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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
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VIDEO ANNOTATIONS/CARDS
Black Hole Misconceptions:
• What Most People Get W...
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RELATED RU-vid VIDEOS
SciShow Space on Distance Ladder:
• The Cosmic Ladder That...
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SOURCES
Radar Ranging:
doi.org/10.1016/0019-1035(73)...
ilrs.gsfc.nasa.gov/science/sc...
Parallax:
doi.org/10.1167/9.1.10
sci.esa.int/web/gaia/-/53278-...
www.esa.int/Science_Explorati....
doi.org/10.3847/1538-3881/aacb21
Cepheid Variables:
astro.wku.edu/labs/m100/PLrela...
www.atnf.csiro.au/outreach/ed...
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...
arxiv.org/abs/1608.04192
Cosmological:
astro.ucla.edu/~wright/CosmoC...
arxiv.org/abs/astro-ph/9905116
doi.org/10.1093/astrogeo/aty268
iopscience.iop.org/article/10...
arxiv.org/abs/2208.13642
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LINKS TO COMMENTS
• JWST had a Turbulent H...
• JWST had a Turbulent H...
• JWST had a Turbulent H...
• JWST had a Turbulent H...
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IMAGE/VIDEO CREDITS
Apollo Retrorefector:
commons.wikimedia.org/wiki/Fi...
www.nasa.gov/image-article/re...
Deep Field Flythrough:
svs.gsfc.nasa.gov/31035/
Gaia Animation:
www.esa.int/ESA_Multimedia/Vi...
Milky Way (Artist Rendition):
images.nasa.gov/details/PIA10748
Type 1a Supernova:
svs.gsfc.nasa.gov/13852
commons.wikimedia.org/wiki/Fi...
Barred Spiral Galaxy (NGC 1300):
images.nasa.gov/details/GSFC_...
Redshift Cube:
svs.gsfc.nasa.gov/14105/
Redshift Zoom:
svs.gsfc.nasa.gov/14301/
Galaxy GLASS-z12:
commons.wikimedia.org/wiki/Fi...
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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
7 июн 2024