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 […]
Tag: Space travel
SpaceX’s operation out of Boca Chica, Texas has been hard at work creating a reusable spacecraft capable of taking humans to the moon or even Mars. It started with short hops, then test flights multiple kilometers up with some spectacular landings, both elegant and explosive. The upcoming launch in early 2022 Now the company is […]
Gravity, Space-Time, Relativity, Wormholes and Black Holes. These are very complex concepts depicted magnificently by Christopher Nolan in the movie Interstellar but also open up to new questions… The main one being: In a decaying ecosystem which we are contributing to destroy, is space travel really a solution for the salvation of humankind?