APOD
Astronomy Picture of the Day
Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
The Red Sprite and the Tree
Explanation: The sprite and tree could hardly be more different. To start, the red sprite is an unusual form of lightning, while the tree is a common plant . The sprite is far away -- high in Earth's atmosphere , while the tree is nearby -- only about a football field away. The sprite is fast -- electrons streaming up and down at near light's speed , while the tree is slow -- wood anchored to the ground. The sprite is bright -- lighting up the sky, while the tree is dim -- shining mostly by reflected light. The sprite was fleeting -- lasting only a small fraction of a second, while the tree is durable -- living now for many years. Both however, when captured together, appear oddly similar in this featured composite image captured early this month in France as a thunderstorm passed over mountains of the Atlantic Pyrenees .
Your Sky Surprise: What picture did APOD feature on your birthday? (post 1995)
| Date | September 18, 2023 |
|---|---|
| Credit | Credit & Copyright: Maxime Villaeys |
| Authors & editors: | Robert Nemiroff (MTU) & Jerry Bonnell (UMCP) |
| A service of: |
ASD at NASA / GSFC, NASA Science Activation & Michigan Tech. U. |



