Venus orbits the Sun on a path interior to the Earth's orbit. As a result, the position of Venus relative to both the Earth and the Sun causes Venus to have phases, similar to those of the Moon. Mercury also has phases. Relative to Earth's position, where on Venus' orbit would we expect to see the crescent phase? (Draw a picture if it helps.)
- When Venus is on the far side of the Sun from the Earth, but not directly opposite (Earth-Sun-Venus angle between 90-180 degrees).
- When Venus is directly between the Earth and the Sun.
- When Venus is on the near side of the Sun as the Earth, but not directly between (Earth-Sun-Venus angle between 0-90 degrees).
- When Venus is on the opposite side of the Sun from the Earth.