3 articles
Planetary parade
A planetary parade is a popular, non-technical name for several planets appearing in Earth's sky at once along a line or arc, a line-of-sight effect along the ecliptic.
Transit of Mercury
A transit of Mercury is Mercury's passage across the Sun's disk as seen from Earth, an event that happens about 13 times per century, first observed in 1631.
Transit of Venus
A transit of Venus, or transit of planet Venus, is the passage of Venus across the Sun's face as seen from Earth, occurring in pairs eight years apart.