There are probably 10,000 stars for every grain of sand on Earth, in the observable universe. We know that there might be trillions of planets. So where are all the aliens? Some key facts The entire observable universe is about 90 billion light-years in diameter. There are at least 100 billion galaxies each with 100 […]
We humans are unable to experience the true nature of the universe, unfiltered. Our senses and brains can only process a fraction of the world. So we have to use concepts and tools, to learn about the true nature of reality.
For most of our history, human technology consisted of our brains, fire, and sharp sticks. While fire and sharp sticks became power plants and nuclear weapons, the biggest upgrade has happened to our brains. Since the 1960’s, the power of our brain machines has kept growing exponentially, allowing computers to get smaller and more powerful at the same time. But this process is about to meet its physical limits.
We’ve learnt to read the universe through its own language, mathematics, since ancient Greece. In 1687 Newton projected us forward by unifying the laws of nature with the ones governing the orbits of planetes. Then in 1865 Maxwell connected Electic energy with magnetism. In 1915 Einstein merged Space and Time with his revolutionary general relativity […]