Universe - NASA Science
Discover the universe: Learn about the history of the cosmos, what it's made of, and so much more. Worlds beyond our solar system. In 2005, NASA’s Spitzer mapped a ring of dust around Vega, one of the brightest stars in the northern sky.
What is the Universe? - NASA Science
The universe is nearly 14 billion years old, our solar system is 4.6 billion years old, life on Earth has existed for maybe 3.8 billion years, and humans have been around for only a few hundred thousand years. In other words, the universe has existed roughly 56,000 times longer than our …
Universe - Wikipedia
The universe is all of space and time [a] and their contents. [10] It comprises all of existence, any fundamental interaction, physical process and physical constant, and therefore all forms of matter and energy, and the structures they form, from sub-atomic particles to entire galactic filaments.
Universe | Definition & Facts | Britannica
2024年12月16日 · universe, the whole cosmic system of matter and energy of which Earth, and therefore the human race, is a part. Humanity has traveled a long road since societies imagined Earth, the Sun, and the Moon as the main objects of creation, with the rest of the universe being formed almost as an afterthought.
Science and Universe
An online magazine featuring articles on astronomy, space exploration, history of science, sky observation, everything related to the science of the universe.
What is the universe? - Live Science
2022年5月3日 · The universe is literally everything, the sum of all existence. It includes all matter, like stars and galaxies. The universe also includes all radiation and all other forms of energy.
Overview - NASA Science
Here is the history of the universe according to cosmologists’ current theories. Around 13.8 billion years ago, the universe expanded faster than the speed of light for a fraction of a second, a period called cosmic inflation. Scientists aren’t sure what came before inflation or what powered it.
The Universe - NASA+
3 天之前 · Discover how the universe works, explore how it began and evolved, and search for life on planets around other stars as we seek to understand the universe and
Science - Imagine the Universe!
2018年12月11日 · Explore some of the objects that make up our universe, from our own Sun to distant pulsars and black holes. Scientific discoveries often reveal new mysteries. Take a look at a few of the mysteries that astronomers and astrophysicists are working on right now. Special objects and images in high-energy astronomy.
Imagine the Universe! - NASA
2023年4月17日 · Space Science, Planet Earth, Solar System and Planets, Stars, Astronomy, Sun. This site is designed for students who are 14 or older and for anyone interested in learning about the universe. Learn about black holes, quasars, dark matter, gamma rays, pulsars, galaxies, stars and astrobiology.