CAPE CANAVERAL, Fla. — The potential collision between our Milky Way and the Andromeda galaxy may not be as imminent as once thought. Recent studies show that the chances of a crash are only about 50-50 over the next 10 billion years. That’s like flipping a coin!
A Finnish-led research team published this finding in Nature Astronomy. They concluded that fears of our galaxy’s doom might be overstated. Lead author Till Sawala, from the University of Helsinki, pointed out that while this news sounds promising for the Milky Way, it doesn’t really change things for us humans. “We likely won’t live to see the benefit,” he said.
Our sun is already more than 4.5 billion years old. It has about 5 billion years left before it runs out of energy, which will likely result in a fiery end for Earth, whether that means being swallowed or left a burned-out husk.
This updated forecast comes from advanced observations using NASA’s Hubble Space Telescope and the European Space Agency’s Gaia satellite. The researchers simulated different scenarios for the Milky Way and Andromeda based on new findings. They discovered that the gravitational influence of nearby galaxies like Triangulum increases collision chances while others like the Large Magellanic Cloud decrease those odds.
In the past, many experts believed the two galaxies were on a collision course, predicting they would merge within about 5 billion years. The merging would create a new galaxy, often called "Milkomeda."
According to Raja GuhaThakurta, an astronomer at the University of California, Santa Cruz, the fate of the Milky Way interests not just scientists but also the public. He noted that if a collision does happen, our galaxy would become a blob rather than the familiar band of stars we see today.
Looking ahead, researchers emphasize the need for more work to fine-tune predictions about our galaxy’s future. As they gather more insights, they’ll gain a deeper understanding of galaxy movements across the universe.
Interestingly, a 2021 survey conducted by the Pew Research Center found that many people are quite intrigued by space exploration and cosmic events, indicating a growing public interest in topics like these. Woven with our collective fascination with the universe, the talk of galaxies colliding or drifting apart resonates with our desire to understand our place in the cosmos.
While the Milky Way’s fate remains uncertain, Sawala reminded us that the sun’s future is essentially decided. He added a sobering thought: “There’s also a significant chance that humanity could end itself long before any cosmic disaster occurs.”
For more on this ongoing study, you can check out the original report in Nature Astronomy and stay updated with organizations like NASA.
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Science, Aerospace technology, Space exploration, Physics, Astronomy, Article, 122417824