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Astronomy Science Fair Project

What Makes Stars Twinkle?

Hard
What Makes Stars Twinkle? | Science Fair Projects | STEM Projects
Have you ever looked up at the night sky and wondered why stars twinkle? In this project, you'll explore the atmosphere and how it affects starlight. You'll also learn how astronomers use twinkling to collect data about stars and galaxies.

Hypothesis

The hypothesis is that the atmosphere between the star and the observer's eye causes starlight to twinkle.

Method & Materials

You will count star blink rates higher in the sky compared to stars lower in the sky, on a windy night compared to a still night, and at sea level compared to on a mountain top. You will also record the color of the star when it twinkles each time.
You will need a clear night, a telescope or binoculars, a notebook, and a pen or pencil.

Results

Through this project, you'll learn that the atmosphere between the star and the observer's eye causes starlight to twinkle. You'll also observe that the steadiness of images, or "seeing," is best when the twinkling is least.

Why do this project?

This science project is unique because it allows you to explore the atmosphere and how it affects starlight. You'll also learn how astronomers use twinkling to collect data about stars and galaxies.

Also Consider

Experiment variations to consider include counting star blink rates on a cloudy night compared to a clear night, and at different times of the day.

Full project details

You can find additional information and details for this science fair project here. Have fun exploring!

Related video

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