Black holes are objects in space where the gravitational force is so strong that not even light can escape. Black holes are formed when massive stars collapse under the weight of gravity. If the star wins, it becomes a neutron star, if gravity wins, it becomes a black hole. The outside of a black hole is the event horizon. If you cross that, you have reached the point of no return. At the centre of black holes is a singularity. A point with infinite mass. This type of black hole cannot exist. This is because a point cannot spin. In this case the singularity would be a ringularity, it has the same mass, but it spins. Galaxies often have black holes in the centre of them, and there are roughly one-hundred million black holes in the Milky Way galaxy alone. According to NASA 2019 "Scientists think supermassive black holes formed at the same time as the galaxy they are in."
There are many types of black holes ranging from less than a centimetre in diameter to two times the size of the Milky Way. The smallest black holes are primordial (miniature) black holes. They are hypothetical and if they do exist, they could be the dark energy holding galaxies together. Stellar black holes have roughly the diameter of a city. They are common and small. Intermediate black holes are the hypothetical middle size of black holes. They are suspected to exist, but it has not been confirmed. Supermassive black holes are the black holes at the centre of most if not all large galaxies. Then there are ultramassive black holes. The largest known things in our universe. They have up to sixty-six times the mass of our Sun and can fit two Milky Way galaxies inside their event horizon. The largest black hole known is Ton 618, with sixty-six times the mass of our sun and it has a diameter of about three-hundred and ninety billion kilometres. That is forty times the distance of Neptune from the Sun. The human brain struggles to comprehend something at this scale. Ton 618 is one of the largest things in the universe but there are still larger things. Black holes are violent and if you fell inside one, you would experience spaghettification. This is where (if you fall feet first) your legs get stretched away from your head and you turn into something that resembles spaghetti. If you experienced this, you would die. References: Heather, R 2019 What Is a Black Hole?, Nasa. Available from: <https://www.nasa.gov/audience/forstudents/5-8/features/nasa-knows/what-is-a-black-hole-58.html#:~:text=Stellar%20black%20holes%20form%20when,the%20galaxy%20they%20are%20in>. [2 of September 2022]. Augustyn, A 2022, Black Hole, Britannica. Available from: <https://www.britannica.com/science/black-hole>. [2 of September 2022] Gianopoulos, A 2022, Hubble Determines Mass of Isolated Black Hole Roaming Our Milky Way Galaxy, Nasa. Available from: < https://www.nasa.gov/feature/goddard/2022/hubble-determines-mass-of-isolated-black-hole-roaming-our-milky-way-galaxy >. [ 2 of September 2022] Haynes, K 2020, How do black holes form?, Astronomy. Available from: <https://astronomy.com/news/2020/02/how-do-black-holes-form>. [2 of September 2022] My name is Tahlia Jones. I was born in 2008 on the Day of the Dead (2nd November) and I am an only child. I play winter netball which just finished, and my team barely missed finals. My team has eight players, and we are called Waves. I have been playing netball since 2020 and last year I got the runner up fairest and best and this year I hope to get the fairest and best award. I was the only one on my team that played every single game, and I was off for only two quarters. I also collect coins. I have a lot of coins including Banana in Pyjamas and Wiggles coins. I also like space and the universe. My favourite subject is art, and my least favourite is digital technologies. In art we did a beachscape and now we are doing lino printing. I chose a llama because they are my favourite animals. I have been at the same school all my life and my cousins used to go to the same school as well. My oldest cousin left when she was in year ten, so did my second oldest and my youngest cousin (the only person in my family younger than me), left last year. I used to be in David but now I am in Kwilana, they are both the blue house. In 2019, I went to Sydney and New Zealand. In New Zealand I got to drive a boat and we went to Hobbiton. In Hobbiton it was very hot, and I found it boring. In Sydney we went to SeaLife, and it was fun. This year I am going to Singapore and Malaysia. I was the last person in the family to leave the country.
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