Driftglass has a post “All Your Internet Traditions” to mark the 40th anniversary of the internet (when you go over to read his post, click on the title if you are not aware of all internet traditions) which has led me all kinds of places, but finally to something I can’t believe I missed!
John Philip Sousa composed a march for military band titled “Transit of Venus” in 1883 to celebrate a rare astronomical phenomena that occurred on December 6, 1882 — Venus Venus passing directly between the Sun and Earth. You can listen to it here.
Transits of Venus occur in a pattern that repeats every 243 years. Pairs of transits eight years apart are separated by long gaps of 121.5 years and 105.5 years. The first scientific observation of this rare event was in 1639, though it had been predicted by Johannes Kepler in 1627.
Transit of Venus photographed from Prime Focus by Kavan Ratnatunga, 2004 June 8th
The last transit of Venus was on June 8, 2004, the next will be on June 6, 2012. There will not be another for 105.5 years, in December 2117.
The planet’s bone-dry surface is hot enough to melt lead. Venus’ atmosphere, 90 times heavier than Earth’s, is almost pure carbon dioxide, a greenhouse gas that traps solar heat. The thick blanketing clouds don’t help; they trap heat, too,
View of Venus taken by NASA's Pioneer Venus probe as it approached Venus in December 1978.
and they’re made of sulfuric acid. Robot-spaceships sent to Venus have landed, but they never last long. Russia’s Venera 13 lander operated for 127 minutes — the all-time record — before being overwhelmed by the acid, the heat, and the crushing pressure of Venus’ atmosphere.