The Transit of Venus - The Last to Occur in Your Lifetime!
Late
in the afternoon of June 5 there will be a rare astronomical event - a transit
of Venus. How rare? The next occurrence will be December 10-11,
2117, so this is our last chance to see the transit of Venus in our lifetimes.
When Venus passes directly between earth
and the sun, we see the distant planet as a small dot gliding slowly
across the face of the sun. Historically, this rare alignment is how we
measured the size of our solar system.
Transits
of Venus occur in 243 year cycle with pairs of transits eight years apart
separated by long gaps of 121.5 years and 105.5 years. The last one was in June of 2004 but it
was cloudy that day. Transits of
Venus were used to help determine the distance between earth and sun and this
upcoming one is expected to help refine techniques for the search for
exoplanets.
If
the sky is clear, Rey Center Board Member and Resident Amateur Astronomer, Al Larsson, will be setting up a telescope at the Curious George Cottage
parking lot and you should plan to arrive by 6:00PM to see the beginning - the
transit starts at 6:03. We can
continue to watch the process until sunset.
IMPORTANT
NOTE: Al's scope has a special solar filter so the sun may be safely viewed. Without the proper filter the sun’s
rays could destroy the telescope but, more importantly, could instantly destroy
your vision! Don’t look at the sun
during this event and in particular don’t look with binoculars or a telescope
without special filtering like his.
Thanks to Al
Larsson for this post!
Here is hoping for clear skies so that we can all witness this historic event.