Exploring Starlight Part 1 - Light from the Stars
Channel: Astronomy with Mr Guerin
Date: 2022-08-06

Why do stars shine? What colour are they? And what can we learn by analysing starlight?

This video will tell you everything you need to answer these questions in EdExcel's Astronomy GCSE.

Download the slideshow:
https://drive.google.com/drive/folders/1v7n69srfzFmgYxF9Vct6FKp3r_ZRqFjx


Image credits:

Proxima Centauri, ESA/Hubble, CC BY 4.0
https://esahubble.org/images/potw1343a/

The Sun's closest neighbors, NASA/Penn State University, public domain
https://photojournal.jpl.nasa.gov/catalog/PIA18003

Proxima Centauri parallax, NASA, public domain
https://www.nasa.gov/feature/nasa-s-new-horizons-conducts-the-first-interstellar-parallax-experiment

Stellar parallax, Srain, Wikimedia, public domain
https://commons.wikimedia.org/wiki/File:Stellarparallax_parsec1.svg

Inverse square law, Borb, Wikimedia, CC BY-SA 3.0
https://commons.wikimedia.org/wiki/File:Inverse_square_law.svg

Apparent and absolute magnitude, Bruce MacEvoy, handprint.com, CC BY 3.0
https://www.handprint.com/ASTRO/

Casio calculator, David R. Tribble, wikimedia, CC BY-SA 3.0
https://commons.wikimedia.org/wiki/File:Casio-fx115ES-5564.jpg

Fire, Aesomoman, wikimedia, public domain
https://commons.wikimedia.org/wiki/File:Fire.JPG

Human infrared, NASA/IPAC, wikimedia, public domain
https://commons.wikimedia.org/wiki/File:Human-Infrared.jpg

Solar spectrum data, NREL.gov, public domain
https://www.nrel.gov/grid/solar-resource/spectra-wehrli.html

Spectral lines continuous, Stkl, wikimedia, public domain
https://commons.wikimedia.org/wiki/File:Spectral-lines-continuous.svg

Spectral lines absorption, Stkl, wikimedia, public domain
https://commons.wikimedia.org/wiki/File:Spectral-lines-absorption.svg

Fraunhofer lines, Gebruiker:MaureenV and Phrood~commonswiki, wikimedia, public domain
https://commons.wikimedia.org/wiki/File:Fraunhofer_lines.svg

Doppler effect stationary, Lookang, wikimedia, CC BY-SA 3.0
https://commons.wikimedia.org/wiki/File:Dopplereffectstationary.gif

Doppler effect moving, Lookang, wikimedia, CC BY-SA 3.0
https://commons.wikimedia.org/wiki/File:Dopplereffectsourcemovingrightatmach0.7.gif

Redshift and blueshift, Aleš Tošovský, wikimedia, CC BY-SA 3.0
https://commons.wikimedia.org/wiki/File:Redshift_blueshift.svg

Redshift, Georg Wiora, wikimedia, CC BY-SA 2.5
https://commons.wikimedia.org/wiki/File:Redshift.svg