Swift telescope falls to Earth on Wednesday as Ryugu samples yield all five genetic letters

On 3 November, The Verge reported that NASA expects the Swift Observatory to re-enter Earth's atmosphere at about 3:30AM ET on Wednesday. The error window is about 11 hours. The agency has dropped the rescue attempt it ran earlier this year. The Link spacecraft trying to lift the telescope hit attitude control problems.

Swift is not small. NASA lists it at around 3,200 pounds, 5.6 meters (18.4 feet) tall and 5.4 meters (17.7 feet) wide including its deployable solar arrays. Most of the spacecraft should burn up, but some components will likely survive. NASA's own statement, quoted by The Verge, puts the chance of anyone on Earth being harmed at roughly 1 in 2,100. It limits surviving fragments to a band between 20.6 degrees south and 20.6 degrees north latitude because of the telescope's low inclination. Solar storms pushed Swift into a lower orbit, according to The Verge, and the rescue attempt failed. The telescope was built for a two-year prime mission to study the origin of gamma-ray bursts. Instead it served as a general-purpose multi-wavelength observatory for almost 22 years.

Why the orbit decayed

That is the pattern with ageing hardware. The mission outlives the plan, then the orbit stops cooperating. NASA and the US Space Force say they will keep monitoring the re-entry. They will update predictions on NASA's blog.

The same day brought a very different result from the other end of astronomy. Samples returned by JAXA's Hayabusa2 mission in 2020 contain all five nucleobases used in DNA and RNA, according to a study published in Nature Astronomy and described by ScienceDaily on 3 November. The Hayabusa2 spacecraft delivered 5.4 grams of pristine material. Researchers extracted organics with water and hydrochloric acid before detection. An international team had already reported uracil in these samples in 2023. The new work confirms adenine and guanine, plus cytosine, thymine and uracil, in roughly similar amounts across the two samples analysed.

The result is not isolated. ScienceDaily notes that NASA's Bennu samples yielded all five nucleobases in 2025. The Murchison meteorite, which fell in Australia in 1969, and the Orgueil meteorite in France in 1864 had already produced a rich variety of organics. The asteroidal parent bodies preserve material largely unchanged for about 4.5 billion years. There is a chemical wrinkle. Murchison is enriched in purines, while Bennu and Orgueil contain more pyrimidines, and ammonia is thought to influence which nucleobases form. Neither report agrees on a single explanation for that split, and the paper's authors do not claim one here.

Telescopes as data machines

Between the falling satellite and the asteroid chemistry sits a quieter shift in how telescope time gets used. HPCwire reported on 2 November that the SETI Institute and Breakthrough Listen have integrated NVIDIA's Holoscan platform at the Allen Telescope Array in Northern California. The setup lets software agents steer the instrument, correct incoming data and run models on the stream from a natural language request. The DAQIRI library pulls terabits per second of sensor data straight into GPU memory. CyberEther does the signal processing with CUDA-X libraries, and the Nexus orchestrator acts as the agent harness. The system handles 2.4 terabits per second on NVIDIA RTX PRO 6000 Blackwell GPUs, with inference running on premises next to the instrument, according to HPCwire.

Andrew Siemion, the Bernard M. Oliver chair for SETI at the SETI Institute and principal investigator of Breakthrough Listen, said in that report: "As our new agentic observatories reach out into the universe, what they find may have much more in common with themselves than with the humans who created them." The pipeline has already achieved what HPCwire describes as the first real-time AI detection of a pulsar, in the Crab Nebula. The team is now evaluating open models including NVIDIA Nemotron for observatories that might one day run offline on the far side of the moon.

Discovery is also arriving from archival data. NASA's Hubble and James Webb space telescopes found 27 previously unknown trans-Neptunian objects, ScienceDaily reported on 1 November, in the deepest survey of that population to date. The objects shine more than 100 million times more faintly than things visible to the naked eye. Two related studies in The Astronomical Journal found fewer small bodies than some theories predicted. They also found colours that match much larger objects in the same regions. Hubble collected visible light and Webb infrared, observing the same patch of sky at the same time.

Further out, WIRED reported on 1 November that astronomers at the European Southern Observatory found a debris disk around the white dwarf J1328-1450, about 1,600 light-years from Earth, using the Very Large Telescope. The disk has two rings of gas separated by a gap. The data suggest at least two surviving planetary bodies could shape it, one a few kilometres across and one possibly as large as Pluto or the moon. That has not been confirmed as two separate objects. An alternative is that the structure comes from different parts of a single body, such as crust and core. The star's path, through a red giant phase to a white dwarf, is the one the sun is expected to follow in about 5 billion years.

For robotics teams, the lesson from faster discovery is less romantic. The Robot Report reported on 1 November that VicOne identified 28 zero-day findings in less than two days using AI-assisted research across software supporting physical AI, including projects maintained by Google, NVIDIA and Meta. All 28 were classified as zero-day vulnerabilities after initial validation. The count may change after vendor and vulnerability-authority review, and some have no CVE number yet. VicOne's data put 75% of the findings in development, training, simulation or validation tools, the stages before a robot is deployed.