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Interstellar Comet 3I/ATLAS Formed Up To 12 Billion Years Ago, New Observations Suggest

Hubble captured this image of 3I/ATLAS on July 21, 2025, when the comet was 446 million km (277 million miles) from Earth. Image credit: NASA / ESA / David Jewitt, UCLA / Joseph DePasquale, STScI.

The interstellar comet 3I/ATLAS carries a chemical fingerprint unlike anything in our Solar System, and it may have formed 10 to 12 billion years ago, before our Sun even existed, according to two papers published in the journal Nature.

The post Interstellar Comet 3I/ATLAS Formed Up To 12 Billion Years Ago, New Observations Suggest appeared first on Sci.News: Breaking Science News.

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Astronomers Detect Clearest Signs Yet of Magnetic Fields on Extrasolar Planets

This illustration shows magnetic activity in an ultra-hot Jupiter. Image credit: ESO / M. Kornmesser / L. CalΓ§ada.

By tracking fierce winds racing through the atmospheres of seven ultra-hot Jupiters, astronomers have uncovered the strongest evidence yet that magnetic fields shape weather on worlds beyond our Solar System.

The post Astronomers Detect Clearest Signs Yet of Magnetic Fields on Extrasolar Planets appeared first on Sci.News: Breaking Science News.

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Medir ventos estranhos deu pistas sobre exoplanetas onde pode vir a ser possΓ­vel viver

Pela primeira vez, cientistas compararam ambientes magnΓ©ticos de outros planetas, um passo fundamental para compreender aqueles que podem ser habitΓ‘veis, conservar Γ‘gua e, talvez, um dia, albergar vida tal como a conhecemos - e criar auroras ainda mais espetaculares.

The post Medir ventos estranhos deu pistas sobre exoplanetas onde pode vir a ser possΓ­vel viver appeared first on Tek NotΓ­cias.

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