What If the Sun Was Twice Smaller

You've probably never thought how much the way you live on Earth depends on the size of the Sun! The Sun is a yellow dwarf: a perfect sphere of scorching plasma, generating a magnetic field 24/7. Despite being called a dwarf, its mass is 330,000 times bigger than that of the Earth! And the diameter of this giant is more than 864,000 miles!
But what if it became a red dwarf? First of all, red dwarf stars are much colder than yellow dwarfs. So the climate all over the planet would be getting colder and colder, and it would become impossible to live too close to the North and the South poles. And quite soon, half of the planet would turn into an icy desert...
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TIMESTAMPS:
The end of life... 1:57
What happened to gravity... 3:45
... and where did all the planets drift away? 4:30
Our new home 6:09
How we live there 7:48
#space #planets #brightside
SUMMARY:
- It happened many centuries ago: something went wrong, and our star started to lose its mass.
- When our Sun turned into a red dwarf, it meant the end of life on our native planet, Earth.
- Sadly, Earth turned out to be out of the Sun's habitable zone. The climate all over the planet was getting colder and colder, and astronomers' forecasts were getting grimmer.
- Quite soon, half of the planet turned into an icy desert. People had huge problems with food and other resources.
- Every next day was darker than the previous one. Dimmer sun meant that plants didn't have enough light to convert it into energy.
- Since the Sun was becoming smaller, its gravitational pull on our planet was getting weaker.
- Finally, our beautiful Earth turned into a lifeless chunk of rock covered with a thick layer of ice.
- With the Sun turned into a red dwarf, the Solar System we had known disappeared.
- Saturn and especially Jupiter used to partially protect smaller planets, including Earth, from asteroids!
- Plus, thanks to gas giants, small space objects that still managed to sneak past them got ejected out of the Solar System faster.
- And talking about the planet humans inhabit these days... it's Mercury. This planet is the closest to the Sun and the smallest in the Solar System.
- The ice-covered polar regions of the planet are in permanent darkness. It makes these areas incredibly cold.
- Don't think that our new home was overjoyed to see us. We had tons of different, often unpredictable problems and obstacles.
- Mercury still doesn't have any breathable atmosphere. That's why I can't take a relaxed stroll outside with my pooch.
- We live in towns covered with protective domes and go outside only after putting on a special suit.
- We also have to be very careful with the Sun's radiation. Yes, the star isn't as big or as bright as before, but it still emits enough radiation to end your life should you step outside without special protection.
Music by Epidemic Sound
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