Mercury vs Venus

Here are two transit images that have been scaled so that the Sun is about the same size in each. The first image show a solar telescope (Halpha) view of Mercury crossing the Sun (still happening as I write this). The second shows Venus crossing the Sun back on 8th June 2004. It is interesting to see how the sizes of the two planets compare.

Mercury in H alpha
H alpha image from Hawaii of Mercury during transit on 8th November 2006 CREDIT: Haleakala Amateur Astronomers, Mauna Kea Visitor Information Station and Institute of Astronomy
Venus in H alpha

H alpha image from Jodrell Bank of Venus during transit on 8th June 2004 CREDIT: Anthony Holloway and Tim OBrien, Jodrell Bank Observatory

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Posted in astro blog by Stuart on Wednesday 08th Nov 2006 (20:32 GMT) | Permalink
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