Halley's Comet

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/halleys-comet

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 orbital designation?1P/Halley
2. What is the orbital period range?72 to 80 years
3. Why does Halley's Comet come back so often?It follows a predictable orbit around the Sun, so it returns roughly every 72 to 80 years. Scientists discovered this pattern by studying past sightings.
4. How did scientists learn that Halley's Comet is the same each time?In 1705, Edmond Halley compared old records of comets from 1531, 1607, and 1682 and realized they were the same object. He predicted it would return in 1758, which was later confirmed.

Retrograde Orbit: An orbit in which an object moves in the opposite direction to the primary body's rotation.
Sublimation: The process where a solid turns directly into a gas without becoming a liquid first.
Albedo: The measure of how much light a surface reflects; a low albedo means it's dark.
Astronomical Unit (AU): The average distance between the Earth and the Sun, used as a unit of measurement in space.