1. Swallowed whole
A rainbow trout fingerling peers out from the gullet of a northern pike at the Alaska Department of Fish & Game aquarium in Anchorage.
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2. A romp in Russia
A polar bear cub plays near his mother at the Moscow Zoo.
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3. Moonshot
Flying at nearly 35,000 feet, a jet passes over the disk of a winter half moon above Boston on Jan. 3 The jet leaves contrails in its wake due to the temperature difference between the hot engine exhaust and the cold air.
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4. Red Square reflection
The Kremlin's Spassky Tower and passers-by are reflected in the wet cobblestones of Moscow's Red Square on Feb. 13.
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5. A galaxy's sharp edge
An image produced by the Hubble Space Telescope, released March 1, shows a perfect "edge-on" perspective of the galaxy NGC 4013, with huge clouds of dust and gas extending above the galaxy's main disk.
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6. Light of the world
This composite image shows what Earth looks like at night. City lights highlight developed areas of the planet.
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7. Mother and child
An ethnic Albanian refugee from Selce, Macedonia, and her child look through the window of a bus as they arrive in Prizren in Kosovo on March 27, after fleeing the fighting in Macedonia two days earlier.
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8. A useful lesson
A German Shepherd named Pepper sits with two endangered Bengal tiger cubs and a cougar cub, far right, at the home of veterinarian Rob Zammit outside Sydney, Australia.
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9. Great white whale
A beluga whale swims in a tank at the Vancouver Aquarium.
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10.Puppy love
Crystal, a year-old black Labrador-Dalmatian mix, peers through a heart-shaped hole in a fence.
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