Posts mit dem Label Science werden angezeigt. Alle Posts anzeigen
Posts mit dem Label Science werden angezeigt. Alle Posts anzeigen

10/20/2013

10/10/2012

NASA_EDGE, ESA, Science |






15 Twitter Accounts Every Space Lover Should Follow
We found the Twitter accounts that put a human voice on the vast universe beyond our planet Earth and promote the often underappreciated world of science.
mashable.com · Twittere diese Story

Large water reservoirs at the dawn of stellar birth
ESA's Herschel space observatory has discovered enough water vapour to fill Earth's oceans more than 2000 times over, in a gas and dust cloud that is on the verge of collapsing into a new Sun-like star.
esa.int · Twittere diese Story

Thousands flock to see ESA's BepiColombo mission to Mercury
ESA shows off BepiColombo, a spacecraft that will reveal new secrets about the innermost world in the Solar System, Mercury.
sen.com · Twittere diese Story

Tweets

Elon Musk @elonmusk 08 Okt
Falcon 9 rocket booster has delivered Dragon to its target orbit!
Retweetet von Florida Today Space, X PRIZE Foundation und 757 anderen
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星出 彰彦 (JAXA宇宙飛行士) @Aki_Hoshide 08 Okt
Beautiful Aurora sighting after watching a successful Dragon launch. ドラゴン打ち上げを見届けた後、窓から見えた美しいオーロラ。 pic.twitter.com/sWwnFVwu
Retweetet von NASA Astronauts, Johnson Space Center und 647 anderen
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NASA Dryden @NASADryden 09 Okt
Inflatable half-scale model of a NASA F/A-18 points skyward as a host of hot-air balloons ascend at #NASAFiesta twitpic.com/b2njxd
Retweetet von NASA, NASA_EDGE und 90 anderen
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Sunita Williams @Astro_Suni 09 Okt
Busy day aboard #ISS. Perhaps another geo quiz will keep you all busy back on Earth.  twitpic.com/b2lkpb
Retweetet von NASA Astronauts, ISS Research und 51 anderen
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Martin Watterston @ukmw 09 Okt
@VirtualAstro #Aurora pic from Fife Scotland tonight. pic.twitter.com/AuxfIgLS
Retweetet von Virtual Astronomer, Jason Major und 33 anderen
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6/26/2012

from Space - Inside Earth

Delving Inside Earth from Space:
European Space Agency, or ESA, astronaut André Kuipers is running experiments on the International Space Station that are shedding light on conditions deep inside Earth. Orbiting some 248 miles (400 km) above us, Geoflow is offering insights into the inner workings of our planet.Descending 1,864 miles (3,000 km) under our feet, Earth’s mantle is a semi-solid fluid under our thin outer crust. The highly viscous layers vary with temperature, pressure and depth.
Understanding how the mantle flows is a major interest for geophysics because it could help to explain earthquakes or volcanic eruptions. Computers can model it, but how can scientists be sure they are correct? The deepest that humans have ever drilled is just over 7.5 (12 km), so investigating the mantle directly is out of reach for the immediate future.
















The complete Geoflow laboratory experiment that was installed on the International Space Station. Geoflow is used to verify and improve computer models of fluid convection. - Image Credit: ESA
Instead of probing Earth’s depths directly, six European teams led by the University of Cottbus in Germany looked to recreate aspects of mantle flow in a laboratory. Experiments simulating these conditions can verify and improve the computer models.
This poses a different problem, however. How can gravity be simulated without Earth’s gravity itself influencing the results? The solution is to send an experiment to our largest weightless laboratory: the International Space Station.

Planet in a box
ESA sponsored the development of an experiment that mimics the geometry of a planet. Called Geoflow, it contains two revolving concentric spheres with a liquid between them.


Geoflow data from the International Space Station showing how a liquid between two revolving concentric spheres moves as the temperature between the outer and inner sphere changes. - Image Credit: ESA
The inner sphere represents Earth’s core, with the outer sphere acting as the crust. The liquid, of course, is the mantle. Free from the influence of Earth’s gravity, a high-voltage electrical field creates artificial gravity for the experiment. As the spheres rotate slowly and a temperature difference is created between the shells, movement in the liquid is closely monitored. The temperatures can be controlled down to a tenth of a degree.

















Inside the Geoflow experiment two revolving concentric spheres heat a liquid. By observing how the liquid moves in response to temperature differences, scientists are verifying and improving computer models of fluid convection. - Image Credit: ESA
André has seen plumes of hotter liquid rising towards the outer shell — as predicted by computer simulations.
Mushroom-like plumes in fluids exposed to strong temperature differences might explain the Hawaiian line of volcanoes in the South Pacific.
A better understanding of our planet is not the only outcome of Geoflow. The results could also benefit industry by improving spherical gyroscopes, bearings and centrifugal pumps, for example. 

Quelle: NASA, ESA, Monnandback


11/10/2011

icelefant -ice- hat Sie zu seinen Kreisen hinzugefügt und zu Google+ eingeladen

icelefant -ice- hat Sie zu seinen Kreisen hinzugefügt und zu
Google+ eingeladen.


 Bei Google+ mitmachen

Mit Google+ fühlt sich das Teilen im Web ähnlich wie das
Teilen im richtigen Leben an.
Circles
Eine tolle Möglichkeit, einige Dinge mit
Kommilitonen zu teilen, andere Dinge
mit den Eltern, aber so gut wie nichts
mit dem Chef. Genau wie im richtigen Leben.
Hangouts
Unterhaltungen sind besser, wenn sich
die Gesprächspartner dabei sehen können.
Betreten Sie einen Video-Hangout von Ihrem
Computer oder Mobiltelefon aus, um sich
über Aktuelles zu informieren, sich zusammen
YouTube-Videos anzusehen oder sich mit bis
zu neun Freunden gleichzeitig auszutauschen.
Mobil
Blitzschneller Gruppen-Chat. Fotos,
die sich von selbst hochladen. Aktuelle
lokale Ereignisse aus der Vogelperspektive.
Google+ ist für die mobile Nutzung optimiert.
Sie haben diese Nachricht erhalten, weil icelefant -ice- Mich zu Google+ eingeladen hat. Von diesen E-Mails abmelden.

3/23/2011

The icelefant Daily |Edition of Wednesday, Mar. 23, 2011

======================
The icelefant Daily |The spacefuture Daily |The astronomy Daily


============================
OTHER HEADLINES OF INTEREST TODAY

APOD: 2011 March 22 - NGC 6384: Spiral Beyond the Stars


Published on SpaceTwits.com



APOD: 2011 March 23 - MWC 922: The Red Square Nebula








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1/24/2011

JAXA |2025

2025 - An Ideal Society Through Aerospace Technology:

Today, aircraft are an essential mode of transportation. 
They connect countries around the world, carrying large
numbers of passengers and huge amounts of cargo. 
We also recognize the social benefits and usefulness of
artificial satellites for such things as weather forecasting,
communications and observing Earth.

...


quelle: JAXA

12/21/2010

Observatorium |IceCube



Das bisher größte Neutrino-Teleskop der Welt

ist nach knapp sechs Jahren Bauzeit und einem Jahrzehnt
Vorbereitung dieser Tage fertig gestellt worden. Kernstück
der Anlage in der Antarktis ist ein Eiswürfel mit einer Größe
von einem Kubikkilometer, der mit höchstempfindlichen 
Lichtsensoren durchsetzt ist. Die Sensoren sollen Spuren
der flüchtigen Neutrinos aus dem Weltall auffangen.



8/19/2010

Conferences, launches and competitions |C’Space

C’Space at Biscarosse from 23 to 27 August:

DSC_7317_155.png

While budding young talents will be meeting up with space professionals at
the CELM military base in Southwest France, a one-of-a-kind space festival
awaits the visiting public on the beach at Biscarrosse on 26-27 August.