One Amazing Astronomy Photo

This is a very interesting photograph. Have you noticed that the few bright stars in the foreground are blue in colour while all the smaller and dimmer stars in the background are redish in colour. Is this because of doppler shift due to them receding or am I imagining it?

Yea, there is a bluish tint to some foreground stars, but I do not think it is Doppler. The closer stars are grossly overexposed and further, there are bluish stars out there! Depends on their mass and consequent temperature – thats astrophysics! I'm not too clued-up on it.

It's blackbody radiation. Basically the hotter the star, the more energetic the light it emits.

Check out the link:

http://docs.kde.org/stable/en/kdeedu/kstars/ai-col orandtemp.html

Stars are not perfect blackbodies, but close enough for all engineering purposes!

As a physicist I've been taught to treat complex systems with the simplest approximations and shrug off and differences between measured and calculated values as "noise" ;)

Yep, good ol' engineer's practice too :-)

It's so amazing it seems a hollYwood movie .The bubble looks embryonic maybe it's the birth of another solar system .Thanks for a glimps of another reality.

That bubble represents the shockwave from a massive stellar explosion i.e. death, not birth.