IAU Minor Planet Center list of observable comets
https://www.minorplanetcenter.net/iau/Ephemerides/Comets/index.html
Southern Comets Homepage
http://members.westnet.com.au/mmatti/sc.htm
MPEC 2020-G94 : COMET C/2020 F8 (SWAN)
https://minorplanetcenter.net/mpec/K20/K20G94.html
Meteor lights up Queensland night sky leaving observers scared and amazed
Nine medieval comet sightings that signalled death and destruction
The Bayeux Tapestry and Halley’s Comet
http://albertis-window.blogspot.com/2009/09/bayeux-tapestry-and-halleys-comet.html
Fantastically Wrong: That Time People Thought a Comet Would Gas Us All to Death
https://www.wired.com/2015/01/fantastically-wrong-halleys-comet/
Australia’s Best Meteor Showers In 2020: When And How To Watch
https://www.lifehacker.com.au/2020/01/how-to-watch-australias-best-meteor-showers-in-2020/
“Dirty Snowballs” How to make a comet at home
Scientists Discover New Evidence of the Asteroid That Killed Off the Dinosaurs
Charles Messier’s Deepsky Observations
http://www.messier.seds.org/xtra/history/m-deep.html
Organic Molecules in deep space:
https://www.sciencedaily.com/releases/2010/03/100304102320.htm
http://herschel.cf.ac.uk/results/complex-molecules-orion-nebula
A Night to Remember: The Giotto Flyby of Halley’s Comet
https://solarsystem.nasa.gov/news/180/a-night-to-remember-the-giotto-flyby-of-halleys-comet/
Here’s What Happens to the Solar System When the Sun Dies
Dust and the Helix Nebula
https://www.nasa.gov/multimedia/imagegallery/image_feature_875.html
The plasma tails of comets and the interplanetary plasma
https://link.springer.com/article/10.1007/BF00225271#citeas
Almost Three Tails for Comet Encke
https://science.nasa.gov/almost-three-tails-comet-encke
Unusually high CO abundance of the first active interstellar comet
https://www.nature.com/articles/s41550-020-1087-2
Interstellar Comet Borisov Reveals Its Chemistry and Possible Origins
https://www.nasa.gov/feature/interstellar-comet-borisov-reveals-its-chemistry-and-possible-origins/
Red Dwarfs: The Most Common and Longest-Lived Stars
https://www.space.com/23772-red-dwarf-stars.html
Disappearance and disintegration of comets
https://www.sciencedirect.com/science/article/abs/pii/001910358490099X
That’s the way the comet crumbles: Hubble image shows remains of Comet ATLAS
https://www.space.com/hubble-image-comet-atlas-broken-up.html