Swift falls on 4 November, and the telescope news that outlived it

The end is scheduled, more or less. NASA's Neil Gehrels Swift Observatory should re-enter Earth's atmosphere on Wednesday 4 November, at around 3:30AM ET give or take 11 hours, according to The Verge's report on 3 November. Most of the spacecraft will burn up. Some components probably will not.

Swift weighs about 3,200 pounds and measures 5.6 metres high by 5.4 metres wide, solar arrays included. NASA puts the chance that any surviving fragment harms someone on Earth at roughly 1 in 2,100. The agency limits the possible fall zone to between 20.6 degrees south and 20.6 degrees north latitude because of the observatory's low inclination. The agency and the US Space Force are still tracking the descent.

The failure was mechanical, not cosmic. In July NASA backed a plan to boost the telescope upward with a private spacecraft. That attempt died when the vehicle ran into attitude control problems, as both The Verge and ABC News reported. By 20 October Swift had decayed to 275 kilometres and was shut down, ABC News notes. That means no propulsion is left to steer it or to choose where it comes down.

Two predictions, one uncontrolled object

Forecasts for the moment of re-entry do not agree, and neither report settles the question. ABC News, citing the NASA-funded Space Weather Operational Readiness Development programme, gives about 4:37am AEDT on 4 November with a margin of a few hours. The Aerospace Corporation, in the same report, gives 8:11pm AEDT on 4 November with a margin of 12 hours. Both fall within the uncertainty NASA itself has published.

Where it lands is a different question, and the honest answer is that nobody knows yet. The orbit crosses northern Australia as far south as Mackay, Tennant Creek and Marble Bar. It also passes over Africa, India, South-East Asia and parts of the Americas, ABC News reports. Brad Tucker of the Australian National University put the odds in plain terms for the same outlet: "If 70 per cent of the Earth is ocean, 30 per cent is land. So three out of 10 times it's on land, not ocean."

Swift launched in November 2004 on a two-year prime mission to trace gamma-ray bursts. It then kept working as a general multi-wavelength observatory for two decades. Space.com reported on 1 November that the spacecraft carried three instruments: a Burst Alert Telescope, an X-Ray Telescope and an Ultraviolet/Optical Telescope. Its operations team at Pennsylvania State University sent the command that ended operations. "It may not be as big or as popular as Hubble or James Webb Space Telescopes, but we have used it for ages," Tucker told ABC News.

"It is unfortunate that Swift was not 'reorbited,' but from a reentry hazard perspective it is a small..."

That quote comes from Darren McKnight, a senior technical fellow at LeoLabs, in Space.com's 1 November piece, which was cut off at that point. The same article carries a number worth keeping. There are 10 times more objects re-entering the atmosphere each year than there were five years ago, driven by low Earth orbit constellations and hardware refresh cycles. Swift is one object. It is not an anomaly.

What the working telescopes are doing

The more interesting science this week is happening elsewhere. On 2 November, Space.com reported that James Webb Space Telescope observations show the interstellar comet 3I/ATLAS was built from tiny ice grains mixed with dust. That makes it unlike the comets of our own solar system but similar in composition to icy bodies beyond Neptune. The comet was discovered entering the solar system in summer 2025. It is only the third interstellar object found, after 1I/'Oumuamua in 2017 and 2I/Borisov in 2019.

Martin Cordiner of NASA's Goddard Space Flight Center and the Catholic University of America co-authored the new paper. He also leads the Webb programme studying such objects. He said in a statement quoted by Space.com: "We designed [JWST] to be ready the moment an active interstellar comet was found and to follow it over time." Researchers estimate 3I/ATLAS formed in a planet-forming disk around a young star, possibly 10 to 12 billion years ago, more than twice the age of our solar system.

The exoplanet side of the telescope beat is louder and less settled. Recent headlines include a Webb find described as a lemon-shaped exoplanet, a claim of something "remarkably Earth-like" on a nearby world, and a report of helium detected at LHS 1140b. None of those stories appears in full in the reports available, so none of their numbers belong in this piece.

One broader point about how telescope results reach the public does hold. The arXiv preprint listed on 2 November, on researcher-in-the-loop evolutionary discovery of entanglement-assisted quantum code families, is the kind of primary document that usually sits behind a press release. The same pattern applies to exoplanet claims. The peer-reviewed paper or the preprint is the thing to read, and the headline is a summary written by someone else.

The infrastructure behind the headlines

None of this happens without machinery, and the machinery is having a busy week of its own. Ars Technica reported on 2 November that the Smithsonian completed a seven-year, nearly $1 billion renovation of the National Air and Space Museum's flagship building in Washington, DC. The final gallery, "At Home in Space", opened on 30 October. Curator Jennifer Levasseur described the exhibition as the story of long-duration spaceflight, from the shuttle era to more than 25 years of continuous human presence on the International Space Station. She told Ars Technica that the flown spacesuit on display is "the first and potentially only public display of a fully flown set of EMU equipment in the world".

Robots are part of that story too. Space.com's photo feature on 3 November describes the Astrobee cubes aboard the station. The first two, Bumble and Honey, arrived in 2019, with a third, Queen, following later that year. NASA astronaut and Crew-13 commander Jessica Watkins took the image in the station's Kibo laboratory. Seven years on, the programme is still running.

Further out, the hardware questions get harder. Space.com reported on 3 November that the number of Starship refuelling flights needed to land astronauts on the Moon under Artemis IV remains unresolved. A 2021 Government Accountability Office audit estimated up to 16. A member of the Aerospace Safety Advisory Panel said earlier this month it could be as high as 22. Elon Musk posted on X that it would be closer to six or eight. NASA has published a graphic setting out the order of operations for the mission. An SLS rocket carries four astronauts in an Orion capsule to high Earth orbit to dock with the Starship lander.

There is also a commercial layer. TechCrunch reported on 2 November, citing The Washington Post, that SpaceX is looking to buy Boost Mobile from EchoStar, which has about 7.5 million customers across Boost Mobile and Gen Mobile. The same report notes that SpaceX bought $17 billion of wireless spectrum from EchoStar last year. It also notes that Boost leases capacity from AT&T and T-Mobile, whose approval may matter. The companies now central to launching and operating space hardware are also telecoms players.

How to read the next exoplanet story

For readers trying to follow the telescope beat, the Swift case offers a useful discipline. The claims that hold up are the ones with a document behind them: an orbital decay figure, a re-entry probability, a paper with named authors. The claims that wobble arrive as a single adjective, "Earth-like" being the usual offender, with no mass, radius, temperature or atmospheric measurement attached.

Webb's result on 3I/ATLAS is a good example of the first kind. It is specific, it is comparative, and it is attributed to a named researcher and a named programme. The comet's ice grains resemble trans-Neptunian objects rather than solar system comets. That tells astronomers something about how material condenses in other planetary systems. It is a modest finding, stated modestly, and it will still be true next week.

Swift will not be. NASA's blog is carrying updated predictions, and the final orbit track will narrow in the last couple of passes, as ABC News explains. Until then, the telescope is a 1,500-kilogram object moving at about 8 kilometres a second with no way to steer. The most useful thing anyone can say about it is the probability NASA already published.