Articles
Bryant, G. “The Allure of Wolf-Rayet Stars.” Sky & Telescope (February 2023): 13. On the later evolution of really massive stars.
Calderwood, T. “The Great Dimming of Betelgeuse.” Sky & Telescope (March 2021): 14. On the variability of this red giant star.
Garlick, M. “The Fate of the Earth.” Sky & Telescope (October 2002): 30. What will happen when our Sun becomes a red giant.
Harris, W. & Webb, J. “Life Inside a Globular Cluster.” Astronomy (July 2014): 18. What would night sky be like there?
Kalirai, J. “New Light on Our Sun’s Fate.” Astronomy (February 2014): 44. What will happen to stars like our Sun between the main sequence and the white dwarf stages.
Kruijssen, J. “Relics of a Distant Past.” Sky & Telescope (July 2021): 14. On globular clusters, and what recent observations are showing us about their origin and evolution.
Kwok, S. “What Is the Real Shape of the Ring Nebula?” Sky & Telescope (July 2000): 33. On seeing planetary nebulae from different angles.
Tyson, P. “The Allure of Betelgeuse.” Sky & Telescope (May 2019): 34. On the red supergiant star that will end its life as a supernova.
Websites
Eta Carinae: https://www.aavso.org/vsots_etacar. An information page from the American Association of Variable Star Observers.
Measuring the Age of a Star Cluster: https://www.e-education.psu.edu/astro801/content/l7_p6.html. From Penn State.
Nebulae as Seen with the Hubble Space Telescope: https://esahubble.org/images/archive/category/nebulae/.
Nebulae as Seen with the James Webb Space Telescope: https://esawebb.org/images/archive/category/nebulae/.
Nebulae as Seen with the Telescopes of NOIRLab (formerly the National Optical Astronomy Observatories): https://noirlab.edu/public/images/archive/category/nebulae/.
Star Clusters as Seen with the Hubble Space Telescope: https://esahubble.org/images/archive/category/starclusters/.
Star Clusters as Seen with the James Webb Space Telescope: https://esawebb.org/images/archive/category/stars/.
Star Clusters as Seen with the Telescopes of NOIRLab (formerly National Optical Astronomy Observatories): https://noirlab.edu/public/images/archive/category/starclusters/.
Star Clusters (from Encyclopedia Britannica, written by astronomers): https://www.britannica.com/science/star-cluster.
The Sky’s Top 10 Colorful Planetary Nebulae (from Astronomy Magazine): https://www.astronomy.com/observing/the-skys-top-10-colorful-planetary-nebulae/.
What Is Betelgeuse? (NASA Science): https://science.nasa.gov/universe/what-is-betelgeuse-inside-the-strange-volatile-star/.
Videos
A Tour of Planetary Nebula NGC 5189: https://www.youtube.com/watch?v=1D2cwiZld0o. Brief Hubblecast episode with Joe Liske, explaining planetary nebulae in general and one example in particular (5:22).
Celestial Fireworks: Star Cluster Westerlund 2: https://www.youtube.com/watch?v=dtY44sPNHcU. Simulation, flying through some nebulosity and then into an open star cluster (0:58).
Evolution of Stars in a Dwarf Galaxy: http://www.spacetelescope.org/videos/heic1211a/. Animation traces how stars evolve with time on the H–R diagram (0:52).
Exploring the Structure of the Ring Nebula: https://www.youtube.com/watch?v=_a94pl2lrYM. Narrated fly-through of this famous planetary nebula, with good explanations of the shape we see and the colors in the Hubble image (1:45).
H–R diagram for Globular Cluster Omega Centauri: http://www.spacetelescope.org/videos/heic1017b/. Narrated animation of how the stars on a Hubble image are plotted and related to stellar evolution (1:39).
Life Cycle of Stars: https://www.youtube.com/watch?v=PM9CQDlQI0A. Short summary of stellar evolution from the Institute of Physics in Great Britain, with astronomer Tim O’Brien (4:58).
NASA Missions Take an Unparalleled Look into Superstar Eta Carinae: https://www.youtube.com/watch?v=0rJQi6oaZf0. NASA Goddard video about observations in 2014 and what we know about the pair of stars in this complicated system (4:00).
Planetary Nebulas: A Three-Minute Introduction: https://www.youtube.com/watch?v=QAzZc_LOB6s. Narrated by astronomer and popular writer David Darling (3:18).
Star Clusters: Open and Globular Clusters: https://www.youtube.com/watch?v=rGPRLxrYbYA. Three Short Hubblecast Videos from 2007–2008 on discoveries involving star clusters (12:24).
Zooming in to Terzan 5. https://www.youtube.com/watch?v=jtQOAtiJq3o. Takes us from the Milky Way at large to a globular cluster seen with the Hubble (0:50).