Alexander Gerst returns from ISS / Alexander Gerst kehrt von der ISS zurück
Alexander Gerst ist wieder zurück auf der Erde: All-Zeit vorbei
Fast 200 Tage lang war Astronaut Alexander Gerst auf der ISS, jetzt ist er zurück: Um kurz nach sechs Uhr landete er in Kasachstan. Noch am Abend wird er in Deutschland erwartet.
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via SPIEGEL ONLINE – December 20, 2018 at 07:37AM
Rückkehr des ESA-Astronauten Alexander Gerst am 20.12.2018
Der deutsche ESA- Astronaut Alexander Gerst beendet seinen zweiten Aufenthalt auf der Internationalen Raumstation. Er ist bisher der zweite ESA-Astronaut, der das Kommando über die Internationale Raumstation inne hatte. Damit geht auch seine Horizons-Mission zu Ende, bei der über 50 Experimente im schwerelosen Forschungslabor der ISS für die Partner durchgeführt wurden.
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via European Space Agency – December 20, 2018 at 07:42AM
Watch Alexander Gerst’s return to Earth
ESA astronaut Alexander Gerst is wrapping up his second stay on the International Space Station, the Horizons mission, running over 50 experiments for the partners of the weightless research laboratory as well as maintaining the outpost. Alexander became the second ESA astronaut to take over command of the International Space Station.
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via European Space Agency – December 20, 2018 at 07:43AM
NASA Astronaut, Crewmates Returns to Earth After 197-Day Mission
Three members of the International Space Station’s Expedition 57 crew, including NASA astronaut Serena Auñón-Chancellor, returned to Earth Thursday, safely landing at 12:02 a.m. EST (11:02 a.m. local time) in Kazakhstan. Auñón-Chancellor and her crewmates, Expedition 57 Commander Alexander Gerst of ESA (European Space Agency) and Soyuz Commander Sergey Prokopyev, launched June 6 and arrived at the space station two days later to begin their mission. Over 197 days, they circled the globe 3,152 times, covering 83.3 million miles.
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via NASA – December 20, 2018 at 07:58AM
Most distant encounter: Spacecraft New Horizons approaching Ultima Thule / Bisher entfernteste Begegnung: Raumsonde New Horizons wird bald Ultima Thule erreichen
New Horizons Spacecraft on Target for Superclose Flyby of Ultima Thule
NASA’s New Horizons spacecraft will indeed get very close to the mysterious, distant object Ultima Thule on New Year’s Day. Mission principal investigator Alan Stern today (Dec. 18) gave the all-clear for New Horizons to stay on its optimal flyby course, which will take the probe within just 2,200 miles (3,500 kilometers) of Ultima Thule at 12:33 a.m. EST (0533 GMT) on Jan. 1.
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via Space.com https://www.space.com- December 19, 2018 at 01:22PM
What to Expect When New Horizons Visits 2014 MU69, Ultima Thule
New Horizons is rapidly approaching its New Year’s encounter with the most distant world ever visited, 2014 MU69. Closest approach will be at a distance of 3,500 kilometers at about 05:33 on 1 January UTC, and it’ll happen at a zippy 14.16 kilometers per second. Space fans can’t wait to see pictures of this distant, tiny world, an ancient relic of the formation of our solar system, which the mission and NASA have nicknamed “Ultima Thule,” until it is formally named. (I think we should all get to give it our own nicknames. I’m partial to „Moo,“ or maybe „Peanut.“)
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via | The Planetary Society – December 19, 2018 at 09:25PM
Hell Yes, NASA’s New Horizons Will Buzz Right Past Ultima Thule on New Year’s Day
Today was the last possible day for mission controllers to adjust the trajectory of the New Horizons spacecraft as it approaches Ultima Thule, a distant Kuiper Belt object. With no detectable dangers in sight, NASA has given the green light for the spacecraft to remain along its optimal path—a trajectory that will result in an intimate flyby in just two weeks time.
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via Gizmodo – December 19, 2018 at 09:26PM
New Horizons‘ Flyby of Ultima Thule (KBO 2014 MU69)
After the successful flyby of Pluto on July 14th 2015, the interplanetary probe New Horizons is continuing it’s mission targeting 2014 MU 69, nickamed Ultima Thule, a remote trans-neptunian Kuiper Belt Object.
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via TheSkyLive: The Solar System at your Fingertips – December 19, 2018 at 09:26PM
Saturn loses its rings / Saturn verliert seine Ringe
Saturn’s Rings Are Beautiful, But They Won’t Last
Chances are, you wouldn’t recognize Saturn without its trademark thick band of rings. But if you could travel 300 million years into the future, you would need to, because by then, chances are those rings would be gone — and they could disappear even faster.
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via Space.com https://www.space.com- December 18, 2018 at 01:41PM
Saturn verliert seine Ringe
Die typischen Ringe des Planeten verschwinden allerdings nicht plötzlich, sondern allmählich. Sie bestehen zu großen Teilen aus Wassereis und regnen sozusagen auf die Saturnoberfläche. Astronomen der Nasa haben ausgerechnet, dass jede Sekunde etwa eineinhalb Tonnen Eis durch die Schwerkraft des Planeten runterkommen. Wenn das so weitergeht, hat Saturn in 300 Millionen Jahren keine Ringe mehr. Das Team hat noch andere Verluste eingerechnet und kommt dann sogar auf nur noch 100 Millionen Jahre. Das ist ganz schön kurz, wenn man es mit den vier Milliarden Jahren vergleicht, die der Saturn alt ist.
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via Deutschlandfunk Nova – December 19, 2018 at 09:24PM
Bröckelndes Geröll: Der Saturn verliert seine Ringe – SPIEGEL ONLINE – Wissenschaft
100.000 Ringe umfassen den Saturn, ihr äußerer hat einen Durchmesser von nahezu einer Million Kilometer. Erstaunlich dünn sind die Ringe, der dickste misst gerade mal 100 Meter. Eine Schallplatte mit dem gleichen Verhältnis von Dicke zu Durchmesser wäre nicht mal einen Zehntausendstel Millimeter hoch.
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via SPIEGEL ONLINE – December 19, 2018 at 09:25PM
Ringless Saturn? The Planet’s Famous Feature May Be Surprisingly Young.
Saturn’s rings are among the most eye-catching sights in the solar system—and yet they haven’t always been there. A new analysis suggests the planet’s majestic bangles might be so young that if dinosaurs looked up, they could have witnessed an otherwise plain, straw-colored Saturn putting a ring on itself—one that would have been briefly enormous.
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via Latest Stories – December 19, 2018 at 09:27PM
Saturn is losing its rings: NASA says they will be gone in 100m years
The rings are being pulled into Saturn by gravity as a dusty rain of ice particles, a new NASA study has revealed. Ring particles are caught in a balancing act between the pull of Saturn’s gravity, which wants to draw them back into the planet, and their orbital velocity, which wants to fling them outward into space. ‚We estimate that this ‚ring rain‘ drains an amount of water products that could fill an Olympic-sized swimming pool from Saturn’s rings in half an hour,‘ said James O’Donoghue of NASA’s Goddard Space Flight Center in Greenbelt, Maryland.
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via Mail Online – December 19, 2018 at 09:28PM
Steph Curry Tells Former Astronaut Scott Kelly Moon-Landing Comment Was ‚Made in Jest‘
Steph Curry is sorry for all the trouble his moon-landing comments have caused. On a podcast that aired last week, the NBA superstar said he doesn’t believe that humanity actually landed on the moon. The offhand remark (which was echoed by several other NBA players on the podcast) went viral, prompting a wave of reaction from folks imploring Curry to clarify or repudiate his stance, and to educate himself about NASA and spaceflight history.
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via Space.com https://www.space.com- December 17, 2018 at 10:32PM