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Saturn's moon Dione appears cut in two by Saturn's razor-thin rings, seen nearly edge-on in a view from our Cassini spacecraft. The bright streaks of Dione's wispy terrain are seen near the moon's limb at right. The medium-sized crater Turnus (63 miles, 101 kilometers, wide) is visible along Dione's terminator. The view was acquired at a distance of approximately 1.4 million miles (2.3 million kilometers) from Dione and at a Sun-Dione-spacecraft, or phase, angle of 115 degrees. Image scale is 8.6 miles (13.8 kilometers) per pixel. Image Credit: NASA/JPL-Caltech/Space Science Institute #nasa #cassini #saturn #dione #solarsystem #astronomy #nasabeyond #science; -
"Beautiful #Earth. Beautiful #Africa," wrote NASA astronaut Scott Kelly (@StationCDRKelly) when posting this image. Astronauts aboard the International Space Station (@ISS) capture photographs and video of the routinely. Kelly shared this stunning image on Thursday, Feb, 11. The station is a unique place - a convergence of science, technology and human innovation that demonstrates new technologies and makes research breakthroughs not possible on Earth. It is a microgravity laboratory in which an international crew of six people live and work while traveling at a speed of 17,500 mph, orbiting Earth every 90 minutes. Image Credit: NASA #nasa #space #iss #spacestation #yearinspace #earth; -
Forget the florist. Give your special someone a 'rose' made of galaxies! The larger of the spiral galaxies has a disk that is tidally distorted into a rose-like shape by the gravitational tidal pull of the companion galaxy below it. A swath of blue jewels across the top is the combined light from clusters of intensely bright and hot young blue stars. These massive stars glow fiercely in ultraviolet light. The smaller, nearly edge-on companion shows distinct signs of intense star formation at its nucleus, perhaps triggered by the encounter with the companion galaxy. Image Credit: NASA, ESA, and the Hubble Heritage Team (STScI/AURA) #nasa #hubble #space #hst #galaxy #valentinesday #happyvalentinesday #valentines #nasaebyond #science; -
Celestial Valentine! Generations of stars can be seen in this infrared portrait from our Spitzer Space Telescope. In this wispy star-forming region, called W5, the oldest stars can be seen as blue dots in the centers of the two hollow cavities (other blue dots are background and foreground stars not associated with the region). Younger stars line the rims of the cavities, and some can be seen as pink dots at the tips of the elephant-trunk-like pillars. The white knotty areas are where the youngest stars are forming. Red shows heated dust that pervades the region's cavities, while green highlights dense clouds. Image Credit: NASA/JPL-Caltech/Harvard-Smithsonian #nasa #space #happyvalentinesday #whpthisislove #nasabeyond #astronomy #science #valentines; -
Icy Blue Wings of Hen 2-437: In this cosmic snapshot, the spectacularly symmetrical wings of Hen 2-437 show up in a magnificent icy blue hue. Hen 2-437 is a planetary nebula, one of around 3,000 such objects known to reside within the Milky Way. Planetary nebulae such as Hen 2-437 form when an aging low-mass star - such as the sun - reaches the final stages of life. The star swells to become a red giant, before casting off its gaseous outer layers into space. The star itself then slowly shrinks to form a white dwarf, while the expelled gas is slowly compressed and pushed outwards by stellar winds. As shown by its remarkably beautiful appearance, Hen 2-437 is a bipolar nebula - the material ejected by the dying star has streamed out into space to create the two icy blue lobes pictured here. Image credit: ESA (European Space Agency)/Hubble & NASA, Acknowledgement: Judy Schmidt #nasa #space #astronomy #hubble #hst #telescope #nebula #nasabeyond #science;
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The sun is always changing and our Solar Dynamics Observatory is always watching. SDO keeps a 24-hour eye on the entire disk of the sun, with a prime view of the graceful dance of solar material coursing through the sun's atmosphere, the corona. SDO's sixth year in orbit was no exception. This video shows a clip of the sixth year, as one time-lapse sequence. Each frame represents 2 hours. Scientists study these images to better understand the complex electromagnetic system causing the constant movement on the sun, which can ultimately have an effect closer to Earth, too: Flares and another type of solar explosion called coronal mass ejections can sometimes disrupt technology in space. Moreover, studying our closest star is one way of learning about other stars in the galaxy. Credit: NASA's Goddard Space Flight Center/Wiessinger Music: "Tides," a track available from Killer Tracks #nasa #sun #sdo #astronomy #solarflare #space #nasabeyond #science; -
[Artist Concept] The National Science Foundation (NSF) has announced the detection of gravitational waves. Albert Einstein predicted the existence of gravitational waves in his general theory of relativity a century ago, and scientists have been attempting to detect them for 50 years. Einstein pictured these waves as ripples in the fabric of space-time produced by massive, accelerating bodies, such as black holes orbiting each other. Scientists are interested in observing and characterizing these waves to learn more about the sources producing them and about gravity itself. An artist's impression of gravitational waves generated by binary neutron stars. Credits: R. Hurt/Caltech-JPL #nasa #Einstein #space #gravity #nasabeyond #science; -
British European Space Agency astronaut Tim Peake (@astro_timpeake) posted this video and wrote, 'Amazing how much lightning can strike our planet in a short time #Principia #timelapse.' Astronauts capture photographs and video of the Earth from the International Space Station (@ISS) routinely. The station is a unique place - a convergence of science, technology and human innovation that demonstrates new technologies and makes research breakthroughs not possible on Earth. It is a microgravity laboratory in which an international crew of six people live and work while traveling at a speed of 17,500 mph, orbiting Earth every 90 minutes. Image Credit: ESA #nasa #esa #iss #space #lightning #spacestation #science #earth; -
Ices and Shadows: Saturn's moon Tethys appears to float between two sets of rings in this view from our Cassini spacecraft, but it's just a trick of geometry. The rings, which are seen nearly edge-on, are the dark bands above Tethys, while their curving shadows paint the planet at the bottom of the image. Tethys (660 miles or 1,062 kilometers across) has a surface composed mostly of water ice, much like Saturn's rings. Water ice dominates the icy surfaces in the the far reaches of our solar system, but ammonia and methane ices also can be found. Image Credit: NASA/JPL-Caltech/Space Science Institute #nasa #space #saturn #cassini #tethys #astronomy #nasabeyond #science; -
Our satellite captured the San Francisco Bay Area, home of Levi's Stadium and Super Bowl 50, from space! Landsat 7 is a U.S. satellite used to acquire remotely sensed images of the Earth's land surface and surrounding coastal regions. It is maintained by the Landsat 7 Project Science Office at the Goddard Space Flight Center (@NASAGoddard) ...Landsat satellites have been acquiring images of the Earth’s land surface since 1972. Currently there are more than 2 million Landsat images in the National Satellite Land Remote Sensing Data Archive. Credit: NASA/GSFC/Landsat 7 #nasa #superbowlsunday #sb50 #superbowl50 #superbowl #space #science #earth #landsat #earthrightnow #supercity;
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Earth is beautiful! NASA astronaut Scott Kelly (@StationCDRKelly) captures photographs and video of the Earth from the International Space Station (@ISS) routinely. On Jan. 25, 2015, Kelly shared this stunning image, writing "Day 304. That's 4,864 orbits around' our beautiful planet #Earth." The station is a unique place - a convergence of science, technology and human innovation that demonstrates new technologies and makes research breakthroughs not possible on Earth. It is a microgravity laboratory in which an international crew of six people live and work while traveling at a speed of 17,500 mph, orbiting Earth every 90 minutes. Image Credit: NASA #nasa #space #iss #spacestation #yearinspace #earth; -
Galactic Merger! This image shows a peculiar galaxy known as NGC 1487, lying about 30 million light-years away. Rather than viewing it as a celestial object, it is actually better to think of this as an event. Here, we are witnessing two or more galaxies in the act of merging together to form a single new galaxy. Each galaxy has lost almost all traces of its original appearance, as stars and gas have been thrown by gravity in an elaborate cosmic whirl. Image credit: ESA/Hubble & NASA #nasa #hubble #space #hst #esa #astronomy #nasabeyond #science; -
Saturn's rings: less than meets the eye? It seems intuitive that an opaque material should contain more stuff than a more translucent substance. For example, muddier water has more suspended particles of dirt in it than clearer water. Likewise, you might think that, in the rings of Saturn, more opaque areas contain a greater concentration of material than places where the rings seem more transparent. But some parts of Saturn's B ring are up to 10 times more opaque than the neighboring A ring, but the B ring may weigh in at only two to three times the A ring's mass. Credits: NASA/JPL-Caltech/Space Science Institute #nasa #saturn #cassini #space #astronomy #nasabeyond #science; -
Blast From Black Hole in a Galaxy Far, Far Away: The Star Wars franchise has featured the fictitious "Death Star," which can shoot powerful beams of radiation across space. The Universe, however, produces phenomena that often surpass what science fiction can conjure. The Pictor A galaxy is one such impressive object. This galaxy, located nearly 500 million light years from Earth, contains a supermassive black hole at its center. A huge amount of gravitational energy is released as material swirls towards the event horizon, the point of no return for infalling material. This energy produces an enormous beam, or jet, of particles traveling at nearly the speed of light into intergalactic space. Credits: X-ray: NASA/CXC/Univ. of Hertfordshire/M. Hardcastle et al.; Radio: CSIRO/ATNF/ATCA #nasa #astronomy #space #galaxy #blackhole #nasabeyond #science; -
Fly Over Dwarf Planet Ceres: A colorful new animation shows a simulated flight over the surface of dwarf planet Ceres, based on images from our Dawn spacecraft. The movie shows Ceres in enhanced color, which helps to highlight subtle differences in the appearance of surface materials. Scientists believe areas with shades of blue contain younger, fresher material, including flows, pits and cracks. This animated flight over Ceres emphasizes the prominent crater Occator and its intriguing bright spots, which are believed to be a type of salt. Credit: NASA #nasa #ceres #space #planet #nasabeyond #dawn #spacecraft #science;
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