Say hello to ‘nastiest’ star ever in our galaxy 

Say hello to ‘nastiest’ star ever in our galaxy 

NASA`s Hubble space telescope has spotted a weird star in our galaxy and has been nicknamed “nasty” owing to its behaviour never seen before. The hefty, rapidly ageing star “Nasty 1” may represent a brief transitory stage in the evolution of extremely massive stars.

First discovered several decades ago, “Nasty 1” was identified as a Wolf-Rayet star, a rapidly-evolving star that is much more massive than Sun. The star loses its hydrogen-filled outer layers quickly, exposing its super-hot and extremely bright helium-burning core. But “Nasty 1” does not look like a typical Wolf-Rayet star. Hubble revealed a pancake-shaped disk of gas encircling the star. The vast disk is nearly two trillion miles wide.

Based on current estimates, the nebula surrounding the stars is just a few thousand years old and as close as 3,000 light-years from the Earth. According to astronomers, this disc is the result of an exceedingly rare occurrence wherein two Wolf-Rayets form within the same solar system and one star`s hydrogen fuel is siphoned off by its smaller companion.

“We were excited to see this disk-like structure because it may be evidence for a Wolf-Rayet star forming from a binary interaction,” explained study leader Jon Mauerhan from the University of California-Berkeley in a statement. There are very few examples in the galaxy of this process in action because this phase is short-lived, perhaps lasting only a hundred thousand years, while the timescale over which a resulting disk is visible could be only ten thousand years or less.

“What evolutionary path the star will take is uncertain, but it will definitely not be boring,” the authors noted.



Source : PTI

Related Post

Watch: This is the amount of ‘space junk’ orbiting our Earth!
views 74
Turns out a lot of space in the space has been invaded! According to NASA, there are over 50,000 pieces of debris (space junk) traveling at speeds up ...
Water in moon rocks key to understanding lunar history
views 41
A new review of hundreds of chemical analyses of Moon rocks indicates that the amount of water in the Moon's interior varies regionally - revealing cl...
Mystery behind ‘Moon’s bulging shape’ revealed
views 75
Researchers have recently revealed that the shape of the moon could be attributed to the tidal effects acting early in the moon's history. The resear...
Virgin Galactic set to unveil its new passenger rocket
views 65
Space tourism looks set to blast off again as Virgin Galactic looks set to announce a new rocket. Sir Richard Branson's new Virgin Galactic SpaceShipT...
Astronomers spot wind from monster black hole
views 65
It could be the mightiest wind ever seen - strong enouigh to stop a galaxy from producing stars. Nasa's Nuclear Spectroscopic Telescope Array (NuSTAR)...

SHARE WHAT YOU THINK