Hubble captured the new photos on April 10, whenComet ISONwas slightly closer than Jupiter. At the time the icy wanderer was about 386 million miles (621 million kilometers) from the sun and 394 million miles (634 million km) from Earth.
The new images are already helping astronomers take a bead on the mysterious Comet ISON, which may shine as brightly as the full moon when it makes its closest pass by the sun in late November. (The comet poses no threat to Earth, NASA has said.) [Photos of Comet ISON in Night Sky]
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