What is a transit of Venus?

When Venus passes directly between earth and generic cialis no perscription the sun, we see the distant planet as a small dot gliding slowly across the face of www.unifem.it the sun.  Historically, this rare alignment is how we measured the size of our solar system.  The view is like a front row seat to the where can i purchase levitra transit method, by which we find planets around distant stars.

When is it?

The last transit of Venus occurred June 5-6, 2012.  The next pair of Sun-Venus-Earth alignments will be December 2117 and 2125.  Look for a transit of Mercury in 2016.

What happened in 2012?

People across the globe witnessed and celebrated science in action. Observing parties, public outreach, live webcasts, art exhibits, historic displays, music , and more set the 2012 transit of Venus apart as a collective science experience. 

Transit of Venus at sunset

See A Community Celebrates for a summary of the 2012 Transit of Venus from Michiana.

Transit of Venus Story

Rare Alignment

Sun, Venus, and earth align for transit of Venus
A transit of Venus occurs when Venus passes directly between the sun and earth.  This alignment is rare, coming in pairs that are eight years apart but separated by over a century.  The most recent transits of Venus were a thrilling sight in June 2004 and 2012, with the next transit of Venus pair occurring in December 2117 and 2125. 

Global Expeditions

Parallax angle from two locations
Observers from two locations on earth see two distinct paths (red and blue) of Venus across the sun.  The slight difference in times Venus takes, moving from edge to edge, can mathematically unlock the distance from earth to the sun, and thus the size of our solar system.  For 17th & 18th century transits, intrepid explorers set out to answer a leading question of mankind.  Not all of them made the voyage back home.

Mystery of "Black Drop"

Simulated black drop smearJust before or after the buy cialis in new zealand circular black dot of http://www.pjr.com/how-much-cialis Venus seems to touch the edge of the sun, a peculiar "black drop effect" sometimes occurs between the contact points.  A ligament of darkness smears the juncture of Venus and the sun.  You can see a similar anomaly if you almost pinch your thumb and forefinger together.  Just before you sense contact, a black feature spans your two digits.

Transits Lead the Hunt

Kepler mission's field of view near Summer Triangle
Once again, transits are on the leading edge of new discoveries.  The NASA Kepler mission and others are using the transit method to find habitable planets around distant stars.  The Kepler spacecraft monitors over 150,000 stars, looking for periodic dips in their light curves which reveal the presence of companion planets.  You, too, can join this quest for new worlds. 

4-Minute Summary

Video: the Transit of Venus
Animation and http://www.unifem.it/cialis-online-50mg visual effects by Patrick McPike.

Get Your Gear

Three t-shirt designs

Three designs of T-shirts at reduced price from supporters of Transit of Venus outreach efforts.

Midwest Treasure: TROVE

Midwest Treasure: TROVE
Art exhibits, family activities, a bus tour, historic artifacts, lectures, Logo for TROVE Adventurewebcasts, telescope viewing, and more complemented the visual spectacle near the www.karlbarth.nl Michigan-Indiana border.  This hub of cheap cialis 2012 transit of Venus activity in Michiana celebrated the math, science, history, and art of the celestial phenomenon.

Safely See the Sun

Rear projection screen with transiting Venus
Protect your eyes.  There are several safe ways to observe the sun. 
  • Solar filtered telescope
  • Disposable "eclipse shades"
  • Rear projection screen
    (Build a Sun Funnel, above)
  • Live webcast
  • More

Recommended Links

Logo for Transit of Venus Project

Logo for NASA's Sun-Earth Day 2012

Logo for Facebook Group

Twitter logo

YouTube features transit of Venus videos

Artifacts at Harris Branch Library in Granger, IN

Transit of Venus history and information at Harris Branch Library, Granger, INTransit of Venus history and information at Harris Branch Library, Granger, INAn exhibit of Transit of Venus artifacts and information is open to the public at the Harris Branch Library in Granger, IN, with a portion of the display offering a glimpse into the US Naval Observatory expeditions from the cheap quality viagra perspective of Assistant Photographer Irvin Stanley of Indiana.  This is the first of two main exhibits in the region, with a second set of online viagra overnight display cases to feature the transit of Venus theme on the campus of Notre Dame.  Concurrently, individual historical artifacts are distributed locally at businesses and institutions as part of the TROVE Adventure treasure hunt.

The display in the left of the foyer as you enter will remain in place through May, whereas the the best place generic viagra effective exhibit on the right with the Irvin Stanley content will remain in place through the June 5 transit of Venus.  The library, which also hosts the Transit of Venus in Pastels art exhibit, is one of the stops on the exclusive Transit of Venus motor coach tour on June 5.

Read more: Artifacts at Harris Branch Library in Granger, IN



Cover of March 2012 issue of Planetarian journalPlanetarians have a key role in advocating for math and science during the buy levitra online canadian phamacy 2012 transit of Venus.  The March 2012 issue of Planetarian-Journal of the International Planetarium Society features ideas on how theaters, museums, and domed venues can seize the public's interest in the celestial phenomenon with public outreach.  Five planetarium programs relevant to transits are listed below. Full-dome video and flat-screen files--Audio, Dome, and Flat

Transit of Venus Stained Glass Window CollageA four-minute video, the Transit of Venus, is available in both high-resolution flat-screen and full-dome versions.  Created by Patrick McPike and Chuck Bueter, the video introduces the transit of Venus, its historical significance, and modern applications of only today order usa levitra online the transit method in the search for habitable planets around distant worlds. 

Multiple types and sizes of files (right) are available for free download, hosted courtesy of NASA:

[Note: Projector manufacturers have been asked to assist in getting the content to their users, such as by converting the dome master to a format suitable for their respective systems.  The ease of the task is dependent on the systems and recommended site brand cialis for sale their supporting network.  Thanks to those who step up to help distribute the free video.]

Read more: Planetarian


Pizza Transit

Pizza Transit logo adapted for the 2012 Transit of VenusWhat's in a name?  For Sarrah Brittin, a transit is a serendipitous alignment of Earth, Venus, the sun, dough, cheese, and toppings.  The Pizza Transit restaurant, established by Sarah's father in 1987 and now under her ownership, recently relocated to 215 E. Main St. in Niles, Michigan.  Pizza Transit original logoConcurrent with the restaurant's new environment are two new items on the menu: Transit of Venus Pizza and Black Drop Effect Pizza. 

The Transit of Venus Pizza takes on the characteristics of the celestial bodies seen during the transit, highlighted by spicy chorizo sausage, jalapeno peppers, and cheddar cheese.  The Black Drop Effect Pizza is a veggie simulation of the event itself, with spinach punctuated by black olives.  The interim orange logo, adapted by Lisa Taylor of online tramadol shipped to florida Taylor Design, plays on the original branding for Pizza Transit, shown in blue.
TROVE planning team meets at Pizza Transit
Thanks to Pizza Transit for sharing their enthusiasm for the 2012 transit of Venus and for hosting a gathering of the TROVE planning team, right.  Pizza Transit is also the http://www.markwellgroup.com.au/real-levitra-online site for a TROVE Adventure treasure hunt clue.  If you visit Pizza Transit to get your Keyword, be sure to pick up a pizza while you're there. You won't be disappointed.


Video: The Transit of Venus

Transit of Venus Stained Glass Window CollageThe Transit of Venus is a 4-minute video in high-resolution soon to be a free download in full-dome video for digital theaters. The mini-show summarizes the history and significance of the transit of Venus while preparing viewers for the June 5-6, 2012, spectacle.  The story segues from Jeremiah Horrocks' first sighting, to expeditions seeking to measure the size of the solar system, to the Kepler spacecraft detecting planets as they transit distant stars.

With animation and video effects by Patrick McPike, Multimedia Artist and Technical Director at the Adler Planetarium, the dome master is readily compatible with full-dome digital theaters.  The original song Morning Star by the band Transit of Venus from New Zealand is also available for free download.  Narrated by Douglas Osthimer.  Written and directed by Chuck Bueter.

Sermon Suggested by the Transit of Venus

Sermon Front Cover: Nature a Pledge of GraceTitle page of A Sermon Suggested by Transit of VenusOn the evening of December 6, 1882, after the transit of Venus had occurred earlier that day, Pastor George Dana Boardman delivered an eloquent sermon "to unfold and apply a great moral lesson which the transit of Venus suggests and viagra doses confirms."  On the title page is written:
Nature a Pledge of Grace.

Boardman writes that God expresses His commitment to man and His  promise through the immutable expressions of nature. The predictable movements of planets "testify to the unchangeableness of buy tramadol 800 nature's laws, that is to say, to the veracity of God's covenant of nature." That man can study those laws of nature and eke out predictions like the transit of Venus confirms the certainty of nature, itself a covenant from God.  We cannot break these laws, though they can break us.

Read more: Sermon Suggested by the Transit of Venus



Google's Zeitgeist feature rated the 2004 Transit of Venus as the world's #1 Most Popular Event for all of June 2004!  The 2012 transit of Venus is the last one in the 21st century--not seen again until 2117.  You don't want to miss this rare dance of the planets!

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