Podcast: Galactic Dust, the Speed of Photons, and the Big Bang Calculations
Galactic Dust. Image credit: Hubble
[/caption]
Another week, another roundup of your questions. This week listeners asked: what is galactic dust anyway, and where does it come from? Why can photons move at the speed of light? And how can astronomers know what happened right after the Big Bang? And there’s even more. 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.
Click here to download the episode.
Or subscribe to: astronomycast.com/podcast.xml with your podcatching software.
Galactic Dust, the Speed of Photons, and the Big Bang Calculations – Transcript and show notes.
Recent Posts
First Light from Einstein Probe: A Supernova Remnant
On 9 January 2024, the Einstein probe was launched, its mission to study the night…
Galaxies Evolved Surprisingly Quickly in the Early Universe
Anyone familiar with astronomy will know that galaxies come in a fairly limited range of…
How Knot Theory Can Help Spacecraft Can Change Orbits Without Using Fuel
When a spacecraft arrives at its destination, it settles into an orbit for science operations.…
Another New Molecule Discovered Forming in Space
The list of chemicals found in space is growing longer and longer. Astronomers have found…
JWST Uses “Interferometry Mode” to Reveal Two Protoplanets Around a Young Star
The JWST is flexing its muscles with its interferometry mode. Researchers used it to study…
A Cold Brown Dwarf is Belching Methane Into Space
Brown dwarfs span the line between planets and stars. By definition, a star must be…