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Daniel Scher
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Enthusiast photographer
Enthusiast photographer

323 followers
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Epic moment detected!
GW170817: A Spectacular Multi-Radiation Merger Event Detected
Illustrative Video Credit: NASA's Conceptual Imaging Lab
https://apod.nasa.gov/apod/ap171016.html

Both gravitational and electromagnetic radiations have been detected in rapid succession for an explosive merging event for the first time. Data from the outburst fit well with a spectacular binary neutron-star death-spiral. The explosive episode was seen on August 17 in nearby NGC 4993, an elliptical galaxy only 130 million light years distant. Gravitational waves were seen first by the ground based LIGO and Virgo observatories, while seconds later the Earth-orbiting Fermi observatory detected gamma-rays, and hours after that Hubble and other observatories detected light throughout the electromagnetic spectrum. Pictured is an animated illustrative movie of the event's likely progenitors. The video depicts hot neutron stars as they spiral in toward each other and emit gravitational radiation. As they merge, a powerful jet extends that drives the short-duration gamma-ray burst, followed by clouds of ejecta and, over time, an optical supernova-type episode called a kilonova. This first coincident detection confirms that LIGO events can be associated with short-duration gamma-ray bursts. Such powerful neutron star mergers are thought to have seeded the universe with many heavy nuclei including the iodine needed for life and the uranium and plutonium needed for nuclear fission power. You may already own a souvenir of one of these explosions -- they are also thought to be the original creators of gold.
2017 October 16
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Manhattan Moonrise
Image Credit & Copyright: Stan Honda
https://apod.nasa.gov/apod/ap170616.html

A Full Moon rose as the Sun set on June 9, known to some as a Strawberry Moon. Close to the horizon and taking on the warm color of reflected sunlight filtered through a dense and dusty atmosphere, the fully illuminated lunar disk poses with the skyscrapers along the southern Manhattan skyline in this telephoto snapshot. The picture was taken from Eagle Rock Reservation, a park in West Orange, New Jersey, planet Earth. That's about 13 miles from southern Manhattan and some 240,000 miles from the Moon. Foreground faces of the modern towers of steel and glass share the Moon's warm color by reflecting the last rays of the setting Sun. The tallest, with the shining triangular facet, is New York City's One World Trade center.
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Welcome back, Thomas!

Soyuz Landing: Oleg & Thomas | Roscosmos/ESA
The crew of the Soyuz MS-03 manned spacecraft returned safely to Earth from the International Space Station. The crew module with Roscosmos cosmonaut Oleg Novitskiy and ESA astronaut Thomas Pesquet landed in the Kazakhstan steppes on June 2 at 05:10 p.m. Moscow time. All operations on the descent from orbit and landing went normally.

Thomas spent six months on the International Space Station as part of his Proxima mission. During Proxima, Thomas took part in 60 scientific experiments for ESA and France’s space agency CNES and the international Station partners.

The mission is part of ESA’s vision to use Earth-orbiting spacecraft as a place to live and work for the benefit of European society while using the experience to prepare for future voyages of exploration further into the Solar System.

More about the Proxima mission: www.esa.int/proxima
Connect with Thomas Pesquet: thomaspesquet.esa.int

Image Credit: Reuters/Roscosmos
Image Date: June 2, 2017

+Thomas Pesquet
+CNES
+European Space Agency, ESA
+NASA Johnson Space Center

#NASA #ISS #Earth #Science #Soyuz #Spacecraft #Союз #Kazakhstan #Astronaut #ThomasPesquet #France #CNES #ESA #Cosmonaut #OlegNovitskiy #OlegNovitsky #Roscosmos #Роскосмос #Russia #Россия #Human #Spaceflight #Expedition51 #Expedition52 #UnitedStates #JSC #Photography #STEM #Education
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Well captured! French astronaut Thomas Pesquet is on board... Touchdown on Earth in a just few days for him!
International Space Station crosses waning gibbous Moon

"International Space Station crosses the disk of the waning gibbous Moon during daytime, Ocean View, Mount Mee, Queensland, Australia. The area around Mount Mee was known to the indigenous inhabitants of the area as Dahmongah, a word meaning "flying squirrel" or glider. On this day, the ISS is the fastest "glider" to have ever crossed over Mount Mee!"

4K Ultra High Definition Video: http://youtu.be/kLELciR46B4

Credit: Michael Marston
Michael's website: http://www.epixelimages.com.au
Release Date: April 23, 2017

+ePixel Images
+Michael Marston
+NASA Johnson Space Center

Technical details:
International Space Station
April 19, 2017 - 6h48m01.40s
Crosses the Waning Gibbous Moon (59%)
Ocean View, Mount Mee, Queensland, Australia
Transit-Duration: 0.52s, path width: 5.91km.
Diameter of ISS: 63.50" (Visible in Daytime)
Distance=448.7km
Angular Velocity=56.3'/s
Ground speed=7.414 km/s

#NASA #Earth #Astronomy #ISS #Science #Space #Moon #Lunar #Transit #Astrophotography #Photography #Timelapse #Art #SolarSystem #MountMee #Queensland #Australia #STEM #Education
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Meanwhile in a place free from light pollution...
Big Dipper Above and Below Chilean Volcanoes
Image Credit & Copyright: Yuri Beletsky (Carnegie Las Campanas Observatory, TWAN)
https://apod.nasa.gov/apod/ap170509.html

Do you see it? This common question frequently precedes the rediscovery of one of the most commonly recognized configurations of stars on the northern sky: the Big Dipper. This grouping of stars is one of the few things that has likely been seen, and will be seen, by every generation. The Big Dipper is not by itself a constellation. Although part of the constellation of the Great Bear (Ursa Major), the Big Dipper is an asterism that has been known by different names to different societies. Five of the Big Dipper stars are actually near each other in space and were likely formed at nearly the same time. Connecting two stars in the far part of the Big Dipper will lead one to Polaris, the North Star, which is part of the Little Dipper. Relative stellar motions will cause the Big Dipper to slowly change its configuration over the next 100,000 years. Pictured in late April, the Big Dipper was actually imaged twice -- above and below distant Chilean volcanoes, the later reflected from an unusually calm lagoon.
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Earth as seen between the rings of Saturn by the Cassini spacecraft camera. Take a closer look to spot the Moon on its left!
Between the Rings
Image Credit: Cassini Imaging Team, SSI, +NASA Jet Propulsion Laboratory, +European Space Agency, ESA, +NASA
https://apod.nasa.gov/apod/ap170422.html

On April 12, as the Sun was blocked by the disk of Saturn the Cassini spacecraft camera looked toward the inner Solar System and the gas giant's backlit rings. At the top of the mosaicked view is the A ring with its broader Encke and narrower Keeler gaps visible. At the bottom is the F ring, bright due to the viewing geometry. The point of light between the rings is Earth, 1.4 billion kilometers in the distance. Look carefully and you can even spot Earth's large moon, a pinprick of light to the planet's left. Today Cassini makes its final close approach to Saturn's own large moon Titan, using Titan's gravity to swing into the spacecraft's Grand Finale, the final set of orbits that will bring Cassini just inside Saturn's rings.
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The Butterfly Nebula from Hubble
Image Credit: +NASA, +European Space Agency, ESA , Hubble, HLA; Reprocessing & Copyright: Jesús M.Vargas & Maritxu Poyal
https://apod.nasa.gov/apod/ap170208.html

The bright clusters and nebulae of planet Earth's night sky are often named for flowers or insects. Though its wingspan covers over 3 light-years, NGC 6302 is no exception. With an estimated surface temperature of about 250,000 degrees C, the dying central star of this particular planetary nebula has become exceptionally hot, shining brightly in ultraviolet light but hidden from direct view by a dense torus of dust. This sharp close-up of the dying star's nebula was recorded by the Hubble Space Telescope and is presented here in reprocessed colors. Cutting across a bright cavity of ionized gas, the dust torus surrounding the central star is near the center of this view, almost edge-on to the line-of-sight. Molecular hydrogen has been detected in the hot star's dusty cosmic shroud. NGC 6302 lies about 4,000 light-years away in the arachnologically correct constellation of the Scorpion (Scorpius).
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Comet 45P Returns
Image Credit & Copyright: Fritz Helmut Hemmerich
https://apod.nasa.gov/apod/ap170102.html

An old comet has returned to the inner Solar System. Not only is Comet 45P/Honda–Mrkos–Pajdušáková physically ancient, it was first discovered 13 orbits ago in 1948. Comet 45P spends most of its time out near the orbit of Jupiter and last neared the Sun in 2011. Over the past few months, however, Comet 45P's new sunward plummet has brightened it considerably. Two days ago, the comet passed the closest part of its orbit to the Sun. The comet is currently visible with binoculars over the western horizon just after sunset, not far from the much brighter planet Venus. Pictured, Comet 45P was captured last week sporting a long ion tail with impressive structure. Comet 45P will pass relatively close to the Earth early next month.
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Sharpless 308: Star Bubble
Image Credit & Copyright: Anis Abdul
http://apod.nasa.gov/apod/ap161220.html

Blown by fast winds from a hot, massive star, this cosmic bubble is huge. Cataloged as Sharpless 2-308 it lies some 5,200 light-years away toward the constellation of the Big Dog (Canis Major) and covers slightly more of the sky than a full moon. That corresponds to a diameter of 60 light-years at its estimated distance. The massive star that created the bubble, a Wolf-Rayet star, is the bright one near the center of the nebula. Wolf-Rayet stars have over 20 times the mass of the Sun and are thought to be in a brief, pre-supernova phase of massive star evolution. Fast winds from this Wolf-Rayet star create the bubble-shaped nebula as they sweep up slower moving material from an earlier phase of evolution. The windblown nebula has an age of about 70,000 years. Relatively faint emission captured in the expansive image is dominated by the glow of ionized oxygen atoms mapped to a blue hue.
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From our labs to your homes, Happy Holidays! 🔭🔬
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