With modern electronics, it is relatively easy to build your own radio telescope. To understand how it can be done, check out a recent paper by Jack Phelps posted to the arXiv preprint server.
With modern electronics, it is relatively easy to build your own radio telescope. To understand out how it can be done, check out a recent paper by Jack Phelps. He outlines in detail how you can ...
The answer is: a radio telescope that can track hydrogen in the Milky Way as well as the velocities of hydrogen clouds via their Doppler shifts, according to a paper by [Jack Phelps] titled ...