Tales of: New life

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Tales of ...
New life in an ancient galaxy
See image below
 

Elliptical galaxies were once thought to be aging star cities whose star-making heyday was billions of years ago.

But new observations with NASA's Hubble Space Telescope are helping to show that elliptical galaxies still have some youthful vigor left, thanks to encounters with smaller galaxies. Images of the core of NGC 4150, taken in near-ultraviolet light with the sharp-eyed Wide Field Camera 3 (WFC3), reveal streamers of dust and gas and clumps of young, blue stars that are significantly less than a billion years old. Evidence shows that the star birth was sparked by a merger with a dwarf galaxy. (Continued >>)

Ancient elliptical galaxy, NGC 4150
Elliptical galaxy NGC 4150
The enlarged central region reveals chaotic activity — fresh star birth in the core of this ancient elliptical galaxy, which is about 44 million light-years away. Dark strands of dust may indicate a recent galaxy merger. Blue areas indicate a flurry of recent star birth.

 

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Tales of: New life