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Light year

Explore the concept of light years and unravel the mysteries of the universe. Discover mind-blowing facts about the vast distances and incredible phenomena that can be measured in light years.
An illustration of galaxy superclusters and cosmic voids, similar to the structure of the BOSS Great Wall James Webb Space Telescope, Hubble Space Telescope, Space And Astronomy, Astronomy Lessons, Astronomy Facts, Space Nasa, Cosmos, Debloquer Iphone, Galaxy 1

The massive galaxy wall discovered by a Canary Islands-based research team is a billion light years big. It is estimated to contain at least 10,000 times the mass of our Milky Way, so it should be no surprise it's part of a project called 'BOSS.'...

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Richard Clancy
The Andromeda Galaxy, also known as M31, really is just next door as large galaxies go. So close and spanning some 260,000 light-years, the Galaxy Evolution Explorer (GALEX) satellite's telescope produced this gorgeous portrait of the spiral galaxy in ultraviolet light. When observed in visible light, Andromeda's rings look more like spiral arms. The ultraviolet view shows that these arms more closely resemble the ring-like structure. Space Pictures, Space Images, Space Photos, Hubble Space, Space Telescope, Space And Astronomy, Nasa Galaxy, Andromeda Galaxy, Cosmos

The Andromeda Galaxy, also known as M31, really is just next door as large galaxies go. So close and spanning some 260,000 light-years, the Galaxy Evolution Explorer (GALEX) satellite's telescope produced this gorgeous portrait of the spiral galaxy in ultraviolet light. When observed in visible light, Andromeda's rings look more like spiral arms. The ultraviolet view shows that these arms more closely resemble the ring-like structure.

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kay snyder