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Cosmic Coin Toss, Record Heat in the North Atlantic and Living Worm Towers

2025/6/9

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Rachel Feltman

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Rachel Feltman: 根据最新的研究，我们银河系与邻近的仙女座星系在未来50亿年左右的碰撞，可能并非如之前认为的那样确定。通过分析欧洲航天局盖亚空间望远镜和NASA哈勃望远镜的数据，研究团队进行了10万次计算机模拟，结果显示两个星系在未来100亿年内发生碰撞的概率大约为50%。这意味着，这场宇宙级别的合并交易，实际上更像是一场硬币正反面的概率游戏，而非一个既定的未来事件。在接下来的40到50亿年里，这个概率会下降到2%左右。所以，也许我们不应该过早地为这场星系级别的“末日”做好准备。

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New research suggests the collision between the Milky Way and Andromeda galaxies, previously thought to be inevitable, is actually a 50/50 chance within the next 10 billion years, with a much lower probability in the next 4-5 billion years. This is based on 100,000 computer simulations using data from the Gaia and Hubble telescopes.

The Milky Way and Andromeda galaxies may not collide as previously predicted.
Computer simulations show a 50/50 chance of collision within 10 billion years.
The probability of a collision within the next 4-5 billion years is only around 2%.

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New simulations suggest the Milky Way’s long-predicted collision with Andromeda might be less of a cosmic certainty than we thought. A massive marine heat wave in 2023 sent North Atlantic temperatures soaring—equal to two decades’ worth of typical warming—with weak winds and climate change largely to blame. And researchers reveal that the planet’s most abundant animals—nematodes—may use teamwork and tower-building to hitch rides to new homes.

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Cosmic Coin Toss, Record Heat in the North Atlantic and Living Worm Towers