James Webb spots thousands of Milky Way-like galaxies in early universe that shouldn’t exist – DNyuz

James Webb spots thousands of Milky Way-like galaxies in early universe that shouldn’t exist

The Milky Way is an exceptional galaxy and home to our small slice of the cosmos. Scientists say that, even though the Milky Way has a long history, it was too fragile for a galaxy like this to have existed in the beginning of the universe when there were violent mergers of galaxies. Now, though, the James Webb Space Telescope has discovered evidence of thousands of early universe Milky Way-like galaxies, and it has scientists baffled.

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By all accounts, these more than 1,000 galaxies shouldn’t exist in the violent confines of the early universe. That’s because the disk galaxies like our own feature delicate spiral arms, making them easy to rip to shreds during galactic mergers. Scientists believe fragile galaxies like our own would not have survived the violence of the cosmos’ early days.

To learn that this wasn’t the case is both surprising and baffling for many astronomers. In fact, a new study published on September 22 in The Astrophysical Journal suggests that these galaxies were 10 times more common in the early universe than previously believed they could be.

This revelation that the early universe is rife with Milky Way-like galaxies only deepens the mystery of how large galaxies first bloomed in the cosmos. For the most part, scientists believe that the earliest times of the universe were pockmarked by star formation, which later formed together to create the first dwarf galaxies, some 1 to 2 billion years after the universe began.

At this point, scientists believe that the galaxies cannibalized one another, combining together violently over and over in violent interactions. This helped to create large galaxies like the Milky Way. As such, finding evidence of these massive and fragile galaxies in the early universe continues to raise questions about the current theories we have about the early cosmos.

When peering back 9 billion to 13 billion years ago, the Webb space telescope discovered that 1,672 galaxies out of 3,956 observed were all disk galaxies like our own. The spiral arms are fragile and massive, just like our galaxy. It’s a fantastic discovery that could help us better understand the evolution of the early universe as a whole.

The post James Webb spots thousands of Milky Way-like galaxies in early universe that shouldn’t exist appeared first on BGR.

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