Wednesday, December 26, 2007

How many moons?

How many of Saturn's moons can you see here? (Select the image for a bigger view.)

Saturn and four moons

A test of your eyes today: this picture of Saturn shows four moons:
Tethys (1,071 kilometers, 665 miles across) is seen against the black sky to the left of the gas giant's limb. Brilliant Enceladus (505 kilometers, 314 miles across) sits against the planet near right. Irregular Hyperion (280 kilometers, 174 miles across) is at the bottom of the image, near left. Much smaller Epimetheus (116 kilometers, 72 miles across) is a speck below the rings directly between Tethys and Enceladus. Epimetheus casts an equally tiny shadow onto the blue northern hemisphere, just above the thin shadow of the F ring.
Me? I can just barely spot Epimetheus, but only because I know it's there...

Cassini's page for this image

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1 Comments:

At 10:54 AM, December 27, 2007 Blogger Unknown had this to say...

I spotted Epimetheus, but I thought it might just be a spot on the screen. It's very faint compared to the other two.

 

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