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Black Hole project
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Black Hole project
Published on 9 December 2022
Joshua's Personal Gallery
I hope you are doing well.!
Welcome to the ASTR 160 comedy club, and today we will be discussing an important topic – no not whether Hermione should have ended up with Harry.
A HOW TO "EDUCATIONAL" VIDEO
The ASTRO 160 COMEDY CLUB: BLACK HOLE EDITION
We will be discussing how black holes form.
This should only take around 3 minutes – but remember as a spoke about last video, time is relative so I may go a little over…
I know what you are already thinking – black holes are not those things where your nieghbour’s lost cat goes, or where you say your homework went to your teacher when you haven’t done it.
to understand black holes, we have to go to the beginning, even before black holes are born.
Indeed, unlike Grandpa Joe, black holes were not around forever.
Okay so in the beginning, God created the heaven and the earth.
ASTRO 160 COMEDY CLUB
Oops wrong script – that was for Bible 110.
This is ASTRO 160.
Now it begins with dust, something I know very well growing up in the UK where I spent my childhood chimney-sweeping.
The galaxy contains not only billions of stars – no, not those kinds of stars – but also large amount of gas and dust.
These regions of gas and dust in the galaxy lie in the space between the stars.
If the galaxy were a street, the houses would be stars and the regions of gas and dust would be the gardens in between the houses.
Any a lot of this gas accumulates to form clouds – called molecular clouds – because of their content.
Think cloudy with the chance of dust.
This dust moves around erratically in many directions, smashing into each other – like school children playing tag in a schoolyard.
When they bump into each they accumulate.
Some groups are large, some are small.
In fact, there is a ratio of big groups to small groups – though the ratio is not as big as the ratio of Elon Musk on Twitter.
Anyway, these clumps get so big that they turn into stars themselves.
We are concerned with the top 0.
5% of these stars – the Summa Cum Laude ones.
The stars that at their core are over 1.
4x MSun have the potential to become black holes.
That is because their core is so big that it will eventually implode due to its own gravity.
This is called the Chandrasakhar limit.
These biggest stars are large, blue, just like Uncle John on a cold day.
They also have short lifetimes, also like Uncle John.
Actually, they live around 10-100 million years – almost as long as one of Rabbi Cohen’s speeches on the Sabbath.
These blue stars eventually go supernova – which is a massive explosion - like when your Mum finds out you didn’t put the chicken in the oven for supper.
However, this lasts only two weeks, unlike your mum who will hold it against you for two years.
If the core mass is between 1.
4 < M < 3 Msun,
pressure from the nucleus itself will stop the
collapse => Neutron Star.
If the core mass is above 3 Msun, nothing
can stop the collapse => Black Hole!
And there you have it – how a stellar black hole is formed.!
Thank you so much for listening.
Please join us next time here at the ASTR 160 comedy club, where we will be discussing what to do with your ex, specifically exoplanets.