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Joined: Nov 2003
Posts: 12,002
Wiki Master
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Wiki Master
Joined: Nov 2003
Posts: 12,002 |
![[Linked Image]](http://antwrp.gsfc.nasa.gov/apod/image/0909/startrails_bury.jpg) As the Earth spins on its axis, the sky seems to rotate around us. This motion, called diurnal motion, produces the beautiful concentric trails traced by stars during time exposures. Partial-circle star trails are pictured above over Grants Pass, Oregon, USA last month. Near the middle of the circles is the North Celestial Pole (NCP), easily identified as the point in the sky at the center of all the star trail arcs. The star Polaris, commonly known as the North Star, made the very short bright circle near the NCP.
What If There Were No Hypothetical Questions?
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Joined: Apr 2006
Posts: 12,369 Likes: 1
Wiki Master
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OP
Wiki Master
Joined: Apr 2006
Posts: 12,369 Likes: 1 |
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Joined: Jul 2008
Posts: 10,000
Awesome Wiki Master
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Awesome Wiki Master
Joined: Jul 2008
Posts: 10,000 |
![[Linked Image]](http://i.dailymail.co.uk/i/pix/2009/09/15/article-1213580-06708FBE000005DC-29_964x331_popup.jpg) A new magnificent 800-million-pixel panorama of the entire sky has been unveiled online today. It was stitched together from 1,200 photos by astronomers at the European Southern Observatory from viewing sites in Chile. The project allows stargazers to explore and experience the Universe as it is seen with the unaided eye from the darkest and best viewing locations in the world. The image of the celestial sphere is the first of three high-resolution images featured in the GigaGalaxy Zoom project from ESO. The project seeks to link the sky we can all see with the deep, “hidden” cosmos that astronomers study on a daily basis. It features a web tool that allows users to take a breathtaking dive into our Milky Way. Users can also learn about features such as multi-coloured nebulae and exploding stars just by clicking on them. More here...
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Joined: Nov 2003
Posts: 12,002
Wiki Master
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Wiki Master
Joined: Nov 2003
Posts: 12,002 |
![[Linked Image]](http://apod.nasa.gov/apod/image/0909/freeflyer_nasa.jpg) At about 100 meters from the cargo bay of the space shuttle Challenger, Bruce McCandless II was farther out than anyone had ever been before.
What If There Were No Hypothetical Questions?
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Joined: Nov 2008
Posts: 8,632 Likes: 14
Wiki Veteran
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Wiki Veteran
Joined: Nov 2008
Posts: 8,632 Likes: 14 |
Fook that, hasn't he got a line on him.
God help us,
Come yourself,
Don't send Jesus,
This is no place for children.
Bertieone.
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Joined: Apr 2006
Posts: 12,369 Likes: 1
Wiki Master
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OP
Wiki Master
Joined: Apr 2006
Posts: 12,369 Likes: 1 |
Fook that, hasn't he got a line on him.  
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Joined: Apr 2009
Posts: 871
Wise One
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Wise One
Joined: Apr 2009
Posts: 871 |
i wonder if he can see his house from there 
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Joined: Nov 2003
Posts: 12,002
Wiki Master
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Wiki Master
Joined: Nov 2003
Posts: 12,002 |
What If There Were No Hypothetical Questions?
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Joined: Jul 2008
Posts: 1,515
Forum Addict
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Forum Addict
Joined: Jul 2008
Posts: 1,515 |
Don't know if this has been posted here before, but here's a website that tells you the position of satelites around the Earth. We used it to watch the International Space Station whizz by last year.
www,n2yo,com
Sometime you can't se the satelites because the sun isn't in the right position etc but the web site tells you that.
See you in cyberspace!
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Joined: Nov 2003
Posts: 12,002
Wiki Master
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Wiki Master
Joined: Nov 2003
Posts: 12,002 |
![[Linked Image]](http://apod.nasa.gov/apod/image/1004/icevolcano_fulle.jpg) Explanation: Why did the recent volcanic eruption in Iceland create so much ash? Although the large ash plume was not unparalleled in its abundance, its location was particularly noticeable because it drifted across such well populated areas. The Eyjafjallajökull volcano in southern Iceland began erupting on March 20, with a second eruption starting under the center of a small glacier on April 14. Neither eruption was unusually powerful. The second eruption, however, melted a large amount of glacial ice which then cooled and fragmented lava into gritty glass particles that were carried up with the rising volcanic plume. Pictured above, lightning bolts illuminate ash pouring out of the Eyjafjallajökull volcano.
What If There Were No Hypothetical Questions?
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Joined: Nov 2003
Posts: 12,002
Wiki Master
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Wiki Master
Joined: Nov 2003
Posts: 12,002 |
![[Linked Image]](http://www.nasa.gov/images/content/214811main_EarthMoon-516.jpg) This is an image of Earth and the moon, acquired on October 3, 2007, by the HiRISE camera on NASA's Mars Reconnaissance Orbiter.
At the time the image was taken, Earth was 142 million kilometers (88 million miles) from Mars, giving the HiRISE image a scale of 142 kilometers (88 miles) per pixel, an Earth diameter of about 90 pixels and a moon diameter of 24 pixels. The phase angle is 98 degrees, which means that less than half of the disk of the Earth and the disk of the moon have direct illumination. We could image Earth and moon at full disk illumination only when they are on the opposite side of the sun from Mars, but then the range would be much greater and the image would show less detail.
What If There Were No Hypothetical Questions?
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Joined: May 2010
Posts: 1
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Joined: May 2010
Posts: 1 |
[url=http://www.softwareoutsourcing.biz/ sw [/url]
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Joined: May 2010
Posts: 2,492
Forum Master
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Forum Master
Joined: May 2010
Posts: 2,492 |
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zippy
Unregistered
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zippy
Unregistered
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how come pic's from the moon, you never see stars in the back ground?
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Joined: Jul 2008
Posts: 1,515
Forum Addict
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Forum Addict
Joined: Jul 2008
Posts: 1,515 |
NASA forgot to put any in their soundstage!
See you in cyberspace!
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![[Linked Image]](http://antwrp.gsfc.nasa.gov/apod/image/0910/3PlanetsMoonLabel_seip900.jpg)
