The Milky Way is a giant graveyard.
REPUBLIKA.CO.ID, JAKARTA – The Milky Way is a giant graveyard. Stars are born, burn and die, but they don’t just disappear.
Big stars inside Milky Way that died billions of years ago became supernovae and turned into two types of objects. With their outer layers blown away by the force of the explosion, the remaining nuclei either enter the afterlife as very dense neutron stars or collapse on themselves and form black holes.
What remains of these ancient stars is known to scientists as the “galactic underworld” which has kept most of its secrets buried in darkness until now. After almost traveling back in time to see how and when these first stars were born, lived and died, researchers have finally created the first digital map of the galaxy’s underworld.
Reported by Space, On Tuesday (10/11/2022), they were able to do this by analyzing observations of dead stars scattered across the galaxy, such as neutron stars and black holes. Researchers find out when they were born and how they evolved. What they found was a cemetery three times the current height of the Milky Way.
What took so long to imagine an underground building in a galaxy? The nascent Milky Way, where these first stars lived, looked so different from the galaxies we see today, that even its spiral arms weren’t fully stretched yet.
Such foreign territory left him confused in guessing where to look black hole and hidden neutron stars, compared to the younger ones, scattered in this form of the Milky Way.
Created by astronomer David Sweeney and his colleagues at the University of Sydney, this new map reveals not only where the skeletons of these old stars might be hidden, but also that about a third of the remains lying around them have been or are currently there. being ejected from the galaxy.
Supernovae explode with huge but random amounts of energy that can accelerate dust and gas to millions of miles per hour. Where more or less energy will be generated is almost unpredictable.
The research team found it very difficult to know the energy involved in each supernova explosion. If a star emits gas and dust in an area where it releases more energy, it will be sent to fly farther away from surrounding stellar collections.
The research team found that all of the neutron stars may have been ejected from the galaxy. Black holes can also travel in space like evil black holes, so it’s not impossible for them to be thrown into the void.
“Now that we know where to look, let’s develop hunting technology [objek-objek ini]”Sweeney said in a statement.” I bet the ‘galactic underworld’ won’t be shrouded in mystery for long. “
