Solar X-rays:

Geomagnetic Field:

Below are listed some examples of frequency bands used by Radio Astronomy. The link below the list shows a lot more (from the SETI site). SETI stands for Search for Extraterrestrial Intelligence). More explanations for these frequencies can be found on this page and on the “Radio Astronomy” main page (see left column for link).

Channel 37 National Radio Astronomy Quiet Zone  608 to 614 Mhz

Hydrogen 21 centimeter line 1420.40575177 MHz

“Wow! Signal” discovered at 1406 & 430 Mhz

OH Hydroxyl Radical  1606 - 1722 Mhz

Water Vapor 183 Ghz

Ammonia (NH3)  23 Ghz


Complete list of significant frequencies and allocated bands for Radio Astronomy

“What are Gamma Rays?” Video from NASA: