۲۱ فوریه ۲۰۱۴
تصویر روز
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The red arc in this infrared image from NASA's Spitzer Space Telescope is a giant shock wave, created by a speeding star known as Kappa Cassiopeiae. It is a massive, hot supergiant moving at around 2.5 million mph relative to its neighbors (1,100 kilometers per second). But what really makes the star stand out is the surrounding, streaky red glow of material called a bow shock, in its path. (Image Credit: NASA/JPL-Caltech)
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Footprints of a Cabypara are seen on the cracked grounds of the Jaguari dam in Joanopollis, 136 km (77 miles) from Sao Paulo, Brazil.
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Ukraine's President Viktor Yanukovych shakes hands with opposition leader Vitaly Klitschko (L) after signing an EU-mediated peace deal, aiming to end a violent standoff that has left dozens dead and opening the way for an early presidential election this year, at the presidential headquarters in Kyiv.
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A view of the Delta IV rocket streaking across the sky after launching from Cape Canaveral Air Force Station is seen from Port Canaveral, Florida, Feb. 20, 2014.
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A cat is seen at Kennedy Park in Miraflores district, in Lima, Peru. A colony of about 200 cats live in the park.
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Martin Truex Jr. (78) drives his burning car across the grass after a crash during the second of two NASCAR Sprint Cup series qualifying auto races at the Daytona International Speedway in Daytona Beach, Florida, USA, Feb. 20, 2014.
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Ice cover on the Great Lakes is seen in a NASA image taken by the GOES-East satellite on Feb. 19, 2014.
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Canada's winner Marielle Thompson, second-placed compatriot Kelsey Serwa, and Sweden's third-placed Anna Holmlund (L-R) jump on the podium after the women's freestyle skicross finals at the 2014 Sochi Winter Olympic Games in in Rosa Khutor, Russia.