Astronomy
Opposition
When a planet is closest to Earth and brightest
Definition
Opposition occurs when a superior planet (Mars, Jupiter, Saturn, etc.) is directly opposite the Sun from Earth's perspective. At opposition, the planet is closest to Earth, appears largest in our sky, and is visible all night. This is the best time for planetary imaging. Jupiter reaches opposition every 13 months, Saturn every 12.5 months, Mars every 26 months.
Related Terms
See It In Action
Learn how Opposition is used in planetary imaging with our step-by-step guides:
Browse all glossary terms
Put Your Knowledge to Practice
Now that you understand Opposition, try processing your own planetary video with Uranum.
Start Processing