Thursday, March 4, 2021
Contact us    |    Advertise    |   Help    |   Cookie Policy    |   Privacy Policy    RSS icon Twitter icon Facebook icon
    Home  ·  News  ·  Forum  ·  Stories  ·  Image Gallery  ·  Columns  ·  Encyclopedia  ·  Videos
Find: in

The center of our galaxy exploded 'recently'


Posted on Monday, 7 October, 2019 | Comment icon 11 comments

Our galaxy is more active than scientists had realized. Image Credit: Nick Risinger
Scientists have discovered that a high-energy flare ripped through the galaxy in the relatively recent past.
The cataclysmic event was thought to have been triggered by nuclear activity associated with Sagittarius A* - a gargantuan black hole four million times the mass of the Sun.

It occurred 3.5 million years ago and could be felt over a distance of 200,000 light years.

Scientists believe that the flare produced two enormous 'isolation cones' which sliced through the galaxy, leaving behind a trail of gas that extends between the Large and Small Magellanic Clouds.
"The flare must have been a bit like a lighthouse beam," said study team leader Prof Bland-Hawthorn from the University of Sydney. "Imagine darkness, and then someone switches on a lighthouse beacon for a brief period of time."

The discovery suggests that our galaxy is a lot more active that previously thought.

"These results dramatically change our understanding of the Milky Way," said study co-author Magda Guglielmo. "We always thought about our galaxy as an inactive galaxy, with a not so bright center."

Source: BBC News | Comments (11)


Tags: Supermassive Black Hole


Recent comments on this story
Comment icon #2 Posted by lightly on 8 October, 2019, 12:27
I think that's a good question joc.    All spiral galaxies obviously spin around  something Extremely massive at their centers...most likely a black hole?     But there are other types of galaxies, including what is called an irregular Galaxy.
Comment icon #3 Posted by Noteverythingisaconspiracy on 8 October, 2019, 13:02
As far as we can observe it does appear that most spiral galaxies formed around supermassive blackholes.
Comment icon #4 Posted by joc on 8 October, 2019, 15:32
Thank you... Which makes since because galaxies are rotating... as if they were slowly being sucked down the bathtub hole..which gives rise to another question. What eventually happens to a black hole? 
Comment icon #5 Posted by Noteverythingisaconspiracy on 8 October, 2019, 16:41
It is thought that eventually they will evaporate due to something called Hawking radiation, but how that works is way above my paygrade so here is a link instead: https://en.wikipedia.org/wiki/Hawking_radiation
Comment icon #6 Posted by joc on 9 October, 2019, 0:28
I pretended I was understanding all that until I got to the equations....suffice to say...yeah....beyond my pay grade as well.
Comment icon #7 Posted by lightly on 9 October, 2019, 13:17
I wonder why spiral galaxies form a flattened Disk shape?    I've probably read about it before ,but I don't remember any explanations for that .    . . . . The discs are bulged in the center.... And elliptical galaxies are roundish ,rather than flat.
Comment icon #8 Posted by cerberusxp on 13 October, 2019, 8:41
Yes,a super massive black hole!
Comment icon #9 Posted by Jon the frog on 18 October, 2019, 15:41
So puny we are...
Comment icon #10 Posted by Waspie_Dwarf on 18 October, 2019, 20:39
Speak for your self  
Comment icon #11 Posted by Jon the frog on 21 October, 2019, 22:19
Puny dwarf ! 


Please Login or Register to post a comment.


  On the forums
'Extinct' bird rediscovered after 170 years
3-4-2021
An extremely rare bird that hadn't been seen in almost two centuries has turned up again in Indonesia.
'Space hurricane' observed over the North Pole
3-3-2021
Scientists have, for the first time, detected a hurricane taking place in the Earth's upper atmosphere.
Tom Cruise deepfake is sign of things to come
3-3-2021
A series of extremely convincing deepfake clips of Tom Cruise have raised both concern and intrigue.
Space hotel could open its doors in 2027
3-2-2021
One forward-thinking company is planning to build and launch a rotating space hotel with artificial gravity.
Stories & Experiences
The voice of something not human
11-17-2020 | Baldwin Hills, Los Angeles
 
Shadow figure demon ?
11-14-2020 | USA
 
Ghost following me
9-18-2020 | Iowa
 
Mysterious glowing cube
8-23-2020 | Alabama
 
Black blob in my room/bed
7-23-2020 | Powell,TN U.S.
 
Transparent levitating ball
7-14-2020 | Santa Rosa, California
 
 
 
Grim reaper-like visitation
6-16-2020 | Canada
 
My monster catfish story
6-15-2020 | Dallas texas
 

         More stories | Send us your story
Featured Videos
Gallery icon 
NASA studies underwater 'white smoker' vents
Posted 4-17-2020 | 3 comments
Hydrothermal vents on the ocean floor can teach us about possible habitats on other worlds.
 
10 strange things about our solar system
Posted 3-17-2020 | 0 comments
A look at some of the most mysterious things about our solar system.
 
Lizzie - Scotland's other loch monster
Posted 3-8-2020 | 0 comments
Amelia Dimoldenberg investigates the Loch Ness Monster's neighbor.
 
Adam Savage and Spot
Posted 2-14-2020 | 4 comments
Adam Savage tests out Boston Dynamics' impressive Spot robot.
 
NASA 2020: Are you ready ?
Posted 1-1-2020 | 3 comments
A look at what's coming up in the world of spaceflight this year.
 
 View: More videos
 
Top   |  Home   |   Forum   |   News   |   Image Gallery   |  Columns   |   Encyclopedia   |   Videos   |   Polls
UM-X 10.712 Unexplained-Mysteries.com (c) 2001-2021
Terms   |   Privacy Policy   |   Cookies   |   Advertise   |   Contact   |   Help/FAQ