Kanchana Sree

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What is Einstein's theory of relativity?

Albert Einstein’s theories of special and general relativity rule the field of classical physics.<p>Their effects can be seen in our everyday lives and …

Physics

APOD: NGC 7023: The Iris Nebula (2014 Aug 02) Image Credit & Copyright: Jimmy Walker http://apod.nasa.gov/apod/ap140802.html Explanation: These clouds of interstellar dust and gas have blossomed 1,300 light-years away in the fertile star fields of the constellation Cepheus. Sometimes called the Iris Nebula, NGC 7023 is not the only nebula in the sky to evoke the imagery of flowers, though. Still, this deep telescopic view shows off the Iris Nebula's range of colors and symmetries in impressive detail. Within the Iris, dusty nebular material surrounds a hot, young star. The dominant color of the brighter reflection nebula is blue, characteristic of dust grains reflecting starlight. Central filaments of the dusty clouds glow with a faint reddish photoluminesence as some dust grains effectively convert the star's invisible ultraviolet radiation to visible red light. Infrared observations indicate that this nebula may contain complex carbon molecules known as PAHs. The pretty blue petals of the Iris Nebula span about six light-years. http://jwalk.smugmug.com/ Starship Asterisk* • APOD Discussion Page http://asterisk.apod.com/discuss_apod.php?date=140802 #APOD

APOD: Surreal Moon (2014 Aug 14) Image Credit & Copyright: Jerry Lodriguss (Catching the Light) http://apod.nasa.gov/apod/ap140814.html Explanation: Big, bright, and beautiful, a Full Moon near perigee, the closest point in its elliptical orbit around our fair planet, rose on August 10. This remarkable picture records the scene with a dreamlike quality from the east coast of the United States. The picture is actually a composite of 10 digital frames made with exposures from 1/500th second to 1 second long, preserving contrast and detail over a much wider than normal range of brightness. At a perigee distance of a mere 356,896 kilometers, August's Full Moon was the closest, and so the largest and most super, of the three Full Moons nearest perigee in 2014 now popularly known as supermoons. But if you missed August's super supermoon, the next not-quite-so supermoon will be September 8. Then, near the full lunar phase the Moon's perigee will be a slightly more distant 358,387 kilometers. That's only about 0.4 percent less super (farther and smaller) than the super supermoon. http://www.astropix.com/ Starship Asterisk* • APOD Discussion Page http://asterisk.apod.com/discuss_apod.php?date=140814 #APOD

New Mars rover photos you need to see

Houston, we have new photos.<p>NASA just released a series of snapshots from Mars rovers Opportunity and Spirit that show the understated beauty of the planet's landscape and climate.<p>Released to celebrate the 10th anniversary of Opportunity's and Spirit's landings on the Red Planet, the photos will be …

Yes or No Optical Illusion

A couple weeks ago, I posted up an <b>animated optical illusion</b> and it was the first animated optical illusion I had posted up on the site in a while. If …

True or False Optical Illusion

The weekend is coming to an end and I hope all of you have had an excellent weekend. I’ve certainly enjoyed mine to the fullest extent and I hope …

Breathtaking Photos of the Blue Forest in Belgium

If you love discovering extraordinary travel destinations off the beaten path, do we have a place for you. Though this may look like a scene straight out of a fairy-tale, this blue forest is, in fact, real. Just 30 minutes south of Brussels, in Belgium, is a forest called Hallerbos. During the …

Photography

NASA Reveals Unprecedented Image of Deep Space

This article is from the archive of our partner .<p>NASA revealed today one of the most colorful and comprehensive composite shots of deep space, a work …

New 'Mega-Earth' Means Habitable Worlds Could Be Even Closer

New data on a planet discovered by the Kepler space telescope back in 2011 has helped scientists to determine that Kepler-10c is actually a new type of planet — a huge, rocky “mega-Earth” that shouldn’t be able to exist according to most planet formation theories.<p>“This is the Godzilla of Earths!” …

Associated Press News

White matter might matter much more than we thought

Changes in the brain's myelin distribution might be an unrecognised form of neuronal plasticity.<p>Look up ‘myelin’ in any neuroscience textbook and you’ll find something along these lines: It is a fatty substance that forms a sheath around axons, and gives the fibre bundles their white appearance …