Tuesday, August 14, 2018
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

Andromeda killed and ate our galactic sibling


Posted on Monday, 23 July, 2018 | Comment icon 4 comments

Andromeda has quite the appetite. Image Credit: NASA/JPL-Caltech
Scientists have discovered that the Milky Way once had a sibling that was consumed by our neighboring galaxy.
In a new study, scientists reconstructed events that occurred two billion years ago by conducting a detailed survey of the stars found in the faint halo which surrounds the nearby Andromeda galaxy.

Originally thought to have been built up from multiple smaller galaxies over a long period of time, this mysterious halo is now believed to have formed primarily from the remnants of M32 - a satellite galaxy that was once a similar size to our own before its outer layers were consumed.

"It's kind of like a child eating dinner, and then looking on the floor afterwards and finding breadcrumbs all around," said postdoctoral researcher Richard D'Souza from the University of Michigan.

"You know what's been eaten."

After it was cannibalized, M32 was reduced to little more than a small, dense core.

"It was shocking to realise that the Milky Way had a large sibling and we never knew about it," said study co-author Eric Bell. "Astronomers have been studying the Local Group - the Milky Way, Andromeda and their companions - for so long."

Source: The Guardian | Comments (4)

Tags: M32, Galaxy

Recent comments on this story
Comment icon #1 Posted by NicoletteS on 23 July, 2018, 20:07
They sure do a lot to push that gross metaphor. I'd like to think that m32 was just attracted to Andromeda and came over for a visit and left shoes outside the door... But maybe that's not quite as good of an analogy Sorry I guess after the depiction of a cannibalistic kid eating our neighbor and finding the remaining crumbs on the floor it's hard to Pay attention to what they meant.         
Comment icon #2 Posted by Orphalesion on 23 July, 2018, 20:10
Andromeda should be careful, that m23 will go straight to her hips!
Comment icon #3 Posted by third_eye on 23 July, 2018, 20:30
Since we're on the hips, I'd like to see the rest ... ~
Comment icon #4 Posted by L.A.T.1961 on 23 July, 2018, 21:32
Our Milky Way has a date with Andromeda, in a few billion years.     


Please Login or Register to post a comment.


  On the forums
Forum posts:
Forum topics:
Members:

6254927
265314
176533

 
'Drunk and irritable' wasps descend on the UK
8-14-2018
Wasps in Britain have been getting drunk on fermented fruit and left-over pub cider, experts claim.
Scientists reverse the aging of human cells
8-14-2018
Researchers in the UK have achieved a significant milestone in their quest to reverse the aging process.
Lubbock Lights mystery endures 67 years on
8-14-2018
The mass UFO sighting that occurred over the Texas city of Lubbock in 1951 still continues to perplex and intrigue.
New prehistoric flying reptile discovered
8-13-2018
Scientists have revealed the discovery of a new species of giant pterosaur that lived over 200 million years ago.
Featured Videos
Gallery icon 
Otter swimming lessons
Posted 8-10-2018 | 3 comments
The parents of these six baby giant otters attempt to teach their offspring how to swim.
 
Giant millipedes
Posted 8-3-2018 | 11 comments
Coyote Peterson goes in search of some creatures with a rather large number of legs.
 
Slow-motion dragonfly
Posted 7-27-2018 | 3 comments
A look at how a dragonfly moves using a camera that takes 2,000 pictures every second.
 
 View: More videos
Stories & Experiences
Disappearing objects
8-12-2018 | Houston TX USA
 
I dreamt that Austin was destroyed
8-12-2018 | USA / Texas
 
Demon on my TV screen
8-12-2018 | U.S.
 
3 knocks, 3 nights...
8-12-2018 | San Fernando Valley, CA
 
Feeling something strange
8-9-2018 | Sydney, Australia
 
 
Dragon sighting in Spring Tx.
8-9-2018 | Spring Texas
 
My bed definitely shook
7-24-2018 | nsw
 
Huge black triangle UFO
6-13-2018 | Mt Maunganui New Zealand
 
Ghastly intuition
6-13-2018 | Bay Area CA
 

         More stories | Send us your story
 
Top   |  Home   |   Forum   |   News   |   Image Gallery   |  Columns   |   Encyclopedia   |   Videos   |   Polls
UM-X 10.712 Unexplained-Mysteries.com © 2001-2018
Terms   |   Privacy Policy   |   Cookies   |   Advertise   |   Contact   |   Help/FAQ