Today we continue our unofficial tour through the electromagnetic spectrum, stopping at the infrared spectrum – you feel it as heat. This section of the spectrum gives us our only clear view through dusty material to see newly forming planetary systems and shrouded supermassive black holes. And infrared lets us look out to the most distant regions of the observable universe, when the first building blocks of galaxies came together.
Our Hosts
Fraser Cain
Universe Today
Dr. Pamela Gay
CosmoQuest
Production by
- Richard Drumm, Audio Engineer
- Ally Pelphrey, Video Engineer
17 Seasons
700+ Episodes
Episode 131: Submillimeter Astronomy
Last week we examined the largest wavelength in the electromagnetic spectrum: radio. This week we get a little smaller… but not too small! And look at the next step in the spectrum, the submillimeter. Astronomers have only recently began exploiting this tiny slice of the spectrum, but the payoff has been huge.
Questions Show: Decelerating Black Holes, Earth-Sun Tidal Lock, and the Crushing Gravity of Dark Matter
This week we wonder if you can made a black hole by accelerating a mass, but then can you un-make it again? Will the Earth ever be tidally locked to the Sun? And can dark matter crush an unsuspecting space ship?
If you’ve got a question for the Astronomy Cast team, please email it in to info@astronomycast.com and we’ll try to tackle it for a future show. Please include your location and a way to pronounce your name.
Episode 130: Radio Astronomy
Astronomers are very resourceful, when it comes to light, they use the whole spectrum – from radio to gamma rays. We see in visible light, but that’s just a tiny portion of the spectrum. Today we’re going to celebrate the other end of the spectrum; the radio end, where photons really stretch out their wavelengths.
Recent Episodes
No Results Found
The page you requested could not be found. Try refining your search, or use the navigation above to locate the post.