WebMar 17, 2024 · When the universe began, it was just hot, tiny particles mixed with light and energy. It was nothing like what we see now. As everything expanded and took up more space, it cooled down. The tiny particles grouped together. They formed atoms. Then those atoms grouped together. Over lots of time, atoms came together to form stars and galaxies. Web17 hours ago · General Facts About the Universe. The Milky Way galaxy is about 100,000 lightyears across. Every galaxy has a supermassive black hole at its center. The universe is thought to be around 13.7 billion years old. The universe is expanding–it increases by 0.007% in one million years. The universe makes a noise like a low humming sound.
9 things we learned about aliens in 2024 Live Science
WebThe Universe is a big, open place. You are in the Universe. Things you can't see are in it, too. The biggest stars are in it. Even the smallest things on Earth are part of the Universe. We don't even know how big the … WebDec 28, 2024 · Here are 9 things we learned about aliens (and where to look for them) in 2024. 1. UFOs are real (and the government knows it) In June, the Pentagon released a highly anticipated report detailing ... can we use tubeless tyre in spoke wheel
NASA - How Big is Our Universe?
WebMar 15, 2024 · The universe was born with the Big Bang as an unimaginably hot, dense point. When the universe was just 10 -34 of a second or so old — that is, a hundredth of … Web48 Interesting Facts About Universe A piece of A4 paper sheet folded 103 times is as thick as the size of the observable Universe: 93 billion light-years. There are ten times as many stars in the known universe as there are grains of sand in the world. … Web1. There are more stars in the universe than grains of sand on all the beaches on Earth. That’s at least a billion... 2. A black hole is created when big stars explode. Its … bridgfords estate agents wilmslow