noun
transit over the Sun
Astronomical term for a planet passing directly between Earth and the Sun, appearing as a small dot moving across the solar disk.
金星の太陽面通過は、次の世紀まで見られない。
The transit of Venus over the Sun won't be visible again until the next century.
Compound of 太陽 (sun), 面 (surface), and 通過 (passage, transit).