Wednesday, January 28, 2009

What shines?

Beta Crucis Through The A RingWhat moon is that? How can a moon of Saturn be so centered on the A Ring?

Well, it can't. That's no moon, folks, that's a star! And it's behind the rings.

It's Mimosa, aka Beta Crucis, the bright left-hand star in the Southern Cross. The rings, being particles, let light through, and this star's so bright it looks as though it's in front.


As always, see the Cassini home page for more.

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