Scientists have discovered that our sun in the solar system was a late bloomer they believe that baby bloom happened about 10 billion years ago but our sun has only existed for about five million years.
Scientists say that the timing is not wrong as during this period planets in our solar system were created.
Heavier elements like the hydrogen and helium were abundant during our sun formation because many stars were dying and releasing these gasses in the space and these elements are believed to serve as the building block of planets and other objects.
Researchers studied how galaxies like the Milky Way evolved to understand the evolution process.
For the study they surveyed the universe and came up with 2,000 snapshots of the development of the galaxies and the star formation.
By the study they understood the complete picture of how the galaxies grew over the past 10 million years.
Casey Papovich of Texas A&M University in College Station, lead author said, “This study allows us to see what the Milky Way may have looked like in the past, it shows that these galaxies underwent a big change in the mass of its stars over the past 10 billion years, bulking up by a factor of 10, which confirms theories about their growth. And most of that stellar-mass growth happened within the first 5 billion years of their birth.”
The previous study which showed that the Milky Way like galaxies started with small clump of stars which grew rapidly by absorbing gasses that spurred rapid star births.
The study also revealed that once the star birth slowed the galaxy growth spurt also slowed.
Papovich said, “I think the evidence suggests that we can account for the majority of the buildup of a galaxy like our Milky Way through its star formation, when we calculate the star-formation rate of a Milky Way galaxy and add up all the stars it would have produced, it is pretty consistent with the mass growth we expected. To me, that means we’re able to understand the growth of the ‘average’ galaxy with the mass of a Milky Way galaxy.”
The findings of the study were published in Astrophysical Journal.