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 vacuum [2] of predominantly hydrogen and helium plasma, permeated by electromagnetic radiation, cosmic rays, neutrinos, magnetic fields and dust.
NASA/JPL Eyes - Solar System Interactive
NASA’s Solar System Interactive (also known as the Orrery) is a live look at the solar system, its planets, moons, comets, and asteroids, as well as the real-time locations of dozens of NASA missions.
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 an imaginary boundary at ...
Solar System Exploration - NASA Science
7. Room to Breathe. Our solar system has many worlds with many types of atmospheres. 8. Ring Worlds. The four giant planets – and at least one asteroid – have rings. 9. Getting Out There. More than 300 robotic spacecraft have left Earth's orbit, and …
Universe - NASA Science
ESA (the European Space Agency) has released a new, 208-gigapixel mosaic of images taken by Euclid, a mission with NASA contributions that launched in 2023 to study why the universe is expanding at an accelerating rate. Learn more. Featured News. More …
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 beyond Earth and its atmosphere. On Earth, space begins at the Kármán line (100 km above sea level). [2] This is where Earth's atmosphere is said to ...
Space.com: NASA, Space Exploration and Astronomy News
3 天之前 · 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 · In space it carefully unfolded a tennis court-sized protective sunshield, and a honeycomb of 18 hexagonal, gold-lined mirrors more than 21 feet across, each aligned to 1/10,000th the width a ...
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. Deep space, on the ...
Outer Solar System - NASA Science
NASA’s Planetary Science missions to the outer solar system help help scientists understand more about Earth and the formation and evolution of the solar system. ... which absorbs red light but allows blues to be reflected back into space. The atmosphere is mostly hydrogen and helium, but also includes large amounts of water, ammonia and methane.