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.
One of the most massive stars known is Eta Carinae, which, with 100â150 times as much mass as the Sun, will have a lifespan of only several million years. Sudies of the most massive open clusters suggests 150 M â as an upper limit for stars in the current era of the universe.s of 2006, the star with the highest known absolute magnitude is LBV 1806-20, with a magnitude of â14.2. This star is at least 5,000,000 times more luminous than the Sun. The least luminous stars that are currently known are located in the NGC 6397 cluster.