Studies of the most energetic gamma rays and cosmic rays may reveal cosmological information on early relics and the far infrared background. In addition, research in this area includes direct searches for low energy dark matter candidates such as WIMPS. Some of us at Chicago are leaders in Auger and JEM-EUSO projects.

• Dark Energy Survey (DES)
• Dark Matter In CCDs (DAMIC)
• Laser Interferometer Gravitational-wave Observatory (LIGO)
• Pierre Auger Observatory (AUGER)
• Probe of Extreme Multi-Messenger Astrophysics (POEMMA)
• Very Energetic Radiation Imaging Telescope Array System (VERITAS)

Past projects: Center for Magnetic Self Organization in Astrophysical and Laboratory Plasmas (CMSO); Extreme Universe Space Observatory at the Japanese Module (JEM-EUSO); Extreme Universe Space Observatory on a Super Pressure Balloon (EUSO-SPB); Joint Institute for Nuclear Astrophysics (JINA); Sloan Digital Sky Survey (SDSS)