Inferior and superior planets

High school (ages 12+)
Space & Astronomy

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/inferior-and-superior-planets

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the key astronomical events?Inferior planets exhibit transits across the Sun; superior planets experience oppositions
2. What is the difference between inferior and superior planets?Inferior planets are closer to the Sun than Earth, so they orbit inside Earth's orbit. Superior planets are farther from the Sun, orbiting outside Earth's orbit.
3. Why do Mercury and Venus always stay near the Sun in the sky?Because they are inferior planets, their orbits are inside Earth's, so they can only appear within a limited angle from the Sun.

Semi-major Axis: Half of the longest diameter of an ellipse, representing the average distance from the center to the orbit's edge.
Synodic Period: The time it takes for a planet to return to the same position in the sky relative to the Sun, as observed from Earth.
Sidereal Period: The time it takes for a planet to complete one full orbit around the Sun relative to the distant stars.
Elongation: The angular separation between a planet and the Sun as seen from Earth.