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.
Largest Black Hole. Black holes are not physically large regions of space. But when you include their mass, they are among the top competitors for the largest things in the universe. And quasar OJ287 is the largest black hole weâve spotted. Itâs estimated to be 18 billion times the mass of our sun and is a supermassive black hole located in the center of a galaxy.