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Venus turns on its axis once every 243 days. What else is odd about that turning?
AIt runs top to bottom
BIt runs east to west
CIt stops twice a year
DIt speeds up at noon
Answer & Solution
Correct answer: B. It runs east to west
1. Radar bounced off Venus revealed both the rate and the direction of its spin.
2. The spin is retrograde, running east to west instead of west to east.
3. That backward turn may be the mark of a huge collision early in the planet's history.
_Source: OpenStax Astronomy (CC BY 4.0), section 10.1 The Nearest Planets: An Overview_