Mikhail Lomonosov coined the term “physical chemistry,” was an early advocate of the existence of atoms, and wrote poetry to get himself out of prison after being arrested for brawling. Along the way he became one of the greatest names in science.
On June 5, the planet Venus will appear to pass in front of the Sun as seen from the surface of the Earth. This phenomenon, called a transit of Venus, happens only a few times in 250 years. The next one will be in 2117 AD. Here's a guide to watching the once-in-a-lifetime event. But why does it matter?