Touch the Sun: A NASA Braille Book (2005)

Chapter: 12. Coronal Mass Ejections Over Time

Previous Chapter: 11. Coronal Mass Ejection
Suggested Citation: "12. Coronal Mass Ejections Over Time." Noreen Grice. 2005. Touch the Sun: A NASA Braille Book. Washington, DC: Joseph Henry Press. doi: 10.17226/11219.

Figure 12.
Coronal Mass Ejections Over Time

Although the Sun teems with activity, solar activity varies over time. During solar maximum, the number of sunspots and coronal mass ejections increases. Years later, the Sun may have very few sunspots or eruptions.

Suggested Citation: "12. Coronal Mass Ejections Over Time." Noreen Grice. 2005. Touch the Sun: A NASA Braille Book. Washington, DC: Joseph Henry Press. doi: 10.17226/11219.

You will need to rotate the book clockwise to view the next image; the spine of the book should be facing up.


This is the Sun at two different times, on July 3, 1996 (on the left) and Dec. 4, 2001 (on the right). A solid line separates the two images.


Scan each image for brighter, raised areas of solar activity. Lower curved lines help outline areas of magnetic activity. Notice how active the Sun was during a solar maximum in 2001.


Credit: SOHO/EIT, NASA/ESA

Suggested Citation: "12. Coronal Mass Ejections Over Time." Noreen Grice. 2005. Touch the Sun: A NASA Braille Book. Washington, DC: Joseph Henry Press. doi: 10.17226/11219.

Changes in Solar Activity Over Time

Suggested Citation: "12. Coronal Mass Ejections Over Time." Noreen Grice. 2005. Touch the Sun: A NASA Braille Book. Washington, DC: Joseph Henry Press. doi: 10.17226/11219.

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Next Chapter: 13. Ultraviolet View of the Sun's Disk
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