Uploaded April 2026 | Updated September 2026, 1 day ago

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Just for fun, I decided to do a visual analysis of two images of the M1 The Crab Nebula, taken by the Hubble Space Telescope in 1999 and 2024, to see the rate of the nebula's expansion.

My Geogebra analysis.
geogebra.org/geometry/r66tksu4

Article by Mauri Rosenthal describing how he photographed the Crab Nebula
aaa.org/2022/02/01/shooting-the-crab

Article describing the Pueblo imagery in Chaco Canyon.
https://www2.hao.ucar.edu/education/prehistoric-southwest/supernova-pictograph

Nice article about Charles Messier
lindahall.org/about/news/scientist-of-the-day/charles-messier

0:00 Intro
1:11 History of observing the nebula
3:08 Four images over time
4:00 Analyze one spot
4:47 Parametric equations in Geogebra
7:32 Cataloging 6 more spots
9:17 Finding “time zero”
14:14 For fun: How big?