Define etch: to produce (something, such as a pattern or design) on a hard material by eating into the material's surface (as byâ¦ â etch in a sentence to produce (something, such as a pattern or design) on a hard material by eating into the material's surface (as by acid or laser beam)â¦
This staggering image shows how our sun - which is so big it accounts for 99.86% of the mass in the solar system - would look next to the biggest star in the universe. VY Canis Majoris is so large that it is impossible to even represent the earth in this picture as it would measure less than one thousandth of a single pixel.
Quasar cluster is challenge to our current understanding, astronomer says. Enlarge. A quasar jets energy in an illustration. A newfound quasar cluster is the universe's biggest known object. Illustration courtesy M. Kornmesser, ESO. Talk about a whopperâastronomers have discovered a structure in the universe so large that modern cosmological theory says it should not exist, a new study says. (Also see Giant 'Blob' Is Largest Thing in Universe [2006].)