The Fermi Gamma-ray Space Telescope was launched in 2008 by NASA to perform gamma-ray astronomy observations from low Earth Orbit. According to Wikipeida, its key scientific objects are:
- To understand the mechanisms of particle acceleration in active galactic nuclei (AGN), pulsars, and supernova remnants (SNR).
- Resolve the gamma-ray sky: unidentified sources and diffuse emission.
- Determine the high-energy behavior of gamma-ray bursts and transients.
- Probe dark matter (e.g. by looking for an excess of gamma rays from the center of the Milky Way) and early Universe.
- Search for evaporating primordial micro black holes (MBH) from their presumed gamma burst signatures [Hawking Radiation component].
Source (Physical Review Letters) (Wikipedia)