1. Galaxies that emit up to 106 times more radio frequency energy than is normally observed from galaxies are called ______________ ____________.
2. _______________ are the most distant objects astronomers have detected.
3. Quasars, blasars, and radio galaxies are examples of _________________ radio sources.
4. The planet in our solar system that emits the most intense radio waves is _____________.
5. An interesting feature of Io is the ___________ __________, which surrounds Jupiter and corresponds closely with Io’s orbit.
6. Lightning is an example of a source of natural RF _________________ for radio astronomy studies.
1. radio galaxies 2. Quasars 3. extra-galactic 4. Jupiter 5. plasma torus 6. interference
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