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Saturday, January 26, 2008

Dazzling "double planet"


Dazzling "double planet"
For the past several months, dazzling Venus has been prominent in our morning sky. And about a week ago, brilliant Jupiter also began to emerge from out of the glare of the Sun.
The two planets are currently rising out of the east-southeast horizon about two hours before sunrise.
From now through the end of January, the gap between the two will noticeably close, until on Feb. 1 they'll be separated by just over one-half degree, which is roughly the apparent width of the moon (The width of your fist, held at arm's length roughly corresponds to 10 degrees). Jupiter will shine brilliantly at magnitude -1.9, yet it will appear only 1/7 as bright as Venus, which will gleam at magnitude -4.0.
Together they will make for a spectacular "double planet" low in the dawn twilight. In the mornings thereafter they will appear to slowly separate, but before they have a chance to get too far apart the moon will join the picture.

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