Biggest questions:
- Where did we come from? How did we get here? Why is the universe made this way?
- Our universes came into being by the Big Bang.
+ In 1929, Edwin Hubble found that all galaxies are moving away from one another. The further they are from earth, the faster they are moving. 10 to 15 billion years ago, they were extremely close together.
+ In 1965, they discovered that the universe had a very dense and hot beginning.
- Eistein found that space and time aren't separate entities. They are interwoven into a "fabric" and we call space-time-the stage on which the universe exists.
=> The Big Bang couldn't have a cause because time didn't exist. There is no time for a cause to exist in.
- We have fossil evidence of basic life on our planet from 3.5 billion years ago-500 million years after the earth became habitable. By the time Earth had formed, the universe was celebrating its seven billionth birthday.
- Black holes are formed when stars collapse. This happens because theses giant balls of gas possess an incredible amount of mass and the more mass there is, the more gravity accompanies it.
- Planet threats:
+ Greenhouse effect => Reduce our carbon footprint (Global warming)
+ Nuclear annihilation
- Moore's Law: computers can double their speed and capacity every 18 months. If it happens, AI may surpass human intelligence within 100s years
=> Look at AI with a critical eye: Always ask yourself what impact these developments will have on society (Now and then!)
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