![It happened on a… September 21](https://allbuzznews.com/https://cdn.buzznews.ca/2023/09/coverimages21302101.jpg)
2017
Discovery of the first brainless animal that sleeps, the jellyfish Cassiopea, research published in “Current Biology” by Caltech scientists
![](https://cdn.buzznews.ca/2023/09/Cassiopea-andromeda.jpeg)
1992
![](https://cdn.buzznews.ca/2023/09/Ottawa-Senators-1200x675-1.jpg)
1970
“Monday Night Football” created by Roone Arledge, premieres on ABC – Browns 31, Jets 21.
![](https://cdn.buzznews.ca/2023/09/NFL-Football-1200x675-1.jpg)
1966
![](https://cdn.buzznews.ca/2023/09/coverimages21302101-1200x675-1.jpg)
1963
![](https://cdn.buzznews.ca/2023/09/757f843a169cc678064d9530d12a1881-1200x675-1-2.jpg)
1957
“Perry Mason” TV series starring Raymond Burr premieres on CBS-TV.
![](https://cdn.buzznews.ca/2023/09/coverimages33450695-1200x675-1.jpg)
1955
![](https://cdn.buzznews.ca/2023/09/Rocky-Marciano.jpg)
1937
J.R.R. Tolkien’s “The Hobbit” was first published.
![](https://cdn.buzznews.ca/2023/09/coverimages34877301-1200x675-1.jpg)
1903
First cowboy film “Kit Carson” premieres in US.