Science is for Sharing

Why does earth follow an elliptical orbit? Why not a circular orbit? Earth's orbit is almost a perfect circle; its eccentricity is only 0.0167 It is explained by PROF. H.K. SAHU ofChennai Mathematical Institute through The Hindu. http://www.thehindu.com/sci-tech/article2366177.ece you can also like to read these:    http://en.wikipedia.org/wiki/Milankovitch_cycles   http://en.wikipedia.org/wiki/Orbit http://www.windows2universe.org/physical_science/physics/mechanics/orbit/ellipse.html here are some more interesting stuff http://www.analemma.com/Pages/EllipticalOrbit/EllipticalOrbitEffect/../../../Graphics/eccentricity/CvE_Part1.mov http://www.analemma.com/Pages/EllipticalOrbit/EllipticalOrbitEffect/EllipticalOrbitEffect.html

Researchers who are working to fix global positioning system (GPS) errors have devised software to take a more accurate measurement of altitude . Read here for details http://www.physorg.com/news/2011-08-gps-accuracy-3rd-dimension.html

This is a rare photograph taken by NASA astronaut Ron Garan through from space station, a Perseid meteor was captured as the piece of comet dust slammed into the Earth's atmosphere. Here is the latest release video with wonderful explanation.... Interesting and informative. Courtesy: http://news.discovery.com/space/astronaut-photographs-perseid-meteor-from-space-110814.html http://youtu.be/lxYNX2XaKkg

Scientists says that level of Arctic sea ice would decrease rapidly and will eventually disappear during summer if climate change continues. But in an unexpected new result, the NCAR research team found that Arctic ice under current climate conditions is as likely to expand as it is to contract for periods of up to about a decade. So, temporary halt to the loss of the ice!!! At longer time scales, 50 or 60 years, there’s no escaping the loss of ice in the summer..... The study appears this week in Geophysical Research Letters. Sea ice off the Alaskan coast. (©UCAR, Photo by Carlye Calvin Detailed report:  https://www2.ucar.edu/news/5124/arctic-ice-melt-could-pause-near-future-then-resume-again

It's indeed a interesting to see how the Earthquake near Japan coast triggered a Tsunami and caused the breakage of an ice shelf in Antarctica...!!!! U can see here the images, animation of this hypothesis. See the link below for detailed analysis http://news.discovery.com/earth/japan-tsunami-broke-antarctic-ice-shelf-110809.html courtesy: Analysis by Kieran Mulvaney @  http://news.discovery.com/earth http://www.nasa.gov/topics/earth/features/tsunami-bergs.html

The bottom 2 images are zoomed portion from 1st image. These contrails exhibit a phenomenon known as Crow Instability. Vortices that form within contrails have been observed to occasionally interact with each other.... U can read detailed report here. http://epod.usra.edu/blog/2011/08/crow-instability-in-contrails.html

MeteorWatch is Coming! Look for Perseids With the Rest of the World. http://www.universetoday.com/87922/meteorwatch-is-coming-look-for-perseids-with-the-rest-of-the-world/ This year’s Perseid meteor shower peaks during August 12-13. Open your eyes...... watch the fireworks in the sky......  enjoy! courtesy:   http://www.universetoday.com/ http://twitter.com/#!/EarthPic http://youtu.be/XPxvUzsft_k?hd=1