Outer space - Wikipedia
网页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.
What Is Space? - A Definition of Our Universe and Beyond | Space
网页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...
Universe - NASA Science
网页Welcome to the Universe. Discover the universe: Learn about the history of the cosmos, what it's made of, and so much more. Explore: Exoplanets. Worlds beyond our solar system. Stars. Black Holes. Galaxies. featured story. NASA’s Chandra Finds Galaxy Cluster That Crosses the Streams.
Solar System Exploration - NASA Science
网页It takes about 230 million years to complete one orbit around the galactic center. We call it the solar system because it is made up of our star, the Sun, and everything bound to it by gravity. Get the latest count. Moons, asteroids, and comets.
What is the Universe? - NASA Science
网页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.
NASA Releases First Breathtaking Images Taken by James Webb Space …
网页2022年7月12日 · The deepest, sharpest infrared image ever captured of the distant universe reveals a tableau teeming with thousands of galaxies in the cluster SMACS 0723 as it appeared 4.6 billion years ago.
ViewSpace
网页ViewSpace is a free, web-based collection of digital interactives and videos highlighting the latest developments in astronomy and Earth science. ViewSpace gives you the opportunity to explore our planet, solar system, galaxy, and universe.
NASA/JPL Eyes - Solar System Interactive
网页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.
WATCH: Stunning new images from James Webb Space Telescope …
网页2022年7月12日 · NASA released some of the very first images taken by the James Webb Space Telescope, marking the beginning of the next era in astronomy as the largest space telescope ever built offers scientific...
James Webb Space Telescope - NASA Science
网页2021年12月25日 · The James Webb Space Telescope is a giant leap forward in our quest to understand the Universe and our origins. Webb is examining every phase of cosmic history: from the first luminous glows after the Big Bang to the formation of galaxies, stars, and planets to the evolution of our own solar system.