1900s:
* Halley's Comet (1910): A famous periodic comet, last visible in 1910 and expected to return in 2061.
* Comet Bennett (1970): A bright comet visible to the naked eye in the northern hemisphere.
1980s:
* Comet Ikeya-Seki (1965): A bright comet that passed extremely close to the Sun, causing its tail to stretch across the sky.
* Comet West (1976): A bright comet that broke into several pieces.
* Comet Halley (1986): Halley's return in 1986 was observed by spacecraft and telescopes.
* Comet Giacobini-Zinner (1985): Known for its association with the Draconid meteor shower.
1990s:
* Comet Hyakutake (1996): A bright comet visible to the naked eye for several months.
* Comet Hale-Bopp (1997): One of the brightest comets of the 20th century, visible for over 18 months.
2000s:
* Comet LINEAR (2000): A relatively bright comet visible to the naked eye.
* Comet McNaught (2007): A spectacular comet that was visible to the naked eye in the Southern Hemisphere.
2010s:
* Comet ISON (2013): A comet that was initially thought to be exceptionally bright, but it broke apart near the Sun.
* Comet Lovejoy (2011, 2014, 2015): A comet that has made several close passes to the Sun, surviving each encounter.
* Comet PanSTARRS (2013): Visible to the naked eye in the Northern Hemisphere.
2020s:
* Comet NEOWISE (2020): A bright comet visible to the naked eye in the Northern Hemisphere.
This is just a small sample of the many comets observed in the last 100 years. To find a more comprehensive list, you can explore websites dedicated to comet observation and research, such as the website of the Minor Planet Center: [https://www.minorplanetcenter.net/](https://www.minorplanetcenter.net/)
Remember, comets are discovered and observed regularly. Keep an eye on astronomy news sources to stay updated on the latest comet discoveries!
