Sun joined Milky Ways star birth party much later

Sun joined Milky Ways star birth party much later
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In one of the most comprehensive galaxy surveys yet, astronomers have found that galaxies like our Milky Way underwent a stellar \"baby boom\" churning out stars at a prodigious rate, about 30 times faster than today. Our Sun, however, was a late \"boomer\".

Washington: In one of the most comprehensive galaxy surveys yet, astronomers have found that galaxies like our Milky Way underwent a stellar "baby boom" churning out stars at a prodigious rate, about 30 times faster than today. Our Sun, however, was a late "boomer".

The Milky Way's star-birthing frenzy peaked 10 billion years ago but our Sun was late for the party - not forming until roughly five billion years ago. The new census provides the most complete picture yet of how galaxies like the Milky Way grew over the past 10 billion years into today's majestic spiral galaxies. Most of that stellar-mass growth happened within the first five billion years of their birth. The Sun's late appearance may actually have fostered the growth of our solar system's planets.

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