A star’s distance from Earth affects its brightness

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Published on February 5, 2023 by

Feeling the sun’s warm rays on our face during winters and gazing at the stars in the night sky is a delightful experience. Humans have been studying stars for about thousands of years. In this video, students will be taken on a journey to explore some mighty discoveries related to stars and our universe. Sun is the closest star to Earth and the biggest object in our solar system. That is why is appears big and bright on Earth. Despite being larger than the sun, other stars in our universe, such as Sirius, Rigel, and Betelgeuse, appear dimmer and smaller on Earth, because they are far away from Earth. We can use a planisphere to find stars. Astronomers, however, use much more complex instruments to study stars, such as the Kelper telescope.

This video satisfies the 5-ESS1-1 requirement of fifth-grade science proficiency.

Students who demonstrate understanding can: 5-ESS1-1 Support an argument that differences in the apparent brightness of the sun compared to other stars is due to their relative distances from Earth.

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