The Science Asylum | We Can't Measure* Distance In Outer Space! @ScienceAsylum | Uploaded 11 months ago | Updated 1 hour ago
Get Nebula for 40% off with my link: go.nebula.tv/scienceasylum
Then watch my next video early: nebula.tv/videos/scienceasylum-this-important-principle-is-always-explained-wrong
We can't measure the distance to astronomical objects directly, so we have to be creative. That's why we need the cosmic distance ladder. It's a serious of techniques we use to calculate astronomical distances indirectly.
Nick Lucid - Host, Writer, Editor, Animator
Em Lucid - Producer
Nora Bailey - Researcher, Fact-Checker
________________________________
VIDEO ANNOTATIONS/CARDS
Black Hole Misconceptions:
youtu.be/JAUObgaGnNI
________________________________
RELATED YOUTUBE VIDEOS
SciShow Space on Distance Ladder:
youtu.be/rV-Z6jk9Fkw
________________________________
SUPPORT THE SCIENCE ASYLUM
Patreon:
http://www.patreon.com/ScienceAsylum
YouTube Membership:
youtube.com/channel/UCXgNowiGxwwnLeQ7DXTwXPg/join
Advanced Theoretical Physics (Paperback):
http://www.lulu.com/shop/nick-lucid/advanced-theoretical-physics-a-historical-perspective/paperback/product-24250687.html
Advanced Theoretical Physics (eBook):
gumroad.com/l/ubSc
Merchandise:
http://shop.spreadshirt.com/scienceasylum
________________________________
HUGE THANK YOU TO THESE SUPPORTERS
Asylum Counselors:
Bosphorus
Asylum Orderlies:
Dhruv Singhal, Medec Hurtz
Einsteinium Crazies:
Benjamin Sharef, Eoin O'Sullivan, Jonathan Lima, Joseph Salomone, Kevin Flanagan, Sean K, YouTubeviewer2014
Plutonium Crazies:
Al Davis, Compuart, Ellis Hall, Fabio Manzini, Kevin MacLean, LT Marshall, Rick Myers, Vid Icarus
Platinum Crazies:
Clayton Bruckert, David Johnston, Jonathan Reel, Joshua Gallaghe, Marino Hernandez, Mikayla Eckel Cifrese, Mr. Orn Jonasar, Olga Cooperman, Thomas V Lohmeier
________________________________
SOURCES
Radar Ranging:
doi.org/10.1016/0019-1035(73)90002-X
ilrs.gsfc.nasa.gov/science/scienceContributions/lunar.html
Parallax:
doi.org/10.1167/9.1.10
https://sci.esa.int/web/gaia/-/53278-measuring-stellar-distances-by-parallax
https://www.esa.int/Science_Exploration/Space_Science/Gaia/Gaia_factsheet.
doi.org/10.3847/1538-3881/aacb21
Cepheid Variables:
http://astro.wku.edu/labs/m100/PLrelation.html
https://www.atnf.csiro.au/outreach/education/senior/astrophysics/variable_cepheids.html
doi.org/10.17226/9585
doi.org/10.1086/126870
Type 1a Supernovas:
arxiv.org/abs/0705.0726
doi.org/10.1086/186970
doi.org/10.1146/annurev.aa.30.090192.002043
arxiv.org/abs/1608.04192
Cosmological:
https://astro.ucla.edu/~wright/CosmoCalc.html
arxiv.org/abs/astro-ph/9905116
doi.org/10.1093/astrogeo/aty268
iopscience.iop.org/article/10.3847/2041-8213/ac9b22
arxiv.org/abs/2208.13642
________________________________
LINKS TO COMMENTS
youtube.com/watch?v=RFXFevguldQ&lc=UgyurT3TBd7MqFgtvNh4AaABAg
youtube.com/watch?v=RFXFevguldQ&lc=Ugwr83-b5STb9r8baVh4AaABAg
youtube.com/watch?v=RFXFevguldQ&lc=UgyrZEuxWhBij4PDqzF4AaABAg
youtube.com/watch?v=RFXFevguldQ&lc=Ugz4R9pNEJgGsiJ8lLJ4AaABAg
________________________________
IMAGE/VIDEO CREDITS
Apollo Retrorefector:
commons.wikimedia.org/wiki/File:Apollo_11_Lunar_Laser_Ranging_Experiment.jpg
nasa.gov/image-article/retroreflectors-from-apollo-mars
Deep Field Flythrough:
svs.gsfc.nasa.gov/31035
Gaia Animation:
https://www.esa.int/ESA_Multimedia/Videos/2019/10/Gaia_astronomical_revolution
Milky Way (Artist Rendition):
images.nasa.gov/details/PIA10748
Type 1a Supernova:
svs.gsfc.nasa.gov/13852
commons.wikimedia.org/wiki/File:Record-breaking_supernova_in_the_CANDELS_Ultra_Deep_Survey.jpg
Barred Spiral Galaxy (NGC 1300):
images.nasa.gov/details/GSFC_20171208_Archive_e002154
Redshift Cube:
svs.gsfc.nasa.gov/14105
Redshift Zoom:
svs.gsfc.nasa.gov/14301
Galaxy GLASS-z12:
commons.wikimedia.org/wiki/File:NASA-GLASS-z13-Closeup-JWST-20220722.jpg
________________________________
TIME CODES
00:00 Cold Open
00:22 Introduction
02:05 Radar Ranging
04:17 Inverse Square Law
04:57 Stellar Parallax
08:46 Standard Candles
10:58 Cepheid Variable Stars
12:58 Type 1a Supernovas
15:15 Cosmological Redshift
18:37 Summary
19:44 Nebula Ad
20:52 Outro
21:05 Featured Comment
Get Nebula for 40% off with my link: go.nebula.tv/scienceasylum
Then watch my next video early: nebula.tv/videos/scienceasylum-this-important-principle-is-always-explained-wrong
We can't measure the distance to astronomical objects directly, so we have to be creative. That's why we need the cosmic distance ladder. It's a serious of techniques we use to calculate astronomical distances indirectly.
Nick Lucid - Host, Writer, Editor, Animator
Em Lucid - Producer
Nora Bailey - Researcher, Fact-Checker
________________________________
VIDEO ANNOTATIONS/CARDS
Black Hole Misconceptions:
youtu.be/JAUObgaGnNI
________________________________
RELATED YOUTUBE VIDEOS
SciShow Space on Distance Ladder:
youtu.be/rV-Z6jk9Fkw
________________________________
SUPPORT THE SCIENCE ASYLUM
Patreon:
http://www.patreon.com/ScienceAsylum
YouTube Membership:
youtube.com/channel/UCXgNowiGxwwnLeQ7DXTwXPg/join
Advanced Theoretical Physics (Paperback):
http://www.lulu.com/shop/nick-lucid/advanced-theoretical-physics-a-historical-perspective/paperback/product-24250687.html
Advanced Theoretical Physics (eBook):
gumroad.com/l/ubSc
Merchandise:
http://shop.spreadshirt.com/scienceasylum
________________________________
HUGE THANK YOU TO THESE SUPPORTERS
Asylum Counselors:
Bosphorus
Asylum Orderlies:
Dhruv Singhal, Medec Hurtz
Einsteinium Crazies:
Benjamin Sharef, Eoin O'Sullivan, Jonathan Lima, Joseph Salomone, Kevin Flanagan, Sean K, YouTubeviewer2014
Plutonium Crazies:
Al Davis, Compuart, Ellis Hall, Fabio Manzini, Kevin MacLean, LT Marshall, Rick Myers, Vid Icarus
Platinum Crazies:
Clayton Bruckert, David Johnston, Jonathan Reel, Joshua Gallaghe, Marino Hernandez, Mikayla Eckel Cifrese, Mr. Orn Jonasar, Olga Cooperman, Thomas V Lohmeier
________________________________
SOURCES
Radar Ranging:
doi.org/10.1016/0019-1035(73)90002-X
ilrs.gsfc.nasa.gov/science/scienceContributions/lunar.html
Parallax:
doi.org/10.1167/9.1.10
https://sci.esa.int/web/gaia/-/53278-measuring-stellar-distances-by-parallax
https://www.esa.int/Science_Exploration/Space_Science/Gaia/Gaia_factsheet.
doi.org/10.3847/1538-3881/aacb21
Cepheid Variables:
http://astro.wku.edu/labs/m100/PLrelation.html
https://www.atnf.csiro.au/outreach/education/senior/astrophysics/variable_cepheids.html
doi.org/10.17226/9585
doi.org/10.1086/126870
Type 1a Supernovas:
arxiv.org/abs/0705.0726
doi.org/10.1086/186970
doi.org/10.1146/annurev.aa.30.090192.002043
arxiv.org/abs/1608.04192
Cosmological:
https://astro.ucla.edu/~wright/CosmoCalc.html
arxiv.org/abs/astro-ph/9905116
doi.org/10.1093/astrogeo/aty268
iopscience.iop.org/article/10.3847/2041-8213/ac9b22
arxiv.org/abs/2208.13642
________________________________
LINKS TO COMMENTS
youtube.com/watch?v=RFXFevguldQ&lc=UgyurT3TBd7MqFgtvNh4AaABAg
youtube.com/watch?v=RFXFevguldQ&lc=Ugwr83-b5STb9r8baVh4AaABAg
youtube.com/watch?v=RFXFevguldQ&lc=UgyrZEuxWhBij4PDqzF4AaABAg
youtube.com/watch?v=RFXFevguldQ&lc=Ugz4R9pNEJgGsiJ8lLJ4AaABAg
________________________________
IMAGE/VIDEO CREDITS
Apollo Retrorefector:
commons.wikimedia.org/wiki/File:Apollo_11_Lunar_Laser_Ranging_Experiment.jpg
nasa.gov/image-article/retroreflectors-from-apollo-mars
Deep Field Flythrough:
svs.gsfc.nasa.gov/31035
Gaia Animation:
https://www.esa.int/ESA_Multimedia/Videos/2019/10/Gaia_astronomical_revolution
Milky Way (Artist Rendition):
images.nasa.gov/details/PIA10748
Type 1a Supernova:
svs.gsfc.nasa.gov/13852
commons.wikimedia.org/wiki/File:Record-breaking_supernova_in_the_CANDELS_Ultra_Deep_Survey.jpg
Barred Spiral Galaxy (NGC 1300):
images.nasa.gov/details/GSFC_20171208_Archive_e002154
Redshift Cube:
svs.gsfc.nasa.gov/14105
Redshift Zoom:
svs.gsfc.nasa.gov/14301
Galaxy GLASS-z12:
commons.wikimedia.org/wiki/File:NASA-GLASS-z13-Closeup-JWST-20220722.jpg
________________________________
TIME CODES
00:00 Cold Open
00:22 Introduction
02:05 Radar Ranging
04:17 Inverse Square Law
04:57 Stellar Parallax
08:46 Standard Candles
10:58 Cepheid Variable Stars
12:58 Type 1a Supernovas
15:15 Cosmological Redshift
18:37 Summary
19:44 Nebula Ad
20:52 Outro
21:05 Featured Comment
