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The evolution of the apparent diameter and phases of Venus. A planetary phase is a certain portion of a planet's area that reflects sunlight as viewed from a given vantage point, as well as the period of time during which it occurs. The phase is determined by the phase angle, which is the angle between the planet, the Sun and the Earth.
"Inferior planet" refers to Mercury and Venus, which are closer to the Sun than Earth is. "Superior planet" refers to Mars, Jupiter, Saturn, Uranus, and Neptune (the latter two added later), which are further from the Sun than Earth is. The terms are sometimes used more generally; for example, Earth is an inferior planet relative to Mars.
The Earth phase, Terra phase, terrestrial phase, or phase of Earth, is the shape of the directly sunlit portion of Earth as viewed from the Moon (or elsewhere extraterrestrially). From the Moon, Earth phases gradually and cyclically change over the period of a synodic month (about 29.53 days), as the orbital positions of the Moon around Earth ...
June features the shortest nights of the year across the Northern Hemisphere, but there will still be plenty to see during the abbreviated periods when the sun is below the horizon -- including a ...
The summer of 2024 will be a wild ride, astrologically speaking — and for more reasons than just the rare super blue moon that rose in August.. A total of five planets are going retrograde ...
The rising of a planet above the eastern horizon at sunset is called its acronycal rising, which for a superior planet signifies an opposition, another type of syzygy. When the Moon has an acronycal rising, it will occur near full moon and thus, two or three times a year, a noticeable lunar eclipse.
Four planets are set to align in April this year, ... On April 4, 2024, four planets will align on the same side of the sun as Earth. ... The last time all eight planets were aligned was on Dec ...
The same effect on the Moon has led to its tidal locking: its rotation period is the same as the time it takes to orbit Earth. As a result, it always presents the same face to the planet. [181] As the Moon orbits Earth, different parts of its face are illuminated by the Sun, leading to the lunar phases. [182]