Occultation
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An occultation is an event that occurs when one object is hidden from the observer by another object that passes between them. The term is often used in astronomy, but can also refer to any situation
Occultation of Uranus during the lunar eclipse on 8 November 2022.
Jupiter (the bright object in the upper right) a few minutes before being occulted by the Moon on 16 June 2005.
A grazing occultation of Rhea by Dione, two moons of Saturn, imaged by Cassini–Huygens.
Syzygy (astronomy)
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In astronomy, a syzygy is a roughly straight-line configuration of three or more celestial bodies in a gravitational system.
A syzygy occurs during eclipses (numbers 1, 2, 3, 4).
Jupiter (top), Venus (lower left), and Mercury (lower right) above La Silla Observatory, Chile (May 26, 2013)
Apparent planetary alignment involving Mercury, Venus, Mars, and Jupiter; the Moon is also shown, as the brightest object.
Full Moon 2010