Walking On Air

http://youtu.be/hWz5ltE_I4c

This video features a series of time lapse sequences photographed by the Expedition 30 crew aboard the International Space Station. Set to the song "Walking in the Air," by Howard Blake, the video takes viewers around the world, through auroras, and over dazzling lightning displays. The sequences are as follows: :01 -- Stars over southern United States :08 -- US west coast to Canada :21 -- Central Europe to the Middle East :36 -- Aurora Australis over the Indian Ocean :54 -- Storms over Africa 1:08 -- Central United States 1:20 -- Midwest United States 1:33 -- United Kingdom to Baltic Sea 1:46 -- Moonset 1:55 -- Northern United States to Eastern Canada 2:12 -- Aurora Australis over the Indian Ocean 2:32 -- Comet Lovejoy 2:53 -- Aurora Borealis over Hudson Bay 3:06 -- United Kingdom to Central Europe Song lyrics: We're walking in the air We're floating in the moonlit sky The people far below are sleeping as we fly I'm holding very tight I'm riding in the midnight blue I'm finding I can fly so high above with you Far across the world The villages go by like dreams The rivers and the hills The forests and the streams Children gaze open mouth Taken by surprise Nobody down below believes their eyes We're surffing in the air We're swimming in the frozen sky We're drifting over icy Mountain floating by Suddenly swooping low on an ocean deep Arousing of a mighty monster from its sleep We're walking in the air We're floating in the midnight sky And everyone who sees us greets us as we fly This video can also be seen on the NASA website: http://www.nasa.gov/multimedia/videogallery/index.html?media_id=141042671

Mooi filmpje van de maan‏.

Hieronder een mooi filmpje van de maan

Je kan de kwaliteit best wijzigen want standaard wordt ie afgespeeld op 360 p. Je kan gaan tot 720 p (HD beelden)

http://youtu.be/0MPcgDE6IyA

Brave New World With stephen hawking: 3- deilge docu

Brave New World With stephen hawking - [s1e1] 





Brave New World With Stephen Hawking [s1e2]





Brave New World With stephen hawking - [s1e3]

Solar System.

Solar System

The Whole Story

Copy credit : Marcus Chown

Bron:

https://www.facebook.com/Milky way scientists

Guidestar 01- 2012.

Open publication - Free publishing - More sterrenkunde

http://issuu.com/patrickjaecques/docs/guidestar01-2012?mode=window&backgroundColor=%23222222

Voor nog meer boeken op het net: http://issuu.com/patrickjaecques

Leuke pdf - jes.

Gevonden op deze site: http://www.astronomie.be/

1: De zon onze dagster:

http://www.astrolab.be/educatief/Educatieve%20Brochures/AstroLAB%20IRIS%20-%20Educatieve%20brochure%201%20-%20De%20Zon.pdf

2: licht in de sterrenkunde:

http://www.astrolab.be/educatief/Educatieve%20Brochures/AstroLAB%20IRIS%20-%20Educatieve%20brochure%202%20-%20Licht%20in%20de%20Sterrenkunde.pdf

3 is er niet!!! Helaas pindakaas.

4: Leuke astrofotografie projecten:

http://www.astrolab.be/educatief/Educatieve%20Brochures/AstroLAB%20IRIS%20-%20Educatieve%20brochure%204%20-%20Leuke%20Astrofotografie%20Projecten.pdf

5: Deep-sky fotografie fotografie met digitale camera? Kom Nou!

http://www.astrolab.be/educatief/Educatieve%20Brochures/AstroLAB%20IRIS%20-%20Educatieve%20brochure%205%20-%20DSLR%20Deep-Sky.pdf

Wetenschappers halen licht uit ‘niets’

Onderzoekers hebben aangetoond dat het mogelijk is om iets uit ‘niets’ te halen: ze haalden energie uit een lege ruimte.

Iets uit niets halen. Kan dat? Jawel, zolang u maar ontzettend snel beweegt. 41 jaar geleden voorspelden onderzoekers al dat dit alles mogelijk was. Nu hebben wetenschappers het ook aangetoond.

Niet leeg
Niets bestaat namelijk eigenlijk niet. Lege ruimte is niet leeg. In lege ruimte bevinden zich deeltjes die zijn en dan weer niet zijn. Zelfs een vacuüm vertoont hele kleine fluctuaties in energie.

WIST U DAT?

…onlangs weer gebleken is dat deeltjes echt sneller kunnen reizen dan het licht?

Spiegels
Dat is al eens aangetoond met twee spiegels die op een kleine afstand tot elkaar in een vacuüm werden gezet. Deze spiegels werden dan naar elkaar toegetrokken, omdat in de kleine ruimte tussen de spiegels minder deeltjes (fotonen in dit geval) zaten dan elders rondom de spiegels. De druk aan de buitenzijde was dan ook groter dan tussen de spiegels en hierdoor worden de spiegels tegen elkaar aangedrukt. Het bewijs dat er energie is in een vacuüm.

Fotonen
Onderzoekers zijn nu echter nog een stap verder gegaan, zo is in het blad Nature te lezen. Ze hebben energie uit zo’n vacuüm gehaald. “Het was een heel moeilijk technisch experiment,” moet onderzoeker Chris Wilson bekennen. “We waren heel blij toen het gelukt was.”

Voor het experiment was maar één spiegel nodig. Deze moest met de snelheid van het licht reizen. De bewegingsenergie wordt dan geabsorbeerd door de fotonen en zij geven die energie weer af door paren echte fotonen te vormen. De onderzoekers gebruikten geen spiegel voor hun experiment, maar maakten gebruik van een supergeleidend elektrisch circuit met een oscillator die de afstand die een elektron door het circuit moet afleggen heel snel kon veranderen. De onderzoeker lieten de elektron heel snel reizen (met ongeveer een kwart van de snelheid van het licht) en dat was snel genoeg om bewegingsenergie over te brengen op fotonen. “Deeltjes werden in paren geproduceerd en kwamen direct uit het vacuüm,” vertelt Wilson. En dat is toch wel een doorbraak: mogelijk kan het onderzoekers helpen om een beter beeld te krijgen van donkere energie. Onderzoekers vermoeden namelijk dat donkere energie mede mogelijk wordt gemaakt door de energie van virtuele fotonen.

Geschreven door Caroline Hoek op 21 november 2011 om 11:56 uur

Bron: http://www.scientias.nl/

Parallel Universes, Galaxies, Stars, Planets and Black Energy

http://youtu.be/iiHP0C4EEdA

Foto's

Star Size Comparison HD

Video: Ascent - Commemorating Shuttle

Photographic documentation of a Space Shuttle launch plays a critical role in the engineering analysis and evaluation process that takes place during each and every mission. Motion and Still images enable Shuttle engineers to visually identify off-nominal events and conditions requiring corrective action to ensure mission safety and success. This imagery also provides highly inspirational and educational insight to those outside the NASA family.

Tour of the ISS

Nu heb je de gelegenheid om in het ISS ruimtevaartcomplex

eens rond te zweven. Frank de Winne is ook even te zien

in deze enorm grote behuizing....                toch speciaal

International Space Station Tour

Butterfly emerges from stellar demise in planetary nebula NGC 6302.

This celestial object looks like a delicate butterfly. But it is far from serene.

What resemble dainty butterfly wings are actually roiling cauldrons of gas heated to nearly 20 000 degrees Celsius. The gas is tearing across space at more than 950 000 kilometres per hour — fast enough to travel from Earth to the Moon in 24 minutes!

A dying star that was once about five times the mass of the Sun is at the centre of this fury. It has ejected its envelope of gases and is now unleashing a stream of ultraviolet radiation that is making the cast-off material glow. This object is an example of a planetary nebula, so-named because many of them have a round appearance resembling that of a planet when viewed through a small telescope.

The Wide Field Camera 3 (WFC3), a new camera aboard the NASA/ESA Hubble Space Telescope, snapped this image of the planetary nebula, catalogued as NGC 6302, but more popularly called the Bug Nebula or the Butterfly Nebula. WFC3 was installed by NASA astronauts in May 2009, during the Servicing Mission to upgrade and repair the 19-year-old Hubble.

NGC 6302 lies within our Milky Way galaxy, roughly 3800 light-years away in the constellation of Scorpius. The glowing gas is the star's outer layers, expelled over about 2200 years. The "butterfly" stretches for more than two light-years, which is about half the distance from the Sun to the nearest star, Proxima Centauri.

The central star itself cannot be seen, because it is hidden within a doughnut-shaped ring of dust, which appears as a dark band pinching the nebula in the centre. The thick dust belt constricts the star's outflow, creating the classic "bipolar" or hourglass shape displayed by some planetary nebulae.

The star's surface temperature is estimated to be over 220 000 degrees Celsius, making it one of the hottest known stars in our galaxy. Spectroscopic observations made with ground-based telescopes show that the gas is roughly 20 000 degrees Celsius, which is unusually hot compared to a typical planetary nebula.

The WFC3 image reveals a complex history of ejections from the star. The star first evolved into a huge red giant, with a diameter of about 1000 times that of our Sun. It then lost its extended outer layers. Some of this gas was cast off from its equator at a relatively slow speed, perhaps as low as 32 000 kilometres per hour, creating the doughnut-shaped ring. Other gas was ejected perpendicular to the ring at higher speeds, producing the elongated "wings" of the butterfly-shaped structure. Later, as the central star heated up, a much faster stellar wind, a stream of charged particles travelling at more than 3.2 million kilometres per hour, ploughed through the existing wing-shaped structure, further modifying its shape.

The image also shows numerous finger-like projections pointing back to the star, which may mark denser blobs in the outflow that have resisted the pressure from the stellar wind.

The nebula's reddish outer edges are largely due to light emitted by nitrogen, which marks the coolest gas visible in the picture. WFC3 is equipped with a wide variety of filters that isolate light emitted by various chemical elements, allowing astronomers to infer properties of the nebular gas, such as its temperature, density and composition.

The white-coloured regions are areas where light is emitted by sulphur. These are regions where fast-moving gas overtakes and collides with slow-moving gas that left the star at an earlier time, producing shock waves in the gas (the bright white edges on the sides facing the central star). The white blob with the crisp edge at upper right is an example of one of those shock waves.

NGC 6302 was imaged on 27 July 2009 with Hubble's Wide Field Camera 3 in ultraviolet and visible light. Filters that isolate emissions from oxygen, helium, hydrogen, nitrogen and sulphur from the planetary nebula were used to create this composite image.

These Hubble observations of the planetary nebula NGC 6302 are part of the Hubble Servicing Mission 4 Early Release Observations.

Credit:

NASA, ESA and the Hubble SM4 ERO Team

Bron: http://www.spacetelescope.org/images/heic0910h/

Solar Prominence Eruption (JHelioviewer/ SDO AIA)

Expedition 26 Soyuz Launch (201012160002HQ)

Quantum Mechanics: The Uncertainty Principle

A Brief History Of Quantum Mechanics

Newton's Laws of Motion illustrated with 3D animations and motion graphics

Comets - Remnants Of The Beginning

Sword Of Orion