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WHY IS PLUTO NOT A PLANET? - Contenido educativo

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Subido el 5 de marzo de 2023 por Alicia M.

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Are you ready for the ultimate million dollar question, little kitty? 00:00:00
Now, tell me, which is the smallest planet in our solar system? 00:00:07
Pluto! 00:00:13
Well, I'm sorry kitty, but Pluto is the wrong answer. 00:00:15
Why? 00:00:21
Well, that's undoubtedly a million dollar question. 00:00:23
Hey friends, a lot of us grew up reading about the old nine planets. 00:00:27
But later, Pluto was delisted from its status, generating mass confusion about its identity. 00:00:33
So, in today's episode, let us explore the reason behind Pluto. 00:00:41
So, in today's episode, let us explore the reason behind Pluto's planetary fate. 00:00:48
And answer a fascinating question. 00:00:55
Why is Pluto not a planet anymore? 00:00:58
Zoom in! 00:01:02
Until the year 2005, every school science book thought us that there are nine planets. 00:01:06
Namely, Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and of course, Pluto. 00:01:14
Which was the smallest amongst all? 00:01:24
This celestial body was discovered in 1930 by an American astronomer, Clyde Tombaugh. 00:01:28
And since then, everything was a smooth sail for students across the world. 00:01:36
But on a warm day in August 2006, few scientists gathered at the International Astronomical Union in Paris. 00:01:43
And astounded the world by declaring Pluto as not a planet. 00:01:53
After hearing this startling news, the educational unions took notes and changed the matter in the textbooks. 00:02:01
But the vital question is, why did the scientist community take its title of a planet away? 00:02:08
Well, according to IAU, for a celestial body to be a planet, it needs to fulfill three essential criteria. 00:02:17
First, the object should revolve around the Sun. 00:02:27
Second, the object should be spherical in shape. 00:02:31
And thirdly, the area around its orbit should be clear and should not have any equivalent or a bigger celestial body. 00:02:35
Meaning, with the help of its gravity, the planet should clear asteroids and dwarf planets out of its way. 00:02:45
I know what you are thinking, isn't Pluto spherical and revolves around the Sun? 00:02:53
Yes, Pluto does fulfill these two conditions. 00:02:59
But in the late 90s, space scientists found out that it doesn't meet the third criteria as it hasn't cleared the neighborhood objects around its orbit. 00:03:02
Because of which it can't be called a planet and was downgraded the status of Pluto to that of a dwarf planet. 00:03:15
But Pluto isn't the only one to be called a dwarf planet. 00:03:25
Yes, in the Kuiper belt near Pluto, scientists found two planets, namely Homia and Makemake, which were just like Pluto. 00:03:29
Not only that, but in 2005, the explorers also discovered Eris, which looked bigger than Pluto itself. 00:03:40
All these newly found space objects acted like Pluto, but were nowhere similar to other planets in the solar system. 00:03:50
So that's when the IAU came up with a checklist to help them classify a planet. 00:03:58
And according to it, Pluto and these other planets fit into the first two criteria. 00:04:05
That is, it revolved around the Sun and was spherical. 00:04:11
But they didn't meet the third, which stated that the area surrounding it should be clear. 00:04:15
Hence Pluto was out of Team Planet and landed on Team Dwarf Planet. 00:04:22
Did you know Venetia Burney, just 11 years old at the time, suggested the name Pluto in 1930? 00:04:32
Also, Pluto is the only planet in the solar system with ice volcanoes and an ocean hidden under its icy surface. 00:04:40
Hope you learned something new in today's episode. 00:04:51
Until next time, it's me, Dr. Binox, Zooming out. 00:04:55
Aw, never mind. 00:05:03
Subido por:
Alicia M.
Licencia:
Dominio público
Visualizaciones:
120
Fecha:
5 de marzo de 2023 - 20:01
Visibilidad:
Público
Centro:
IES LA SENDA
Duración:
05′ 11″
Relación de aspecto:
1.78:1
Resolución:
1920x1080 píxeles
Tamaño:
137.06 MBytes

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