File:Geminga-1.jpg

Summary
Geminga is a very weak neutron star and the pulsar next to us, which almost only emits extremely hard gamma-rays, but no radio waves.

The supernova explosion 300 000 years ago, which left behind Geminga, could be responsible for the existence of the Local Bubble. Some thousand years ago our Sun entered this several hundred light-years big area, which is nearly dust-free.

Licensing
The image is non-free fair use in Gamma-ray astronomy.

Fair use for Gamma-ray astronomy
To illustrate the subject in question, its detection and effect, since no picture can be obtained of the high-energy gamma-ray radiation itself.

The image linked here is claimed to be used under fair use as:
 * 1) it is a scientifically significant image of a gamma-ray/X-ray astronomy phenomenon;
 * 2) it is of much lower resolution than the original (copies made from it will be of very inferior quality)
 * 3) the photo is only being used for informational/educational purposes.
 * 4) Its inclusion in the article adds significantly to the article because it shows the phenomenon depicted in this article and how it has a significant impact on gamma-ray astronomy to the general public.