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.
Currently, scientists believe that the largest star in the known universe is NML Cygni, a red hypergiant found in the Cygnus constellation. Discovered by astronomers Neugebauer, Martz & Leighton (from where it gets its designation âNMLâ) in 1965, it measures 1,650 solar radii (1,147,575,000 KM).