Kurzgesagt - In a Nutshell
Season 7 Episode 21 - How to Move the Sun: Stellar Engines
Nothing in the Universe is static. In the milky way, billions of stars orbit the galactic center. Some, like our sun, are pretty consistent, keeping a distance of around 30,000 light years from the galactic center, completing an orbit every 230 million years. This dance is not an orderly ballet - more like a skating rink filled with drunk toddlers. This chaos makes the galaxy dangerous. Our solar neighbourhood is constantly changing, with stars moving hundreds of kilometers every second. Only the vast distances between objects protect us from the dangers out there. But we might get unlucky in the future. At some point we could encounter a star going supernova. Or a massive object passing by and showering earth with asteroids. If something like this were to happen we would likely know thousands, if not millions of years in advance. But we still couldn’t do much about it. Unless… we move our whole solar system out of the way.
Episodes in Season 7
Is Organic Really Better? Healthy Food or Trendy Scam?
9 min
Building a Mars Base Is a Horrible Idea: Let’s Do It!
10 min
Loneliness
13 min
The Origin of Consciousness — How Unaware Things Became Aware
10 min
What If We Detonated All Nuclear Bombs at Once?
8 min
The Most Dangerous Stuff in the Universe — Strange Stars Explained
9 min
The Side Effects of Vaccines — How High Is the Risk?
11 min
Is the EU Democratic? Does Your Vote Matter?
8 min
Is Meat Bad for You? Is Meat Unhealthy?
10 min
Could Your Phone Hurt You? Electromagnetic Pollution
8 min
Tiny Bombs in Your Blood — The Complement System
9 min
The World War of the Ants — The Army Ant
9 min
The Egg — A Short Story
8 min
What’s Hiding at the Most Solitary Place on Earth? The Deep Sea
12 min
The Billion Ant Mega Colony and the Biggest War on Earth
10 min
What If We Nuke a City?
9 min
Neutron Stars — The Most Extreme Things That Are Not Black Holes
9 min
1,000 km Cable to the Stars — The Skyhook
8 min
An Antidote to Dissatisfaction
10 min
Overpopulation & Africa
8 min
How to Move the Sun: Stellar Engines
9 min
