Wednesday, October 7, 2009

Saturn just misses Mercury and Venus


Over the next week, three planets can be found close to the eastern horizon in the morning twilight. The brightest, Venus is also the highest, at least initially. Saturn rises higher each morning, catching Mercury on the morning of October 8. A pair of binoculars will help see these two planets clearly.

As the mornings pass, Saturn continues moving higher, leaving Mercury behind and approaching Venus. On the 13th, Saturn and Venus lie closely together. Again, binoculars help separate the planetary pair. Saturn, then, moves higher, pulling away from Venus.

On the morning of the 16th, the thin crescent moon hangs just to the right of Venus and Saturn, making an interesting celestial triangle. The moon will be awash with earthshine. Now, that should be an empyreal sight!

Such is our view from Earth ...

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