What Is the Big Bang? | NASA Space Place – NASA Science for Kids The big bang is how astronomers explain the way the universe began It is the idea that the universe began as just a single point, then expanded and stretched to grow as large as it is right now—and it is still stretching!
The Amazing Hubble Telescope - NASA Space Place This led to the “Big Bang” theory, which says that the universe began with an intense burst of energy and has been expanding ever since Edwin Hubble seated at the 100-inch reflecting telescope at the Mount Wilson Observatory in California
What Is the Big Bang? | NASA Space Place – NASA Science for Kids El Big Bang es cómo los astrónomos explican la forma en que comenzó el universo Es la idea de que el universo comenzó como un solo punto, luego se expandió y se estiró para crecer tanto como lo es ahora, ¡y todavía se está extendiendo!
What Is a Galaxy? | NASA Space Place – NASA Science for Kids But don’t worry It won’t happen for about five billion years But even if it happened tomorrow, you might not notice Galaxies are so big and spread out at the ends that even though galaxies bump into each other, the planets and solar systems often don’t get close to colliding
What Is a Gravitational Wave? - NASA Space Place when two big stars orbit each other when two black holes orbit each other and merge An artist’s animation of gravitational waves created by the merger of two black holes
What Is a Supernova? | NASA Space Place – NASA Science for Kids This happens when a star at least five times the mass of our sun goes out with a fantastic bang! Massive stars burn huge amounts of nuclear fuel at their cores , or centers This produces tons of energy , so the center gets very hot