nT4OQg
The Iberian Peninsula at night, showing Spain and Portugal. Madrid is the bright spot just above the center.
Image Credit: NASA
#nasa #space #spacestation #iss #science #exp40;
Supernova Explodes! New data from our Chandra X-ray Observatory has provided stringent constraints on the environment around one of the closest supernovas discovered in decades. The Chandra results provide insight into possible cause of the explosion.
On Jan. 21, 2014, astronomers witnessed a supernova soon after it exploded in the Messier 82, or M82, galaxy. Telescopes across the globe and in space turned their attention to study this newly exploded star, including Chandra. Astronomers determined that this supernova, dubbed SN 2014J, belongs to a class of explosions called "Type Ia" supernovas. These supernovas are used as cosmic distance-markers and played a key role in the discovery of the Universe's accelerated expansion, which has been attributed to the effects of dark energy. Scientists think that all Type Ia supernovas involve the detonation of a white dwarf. One important question is whether the fuse on the explosion is lit when the white dwarf pulls too much material from a companion star like the sun, or when two white dwarf stars merge.
This image contains Chandra data, where low, medium, and high-energy X-rays are red, green, and blue respectively.
Image Credit: NASA/CXC/SAO/R.Margutti et al
#nasa #astronomy #space #supernova #chandra #telescope ##science;
Moon from Space: Aboard the International Space Station, astronaut Reid Wiseman snapped this image and posted it to Twitter. He wrote, "I missed the #supermoon but it still looked great setting today!" Image Credit: NASA
#nasa #exp40 #iss #spacestation #space moon #earth;
Tall Boulder Rolls Down Martian Hill, Lands Upright: The track left by an oblong boulder as it tumbled down a slope on Mars runs from upper left to right center of this image. The boulder came to rest in an upright attitude at the downhill end of the track. The HiRISE camera on our Mars Reconnaissance Orbiter recorded this view on July 14, 2014.
Image Credit: NASA/JPL-Caltech/Univ. of Arizona
#nasa #mars #mro #hirise #planets #solarsystem #geology #science;
TONIGHT: The annual Perseid meteor shower peaks! Check the map below for your city/state's visibility. Best Visibility = up to 30-40 meteors/hour; Visible, Low Rates = up to 10 meteors/hour; and Visible, Very Low Rates = less than five meteors/hour. You may see Perseids any time after dark, but peak viewing will be Aug. 13, 3-4 a.m. local time. This is true for all locations in the world.
Image Credit: NASA
#nasa #perseid #meteorshower #meteor #skywatch #space #sky #stargazer #astronomy #stargazing;
Our NuSTAR Mission Sees Rare Blurring of Black Hole Light: The regions around supermassive black holes shine brightly in X-rays. Some of this radiation comes from a surrounding disk, and most comes from the corona, pictured here as the white light at the base of a jet. This is one possible configuration for a corona -- its actual shape is unclear.
Image Credit: NASA/JPL-Caltech
#nasa #blackhole #nustar #science;
Astronaut Reid Wiseman installs Capillary Channel Flow (CCF) experiment hardware in the Microgravity Science Glovebox located in the Destiny laboratory of the International Space Station. CCF is a versatile experiment for studying a critical variety of inertial-capillary dominated flows key to spacecraft systems that cannot be studied on the ground.
Capillary flow is the natural wicking of fluid between narrow channels in the opposite direction of gravity. Tree roots are one example of a capillary system, drawing water up from the soil. By increasing understanding of capillary flow in the absence of gravity, the CCF experiment helps scientists find new ways to move liquids in space. Capillary systems do not require pumps or moving parts, which reduces their cost, weight and complexity.
Image Credit: NASA
#nasa #space #spacestation #iss #exp40 #science;
Astronaut Reid Wiseman aboard the International Space station tweeted this image and wrote, "Florida and Cuba under the #supermoon this past Saturday morning." The six-member Expedition 40 crew is conducting its normal suite of international science and maintenance while waiting for Europe's Automated Transfer Vehicle-5 (ATV-5) to dock Tuesday at 9:30 a.m. EDT.
Image Credit: NASA
#moon #space #iss #spacestation #nasa #earth;
It's a supermoon! A perigree full moon or "supermoon" is seen, Sunday, Aug. 10, 2014, in Washington. A supermoon occurs when the moon's orbit is closest (perigee) to Earth at the same time it is full.
Image Credit: NASA/Bill Ingalls
#supermoon #nasa #space #moon #washington;
Tonight's full moon will appear larger and brighter than any other full moon this year. This #supermoon will be visible everywhere in the world. August's full moon rises when the natural satellite is at perigee - the closest point to Earth in its orbit.
Image Credit: NASA
#moon #supermoon #nasa #space;
Our NEOWISE mission detected comet C/2013 A1 Siding Spring on July 28, 2014, less than three months before this comet's close flyby of Mars on Oct. 19. NEOWISE took multiple images of the comet, combined here so that the comet is seen in four different positions relative to the background stars. The image also includes, near the upper right corner, a view of radio galaxy Fornax A (NGC1316). The observations help constrain estimates of dust and gas production as this comet from the outer solar system approaches Mars.
NGC1316 has an active nucleus, as evidenced by a radio jet and a compact nuclear gas disk. It is thought to be the remnant of a merger between a large elliptical galaxy and a smaller spiral galaxy about 100 million years ago.
Image credit: NASA/JPL-Caltech
#nasa #space #comet #science;
Aboard the International Space Station, Expedition 40 crew member Reid Wiseman posted this image and wrote, "Passing over India just now. Undoctored...unedited...unbelievable." Over the weekend, the station's astronauts and cosmonauts will take care of weekly housekeeping chores as they wipe down surfaces and vacuum dust. They also will continue their daily 2.5-hour workouts to stay fit and to prevent the loss of muscle mass and bone density that occurs in microgravity.
Image Credit: NASA
#nasa #spacestation #station #iss #exp40;
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