NASA’s Fermi Gamma-ray Space Telescope has discovered a faint but sprawling glow of high-energy light around a nearby pulsar. If visible to the human eye, this gamma-ray “halo” would appear about 40 times bigger in the sky than a full Moon. This structure may provide the solution to a long-standing mystery about the amount of antimatter in our neighborhood.
![](https://scx1.b-cdn.net/csz/news/tmb/2019/fermimission.gif)
Source:
https://phys.org/news/2019-12-fermi-mission-links-nearby-pulsar.html