Update news

Update news

Nokia has recently started selling Nokia Lumia 720 in the local market at affordable price. The smartphone is available in the market in five colours with a price tag of Tk 27,999.;;Samsung Galaxy S4 launched;; Chittagong to get 3G this month;;Galaxy S4 may prompt Apple rethink;;iPad to cede Google Android;;Voyager now in solar system border;

Thursday 23 May 2013

New window to universe



An artist’s impression of the Circinus X-1 system showing the binary (double) star system. Two stars orbit each other every 16.5 days in an elliptical orbit. The small white sphere is the neutron star — an extremely dense and compact remnant of an exploded star, only about 20 km in diameter.
The red sphere is an ordinary star — the companion star in this system. When the two stars are at their closest, the neutron star pulls material from its companion star.

An accretion disk (the blue disk) forms around the neutron star, containing the matter that is sucked from the ordinary star. Powerful jets of material (the orange rays) then blast out from the neutron star at close to the speed of light, causing powerful flares in radio frequencies.

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