The speed of light is pretty darned fast, but given just how far the Earth is away from the Sun, its light it doesn’t get here instantly. It’s Okay to Be Smart teaches us how it’s not just a simple math equation, but complex astrophysics that explain how sunlight is much older than you’d think.
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Things are always changing in the universe, so it’s possible that someday in the distant future that the Earth could be in danger from a catastrophic force. But is there a way that we could avoid such a fate given enough notice and ingenuity? Kurzgesagt digs into a theoretical method to do just that, by moving our entire solar system.
The Earth’s lone moon is very important to the way the world works, affecting everything from the ocean tides, to the regularity of our seasons and the length of our days. But what would happen if another similar asteroid got pulled into the Earth’s orbit? SciShow explores some of the potentially serious implications.
Kurzgesagt takes on one of the most bizarre and terrifying objects in the universe: neutron stars. Formed when certain giant stars collapse, neutron stars are made of strange matter, which are theoretically “perfectly stable.” And that’s where Physics and English disagree.
In theory, energy consumed by a black hole is trapped forever. But it turns out it might be possible to harness the rotational energy of a spinning black hole to do everything from powering civilization to creating the biggest explosive device ever. Kurzgesagt explains.
They sound cute and cuddly, but the white dwarfs that Kurzgesagt is talking about here will be the last bastions of light and energy in the universe as our universe eventually expires. These highly dense objects are basically the remnants of stars after they burn out.
Reigarw presents a comparison of all kinds of matter in the universe, from the tiniest subatomic particles to giant superclusters of galaxies, you’ll quickly feel insignificant right after we zoom past the human race. The voiceover is a bit silly, but it’s still amazing.
While Kyrie Irving might believe the Earth is flat, most rational humans are willing to go along with the scientific evidence that’s right in front of us. In this classic clip from Carl Sagan, he shows off some very basic observations which prove this place is an orb and not a sheet.
Wendover Productions contemplates the hypothetical of what we should do if and when we ever encounter an alien species, proactive measures to seek out other species, and reminding us along the way how mankind has a long history of conquering new people it meets.
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