Aphelion: See Sun's Size Change Over Year on YouTube

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Thread starter tony873004
Start date Jul 4, 2016

In summary, "Aphelion" refers to the point in the Earth's orbit around the Sun where it is farthest away from the Sun. This occurs once a year, typically in early July. The Sun's size appears to change over the year due to the Earth's elliptical orbit around the Sun, with it appearing smaller at aphelion and larger at perihelion. However, the difference in size is only about 3.4% due to the small variation in the Sun's distance from Earth during its orbit. The Sun's apparent size changes can be seen in a time-lapse video on YouTube from the channel "SpaceRip". Understanding aphelion is important for understanding the Earth's orbit and its

Jul 4, 2016

tony873004

Science Advisor

Gold Member

I made a YouTube showing how the size of the Sun appears to change over the course of a year.

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Jul 4, 2016

Drakkith

Mentor

Very nice!

Related to Aphelion: See Sun's Size Change Over Year on YouTube

1. What is "Aphelion"?

"Aphelion" refers to the point in the Earth's orbit around the Sun where it is farthest away from the Sun. This occurs once a year, typically in early July.

2. Why does the Sun's size change over the year?

The Sun's size appears to change over the year due to the Earth's elliptical orbit around the Sun. When the Earth is at aphelion, it is farther away from the Sun and appears smaller in the sky. When it is at perihelion (closest point to the Sun), it appears larger.

3. How does the size of the Sun at aphelion compare to its size at perihelion?

The difference in the Sun's apparent size at aphelion and perihelion is very small, only about 3.4%. This is because the Sun's distance from Earth varies only slightly during its orbit.

4. How can I see the Sun's size change over the year on YouTube?

Aphelion: See Sun's Size Change Over Year is a YouTube video that uses time-lapse footage to show the Sun's apparent size change over the year. It is available on the channel "SpaceRip".

5. Why is it important to understand the concept of aphelion?

Understanding aphelion and perihelion is important for understanding the Earth's orbit and its relationship with the Sun. It also has implications for our seasons and climate. Additionally, studying the Sun's apparent size changes can provide insights into its activity and behavior.