From the 'X-Files' Dept: "Alien Civilizations Discovered within 20 Years"
Past Due? On an Average of Every One Million Years, Earth Absorbs a Major Asteroid or Comet Impact (Today's Most Popular)

Terzan 5 -A Massive Stellar Fossil in the Center of the Milky Way

6a00d8341bf7f753ef014e60056a93970c-800wi

It's not the name of a Japanese scifi movie...Scientists have spotted stellar fossils in the center of the Milky Way, globular clusters orbiting in the central bulge which seem to have come from somewhere else.  Like all fossils these are vital evidence of the evolutionary processes which led to everything we see today.

Terzan 5 is a massive blob of over a million tightly packed stars, with up to 10,000 per cubic light-year. Examining their output with the wonderfully named Very Large Telescope (which combines four eight-meter apertures into a singe instrument effectively two hundred meters across) scientists have spotted distinct stellar signatures of both old and young stars.

This composition indicates that Terzan 5 evolved its stellar populations as a dwarf galaxy, and must once have been much larger than it is now.  As old stars explode in supernovae they spread newly created material huge distances across space - so subsequently formed stars begin with more of these distinctive elements.  But the blasts are so gigantic they would throw this starborne material right out of the current globular cluster - indicating Terzan 5 and others like it were once small galaxies in their own right. 

It seems the Milky Way's massive bulge (and others like it) accrete over time as dwarf galaxies erode and are eaten up by passers-by.

6a00d8341bf7f753ef014e600569a0970c-800wi


The Daily Galaxy via ESO

Get 'The Daily Galaxy' in Your Facebook News Feed!

Comments

I recently came across your blog and have been reading along. I thought I would leave my first comment. I don't know what to say except that I have enjoyed reading. Nice blog. I will keep visiting this blog very often.

haha ive read that before its really funny :)

haha ive read that before its really funny :)

So amazing!!A lot of mysters which we need to explore!!

So funny!Thank you for sharing!


Thanks for this excellent plugin.hanks for the great plugin

Verify your Comment

Previewing your Comment

This is only a preview. Your comment has not yet been posted.

Working...
Your comment could not be posted. Error type:
Your comment has been posted. Post another comment

The letters and numbers you entered did not match the image. Please try again.

As a final step before posting your comment, enter the letters and numbers you see in the image below. This prevents automated programs from posting comments.

Having trouble reading this image? View an alternate.

Working...

Post a comment

Your Information

(Name is required. Email address will not be displayed with the comment.)