Astronomers using ALMA have measured an unprecedented deuterium-to-hydrogen ratio in the water of interstellar comet 3I/ATLAS, at least 40 times higher than Earth's oceans. The finding, published in ...

Comet 3I/ATLAS continues to make astonishing headlines, thanks to new findings from astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA). This new research reveals that 3I/ATLAS ...

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The presence of deuterium, an isotope of hydrogen, in 3I/ATLAS suggests the interstellar comet formed in a much colder place before our solar system existed.

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"We hope to gain a deeper understanding of how planetesimals and planets formed in a wide variety of stellar systems, including our own solar system." When you purchase through links on our site, we ...

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3I/Atlas, a rare interstellar object that had some astronomers wondering whether it's a spacecraft, will soon reach its nearest point to the sun and Earth. The interstellar comet will come within ...

Last fall, a Chinese spacecraft orbiting Mars captured images of a comet from another star system, offering scientists a ...