October 9, 1604, SN 1604 is observed

On this day (October 9) in 1604, SN 1604 is observed, the most recent supernova observed in the Milky Way.
A supernova is a stellar explosion that can manifest itself in a very remarkable way, even with the naked eye, in places on the celestial sphere where nothing in particular had been previously detected.
The supernova generates a huge shock wave. This shock wave generates the release of remains of all kinds of gases and minerals that are being lost in the universe. These stellar debris are called remnants and their dissolution in space can take millions of years.
Supernova SN 1604 was first observed on October 9, 1604. The German astronomer Johannes Kepler (scientist born 1571) first observed it on October 17.
Kepler's study of it was so extensive that he later came to know it by name (Kepler's Supernova). His book on the subject was called " De Stella nova in pede Serpentarii" ( On the New Star at the Serpent Bearer's Foot ).
This is the only supernova ever observed in our solar system (at a distance of 20,000 light years from Earth). Many other supernovae have been seen outside our solar system. The supernova remnant (debris and remnants of the explosion) that resulted from this supernova is considered a typical object in its class and continues to be the subject of much study in astronomy.
- Hello Mr. Kepler
- Hello
-I have to congratulate him on his latest book
- oh yeah?
- yes, the book "De Stella nova in pede Serpentarii" is fantastic
- I'm glad
- I bought it two months ago
- and do you like it?
- well I don't know
- what don't you know?
- no, it's just that I take it to bed and never get past the second page because I fall asleep
- how?
- That helps me sleep like a baby. I appreciate it
- please leave my house
- oh, okay, but thank you for your sleeping book
- you are a brute
- but I sleep very well
- bye


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