NASA's Hubble Space Telescope unexpectedly captured a rare, early-stage breakup of comet C/2025 K1 (ATLAS) just days after it first began disintegrating. Phys.org reports: "Sometimes the best science happens by accident," said co-investigator John Noonan, a research professor in the Department of Physics at Auburn University in Alabama. "This comet got observed because our original comet was not viewable due to some new technical constraints after we won our proposal. We had to find a new target -- and right when we observed it, it happened to break apart, which is the slimmest of slim chances." Noonan didn't know K1 was fragmenting until he viewed the images the day after Hubble took them. "While I was taking an initial look at the data, I saw that there were four comets in those images when we only proposed to look at one," said Noonan. "So we knew this was something really, really special." Hubble caught K1 fragmenting into at least four pieces, each with a distinct coma, the fuzzy envelope of gas and dust that surrounds a comet's icy nucleus. Hubble cleanly resolved the fragments, but to ground-based telescopes, at the time they only appeared as barely distinguishable, bright blobs. [...] "Never before has Hubble caught a fragmenting comet this close to when it actually fell apart. Most of the time, it's a few weeks to a month later. And in this case, we were able to see it just days after," said Noonan. "This is telling us something very important about the physics of what's happening at the comet's surface. We may be seeing the timescale it takes to form a substantial dust layer that can then be ejected by the gas." The findings have been published in the journal Icarus.

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schwit1 shares a report from the BBC: A French officer has reportedly revealed the location of an aircraft carrier deployed towards the Middle East after publicly registering a run on sports app Strava. French news outlet Le Monde first reported the officer, referred to as Arthur, logged a 35-minute run on the app while exercising on the deck of aircraft carrier Charles de Gaulle on 13 March. He used a smartwatch to record his run and upload the activity to the app, the paper said, creating a map that showed his location. [...] The location of the vessel was said by Le Monde to have been northwest of Cyprus, around 100km (62 miles) from the Turkish coast, with satellite images capturing the carrier and its escort. A representative from the French Armed Forces said the officer's behavior "does not comply with current guidelines," which "sailors are regularly made aware of."

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An anonymous reader quotes a report from CNBC: The Trump administration on Friday issued (PDF) a legislative framework for a single national policy on artificial intelligence, aiming to create uniform safety and security guardrails around the nascent technology while preempting states from enacting their own AI rules. The six-pronged outline broadly proposes a slew of regulations on AI products and infrastructure, ranging from implementing new child-safety rules to standardizing the permitting and energy use of AI data centers. It also calls on Congress to address thorny issues surrounding intellectual-property rights and craft rules "preventing AI systems from being used to silence or censor lawful political expression or dissent." The administration said in an official release that it wants to work with Congress "in the coming months" to convert its framework into a bill that President Donald Trump can sign. The White House wants to codify the framework into law "this year" and believes it can generate bipartisan support, Michael Kratsios, director of the White House Office of Science and Technology Policy, said in an interview with Fox News on Thursday evening. That won't be easy in a deeply divided Congress where Republicans hold thin and often fractious majorities, and where Trump has already urged GOP lawmakers to prioritize his controversial voter-ID bill above all else ahead of the November midterms. BCLP has an interactive map that tracks the proposed, failed and enacted AI regulatory bills from each state.

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