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A dying star's final moments are captured in this image from the Hubble Space Telescope. The death throes of this star may only last mere moments on a cosmological timescale, but this star's demise is still quite lengthy by our standards, lasting tens of thousands of years! The star's agony has culminated in a wonderful planetary nebula known as NGC 6565, a cloud of gas that was ejected from the star after strong stellar winds pushed the star's outer layers away into space. Once enough material was ejected, the star's luminous core was exposed, enabling its ultraviolet radiation to excite the surrounding gas to varying degrees and causing it to radiate in an attractive array of colors. These same colors can be seen in the famous and impressive Ring Nebula (heic1310), a prominent example of a nebula like this one. Planetary nebulae are illuminated for around 10,000 years before the central star begins to cool and shrink to become a white dwarf. When this happens, the star's light drastically diminishes and ceases to excite the surrounding gas, so the nebula fades from view. Image credit: ESA/Hubble & NASA #nasa #hst #hubble #hubble25 #astronomy #nebula #star #science; -
In honor of tonight's 'Blue Moon,' astronaut Scott Kelly aboard the International Space Station posted this image and wrote, "TGIF Here's a preview of tonight's rare celestial surprise. #BlueMoon on the rise. #YearInSpace." 'Once in a Blue Moon' typically means rare or absurd. This year, it means tonight! According to modIn honor of tonight's 'Blue Moon, astronaut Scott Kelly aboard the International Space Station posted this image and wrote, "TGIF Here's a preview of tonight's rare celestial surprise. #BlueMoon on the rise. #YearInSpace." 'Once in a Blue Moon' typically means rare or absurd. This year, it means tonight! According to modern folklore, the second full moon in a month is a "Blue Moon." But of course that doesn't necessarily mean it's blue. Step outside at sunset, look east and see what color presents itself. Image Credit: NASA #nasa #iss #spacestation #space #isscrew #NASABeyond #moon #bluemoon #science #TGIF Here's a preview of tonight's rare celestial surprise. #BlueMoon on the rise. #YearInSpace B55F8243-3CE1-4E4F-94D4-BE4CD3849E12ern folklore, the second full moon in a month is a "Blue Moon." But of course that doesn't mean it's necessarily blue. Step outside at sunset, look east and see what color presents itself. Image Credit: NASA #nasa #iss #spacestation #space #isscrew #NASABeyond #moon #bluemoon #science #TGIF Here's a preview of tonight's rare celestial surprise. #BlueMoon on the rise. #YearInSpace; -
Using NASA's Spitzer Space Telescope, astronomers have confirmed the discovery of the nearest rocky planet outside our solar system, larger than Earth and a potential gold mine of science data. Dubbed HD 219134b, this exoplanet, which orbits too close to its star to sustain life, is a mere 21 light-years away. While the planet itself can't be seen directly, even by telescopes, the star it orbits is visible to the naked eye in dark skies in the Cassiopeia constellation, near the North Star. HD 219134b is also the closest exoplanet to Earth to be detected transiting, or crossing in front of, its star and, therefore, perfect for extensive research. This artist's concept video shows the silhouette of the rocky planet crossing, or transiting, its star. Video Credits: NASA/JPL-Caltech; -
We dropped a Cessna 172 from 100 feet today. With a thunderous rattle, the aircraft plowed into the soil as its windshield shattered, its wings wrenched off and its fuselage flipped -- tail over nose -- onto its back. Researchers were pleased. The controlled experiment that will help us improve aviation emergency response times. We’re developing next-gen search and rescue technology as part of an international effort involving members from 43 countries and organizations. Credit: NASA #nasa #flynasa #aeronautics #aero #nasaaero #test; -
Before drifting off to sleep tonight aboard the International Space Station, astronaut Scott Kelly (@stationcdrkelly) posted this image and wrote, "Day 123. Just when I think sunrise is as good as it gets, I see sunset. Good night from @ISS! #YearInSpace" Kelly is living and working off the Earth, for the Earth aboard the station for a yearlong mission. Traveling the world more than 220 miles above the Earth, and at 17,500 mph, he circumnavigates the globe more than a dozen times a day. Image Credit: NASA #nasa #iss #spacestation #space #isscrew;
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Aboard the International Space Station, astronaut Scott Kelly (@stationcdrkelly) posted this image July 19 and wrote, "Day 114. #Moon #Venus #Jupiter...#Earth Good night from @iss #YearInSpace." Kelly is living and working off the Earth, for the Earth aboard the station for a yearlong mission. Traveling the world more than 220 miles above the Earth, and at 17,500 mph, he circumnavigates the globe more than a dozen times a day. Image Credit: NASA #nasa #iss #spacestation #space #isscrew; -
This dramatic image shows the Hubble Space Telescope’s view of a dwarf galaxy known as NGC 1140, which lies 60 million light-years away in the constellation of Eridanus. As can be seen in this image NGC 1140 has an irregular form, much like the Large Magellanic Cloud — a small galaxy that orbits the Milky Way. This small galaxy is undergoing what is known as a starburst. Despite being almost ten times smaller than the Milky Way it is creating stars at about the same rate, with the equivalent of one star the size of our sun being created per year. This is clearly visible in the image, which shows the galaxy illuminated by bright, blue-white, young stars. Credit: ESA/Hubble & NASA #hubble #galaxy #dwarfgalaxy #nasa #space #universe #eridanus #nasahubble; -
Backlit by the sun, Pluto's atmosphere rings its silhouette like a luminous halo in this image taken by our New Horizons spacecraft around midnight EDT on July 15. This global portrait of the atmosphere was captured when the spacecraft was about 1.25 million miles (2 million kilometers) from Pluto and shows structures as small as 12 miles across. The image, delivered to Earth on July 23, is displayed with north at the top of the frame. Credits: NASA/JHUAPL/SwRI #pluto #nasa #apl #space #newhorizons #nasabeyond #plutoflyby #science; -
[Artistic Concept] Scientists using data from NASA's Kepler mission have confirmed the first near-Earth-size planet orbiting in the habitable zone of a sun-like star. The habitable zone is the region around a star where temperatures are just right for water to exist in its liquid form. The artistic concept compares Earth (left) to the new planet, called Kepler-452b, which is about 60 percent larger. The illustration represents one possible appearance for Kepler-452b -- scientists do not know whether the planet has oceans and continents like Earth. Both planets orbit a G2-type star of about the same temperature; however, the star hosting Kepler-452b is 6 billion years old, 1.5 billion years older than our sun. As stars age, they become larger, hotter and brighter, as represented in the illustration. Kepler-452b's star appears a bit larger and brighter. Image credit: NASA/Ames/JPL-Caltech/T. Pyle - Artistic Concept #nasa #kepler #space #exoplanet #nasabeyond #science; -
And Liftoff! The Soyuz TMA-17M rocket launched at 5:02 p.m. EDT today from the Baikonur Cosmodrome in Kazakhstan, as seen in this long exposure. The spacecraft is carrying Expedition 44 Soyuz Commander Oleg Kononenko of the Russian Federal Space Agency (Roscosmos), Flight Engineer Kjell Lindgren of NASA, and Flight Engineer Kimiya Yui of the Japan Aerospace Exploration Agency (JAXA) into orbit to begin their five month mission on the International Space Station. Photo Credit: NASA/Aubrey Gemignani #nasa #space #iss #spacestation #exp44 #roscosmos #isscrew @astro_kjell;
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Animated Flyover of Pluto’s Icy Mountain and Plains: This simulated flyover of Pluto’s Norgay Montes (Norgay Mountains) and Sputnik Planum (Sputnik Plain) was created from New Horizons closest-approach images. Norgay Montes have been informally named for Tenzing Norgay, one of the first two humans to reach the summit of Mount Everest. Sputnik Planum is informally named for Earth’s first artificial satellite. The images were acquired by the Long Range Reconnaissance Imager (LORRI) on July 14 from a distance of 48,000 miles (77,000 kilometers). Features as small as a half-mile (1 kilometer) across are visible. Credit: NASA/JHUAPL/SWRI #nasa #pluto #plutoflyby #space #newhorizons #nasabeyond #solarsystem #science; -
Our 'EPIC' camera on @NOAA's Deep Space Climate Observatory satellite, gave us this new view of the entire sunlit side of Earth from one million miles away. This color image of Earth was taken by NASA’s Earth Polychromatic Imaging Camera (EPIC), a four megapixel CCD camera and telescope. The image was generated by combining three separate images to create a photographic-quality image. The camera takes a series of 10 images using different narrowband filters -- from ultraviolet to near infrared -- to produce a variety of science products. The red, green and blue channel images are used in these color images. The image was taken July 6, 2015, showing North and Central America. The central turquoise areas are shallow seas around the Caribbean islands. This Earth image shows the effects of sunlight scattered by air molecules, giving the image a characteristic bluish tint. The EPIC team is working to remove this atmospheric effect from subsequent images. Once the instrument begins regular data acquisition, EPIC will provide a daily series of Earth images allowing for the first time study of daily variations over the entire globe. In celebration, we're taking over @WhiteHouse on Instagram for @NASA's & @NOAA's leaders to share some of their favorite views of Earth from space. See these views of our home planet on @WhiteHouse. Image credit: NASA #EarthRightNow #Earth #DSCOVR @NOAA #NASA #Space #BlueMarble #ActOnClimate; -
Titan may be a "large" moon - its name even implies it! - but it is still dwarfed by its parent planet, Saturn. As it turns out, this is perfectly normal. Although Titan (3200 miles or 5150 km across) is the second-largest moon in the solar system, Saturn is still much bigger, with a diameter almost 23 times larger than Titan’s. This disparity between planet and moon is the norm in the solar system. Earth’s diameter is “only” 3.7 times our moon’s diameter, making our natural satellite something of an oddity. (Another exception to the rule: dwarf planet Pluto’s diameter is just under two times that of its moon.) So the question isn't why is Titan so small (relatively speaking), but why is Earth’s moon so big? This view looks toward the anti-Saturn hemisphere of Titan. North on Titan is up. The image was taken with the Cassini spacecraft wide-angle camera on April 18, 2015 using a near-infrared spectral filter with a passband centered at 752 nanometers. The view was acquired at a distance of approximately 930,000 miles (1.5 million kilometers) from Titan. Image scale is 56 miles (90 kilometers) per pixel. Credit: NASA/JPL-Caltech/Space Science Institute #Cassini #Saturn #planets #space #solarsystem #titan #moon #nasa; -
Loops in Profile A whole series of loops towered above a group of active regions over a five-days period from July 9-13, 2015. When viewed in extreme ultraviolet light, magnetic field lines above the Sun's surface are revealed by charged particles that spin along the lines and create these loops. They are best observed along the edge of the Sun as they are here. The tallest of the loops reach up about 15 times the diameter of Earth. Image credit: NASA/SDO #nasa #space #sun #solar #sdo #sunloops; -
Portrait of Pluto and its largest moon! The latest two full-frame images of the dwarf planet and its moon were collected separately by New Horizons during approach on July 13 and July 14, 2015. The relative reflectivity, size, separation, and orientations of Pluto and Charon are approximated in this composite image, and they are shown in approximate true color. Image Credit: NASA/JHUAPL/SWRI #nasa #pluto #plutoflyby #newhorizons#solarsystem #charon #moon #nasabeyond #science;
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