Radio telescopes beam radio waves into space. To calculate the speed of the radio waves in space, which information, if any, is necessary?

In fact, this is one way astronomers can tell a signal created on Earth apart from an astronomical signal. If they are able to tune their receivers to a slightly higher or lower frequency and the signal disappears it is most likely an Earth based signal. Radio waves fall into three main categories with a variety of uses: Long Range communications.

Explanation:

co2reflects heat radiation back to earth buning coal and oil emits co2 globe warms