Universe Today - November 25, 2005

Questions for Dr. Lawrence M. Krauss
Nov 25, 2005 - Theoretical physicist Dr. Lawrence M. Krauss from Case Western University and author of Hiding in the Mirror: The Mysterious Allure of Extra Dimensions, from Plato to String Theory and Beyond has agreed to answer questions from the Bad Astronomy/Universe Today forum. If you've got puzzling questions about physics, multiple dimensions, or any of his books, follow this link to the forum and post a question. We'll gather up the best questions and pass them along to Dr. Krauss to answer. I'll post his answers back in Universe Today when I get them.

If you're not a member of the forum, you'll need to register before posting your questions. Drop me an email if you're having any problems registering. (Full Story)
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Earth and Moon system as seen by VIRTIS-M. Image credit: ESA Click to enlarge
Venus Express Photographs the Earth and Moon
Nov 25, 2005 - Now on its way to our nearest planetary neighbour, Venus Express tested its VIRTIS optics system by taking pictures of the Earth and the Moon. ESA controllers ran the spacecraft through a commissioning phase to test all of its scientific instruments. It took pictures of the Earth and the Moon when it was 3.5 million kilometres away. The VIRTIS instrument is also on board the Rosetta spacecraft, which also took images of our planet. ESA scientists will be able to compare the images to ensure the instrument is working perfectly. (Full Story)
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Artist's impression of the stellar object MWC 297. Image credit: ESO Click to enlarge
AMBER Instrument Combines Three Telescopes
Nov 25, 2005 - The newly installed AMBER instrument on ESO's Very Large Telescope Interferometer combines the light from two or three 8.2 metre telescopes creating a virtual telescope 40 - 90 metres across (131 - 295 feet). It was used to observe a young, newly forming star called MWC 297, and discovered that it's surrounded by a proto-planetary disc which is strangely truncated near the star. (Full Story)
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Mimas standing in front of Saturn's rings. Image credit: NASA/JPL/SSI Click to enlarge
Death Star Mimas and Its Giant Crater Herschel
Nov 25, 2005 - In this Cassini image of Mimas perched in front of Saturn's moons, you can clearly see its giant crater Herschel. The 130-kilometer (80-mile) crater makes the moon look like the Death Star from Star Wars. Cassini took this image on October 13, 2005 when it was approximately 711,000 kilometers (442,000 miles) from Mimas. (Full Story)
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Image credit: Thomas Davis. Click to enlarge
Orion by Thomas Davis
Nov 25, 2005 - Thomas Davis took this picture of the M78 Orion on the 12th of December, 2004 from Inkom, ID. Thomas used Astro-Physics 155 EDF f/7 refractor.

Do you have photos you'd like to share? Post them to the Universe Today astrophotography forum or email them to me directly, and I might feature one in Universe Today. (Full Story)
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