Radio astronomy is a subfield of astronomy that studies celestial objects at radio frequencies. The first detection of radio waves from an astronomical object was in 1932, when Karl Jansky at Bell Telephone Laboratories observed radiation coming from the Milky Way. Subsequent observations have identified a number of different sources of radio emission. These include stars and galaxies, as well as entirely new classes of objects, such as radio galaxies, quasars, pulsars, and masers. The discovery of the cosmic microwave background radiation, regarded as evidence for the Big Bang theory, was made through radio astronomy.
If you are interested in learning about Radio astronomy check out the presentation by Chris Bailey in the link below.
There is also a link to a live meteor scanner down in the west country that shows that there are Meteors passing through the earth upper atmosphere all the time , not just the recognised Meteor Showers. click on the image to be rerouted to the Meteorscan.com website.