Outer space - Wikipedia
Outer space (or simply space) is the expanse that exists beyond Earth's atmosphere and between celestial bodies. [1] . It contains ultra-low levels of particle densities, constituting a near-perfect …
What Is Space? - A Definition of Our Universe and Beyond | Space
2022年2月17日 · From our Earth -bound perspective, outer space is most often thought to begin about 62 miles (100 kilometers) above sea level at what is known as the Kármán line. This is …
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. Scientists have long speculated about the geometry of …
Solar System Exploration - NASA Science
Learn about the planets in our solar system. The solar system has eight planets: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. There are five officially recognized dwarf …
What is the Universe? - NASA Science
About 8,000 miles (12,800 kilometers) below your feet — on the opposite side of Earth — lurks the unforgiving vacuum and radiation of outer space. In fact, you’re technically in space right now.
Outer space - Simple English Wikipedia, the free encyclopedia
Outer space, commonly shortened to space, is the near-vacuum between celestial bodies. [1] It is where all of the planets, stars, galaxies and objects are found. It is the expanse that exists …
Space.com: NASA, Space Exploration and Astronomy News
1 天前 · Get the latest space exploration, innovation and astronomy news. Space.com celebrates humanity's ongoing expansion across the final frontier.
NASA Releases First Breathtaking Images Taken by James Webb Space …
2022年7月12日 · Just a century ago scientists believed there was only one galaxy, but this image reveals thousands—all found in a tiny speck of sky comparable in size to a single grain of …
What's the difference between outer space and deep space?
2023年5月24日 · The term outer space refers to anything beyond Earth, even things very close to home in low-Earth orbit, which begins as low as 100 miles (160 kilometers) above the planet.
An Astrophysicist Reveals What Space Is Actually Made of
Space, or outer space, is a vast, near-perfect vacuum largely devoid of matter. This vacuum contains very few particles compared with Earth's atmosphere. However, it's not entirely …