Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions about cosmic rays and cosmic background radiation.

Cosmic rays are immensely high-energy radiation, mainly originating outside the Solar System.

Cosmic background radiation is electromagnetic radiation from the sky with no discernible source.

Resources

history | excerpt history