Hubble Space Telescope spots a spectacular Bullseye in deep space (image)

[Admin]

NASA's Hubble Space Telescope spotted a cosmic Bullseye galaxy, revealing evidence of a rare kind of galactic collision.

Hubble Space Telescope spots a spectacular Bullseye in deep space (image) : Read more

 

[m4n8tpr8b]

The blue dwarf galaxy not only left behind eight "ripples," or star-filled rings similar to those formed when a rock breaks the surface of a pond, but also triggered new regions of star formation in LEDA 1313424. This happened as gas was ejected outward during the galaxy's passage, mixing with dust to form new stars and brighten the rings.

The language is a bit imprecise.

Those "star-filled rings" are the new regions of star formation. This is because heavier stars are much more bright and much more short-lived than lighter stars, thus they can only be found in or near star-forming regions.

It's not so much that gas was ejected outwards, more that shock waves travel through interstellar gas and dust (very roughly like ripples in a pond when you throw a rock), compressing it and thus triggering star formation.

 

[DrRaviSharma]

The language is a bit imprecise.

Those "star-filled rings" are the new regions of star formation. This is because heavier stars are much more bright and much more short-lived than lighter stars, thus they can only be found in or near star-forming regions.

It's not so much that gas was ejected outwards, more that shock waves travel through interstellar gas and dust (very roughly like ripples in a pond when you throw a rock), compressing it and thus triggering star formation.

Yes agree
and also to add that over long periods the very stars and other components of interstellar medium with central singularity (black hole) change distribution of mass and thus dust stars ions etc., in the galaxy.