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.
Lemmon Tree
Explanation: The tree is not in danger. That's because the comet pictured just above it, Comet C/2025 A6 (Lemmon) , is far in the distance, well away from the Earth. Comet Lemmon now continues to brighten as it arcs through the inner Solar System , even though it has passed its nearest to the Sun -- because it is now approaching the Earth . The comet will likely appear brightest when it is at its closest to the Earth next week, then closing to about half the Earth-Sun distance . Comet Lemmon may then be visible to the unaided eye, but it is more likely to be imaged by a camera phone -- if you know where to look . Comet Lemmon, previously best visible in the morning, is now also visible in the evening sky for northern observers: look above the western horizon just after sunset. The featured image , centered on an unsuspecting European beech tree, was taken in Slovenia about ten days ago.
| Date | October 13, 2025 |
|---|---|
| Credit | Image Credit & Copyright: Uroš Fink |
| Authors & editors: | Robert Nemiroff (MTU) & Jerry Bonnell (UMCP) |
| A service of: |
ASD at NASA / GSFC, NASA Science Activation & Michigan Tech. U. |




