Optical Telescopes Part I

The beginning of modern astronomy is often linked to Galileo building his first telescope in 1609 — roughly 400 years ago! While he was not the first person to use a telescope, Galileo made many fascinating discoveries, ultimately revealing that … Continue reading

Radio Telescopes

The Sun and stars emits radio waves — not just visible and infrared light. In the 1930s, Karl Jansky built the first devise to “listen” to the sun, collecting radio waves from far off stars and focusing them onto a … Continue reading