First Frenchwoman in Space Steps Outside

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Anna: Hey everyone. Welcome back to Astronomy

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AstroDailyPod. I'm Anna.

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Avery: And I'm, um, avery. It's Wednesday, August

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19th, series five, episode

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171.

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Anna: We've got a genuinely historic one to lead

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with today.

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A spacewalk outside the space station that

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didn't go entirely to plan, but

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still made history.

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Avery: First French woman to ever walk in space.

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Then it got complicated.

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Anna: Then a trillion mile river of gas that's

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been quietly bending a baby solar system out

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of shape. An update on a storey we thought

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we'd closed last episode. And SpaceX

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quietly cruising past a satellite milestone

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that would have sounded like science fiction

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a decade ago.

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Avery: Plus tonight. Well, actually tomorrow morning

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before dawn. One of the best reasons all year

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to drag a telescope outside.

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Anna: Lots to get through. Let's get into it.

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Avery: So yesterday, August 18, ESA astronaut

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Sophie Edeno, uh, became the first French

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woman ever to conduct a spacewalk, which is

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Anna: worth sitting with for a second. France has

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had astronauts in space since the 1980s,

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and women astronauts too. But nobody from

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France had actually stepped outside and

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worked in a suit until yesterday. Jean Luc

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chretien did France's first spacewalk, all

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the way back in 1988 on Mir.

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It took almost 40 years for a French woman to

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get that chance.

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Avery: Who was she out there with?

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Anna: NASA's Anil Menon. This was actually his

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second EVA. His first back on August

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6th got a bit tense when his suit flagged an

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unexpected carbon dioxide sensor reading. It

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came back to normal. But out of caution, the

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follow up spacewalk got pushed from August

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13th to the 18th while they double checked

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everything.

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Avery: Good call, given what suits are for. So what

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were they actually out there to do?

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Anna: Replace one of the station's space to ground

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antennas. NASA calls it a scant. It's a

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critical communications link that lets

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mission control in Houston talk to the

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station at high speed. The ISS carries

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two for redundancy. You only strictly need

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one working, but managers like having a

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spare.

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Avery: So this was meant to be a fairly routine

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swap.

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Anna: That was the plan. Six and a half hours were

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budgeted. They got the old failed antenna

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disconnected, freeing the power and data

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cables working in the locking pins,

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unbolting the whole assembly. But every one

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of those steps took longer than expected. A

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lot of it came down to just brute physical

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effort with a ratchet wrench in a pressurised

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suit.

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Avery: And, um, they ran out of time.

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Anna: They ran out of time. 6 hours

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23 minutes in the

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282nd spacewalk in Station history.

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For the record, flight controllers made the

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call not to push for the full task Though the

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failed antenna is secured near its mounting

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boom rather than fully stowed, and the

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replacement antenna is still sitting on its

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storage platform uninstalled.

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Avery: So it's a historic spacewalk with an asterisk

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on the actual job list.

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Anna: Pretty much. The good news is nothing about

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this is urgent. The working antenna is still

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doing its job, so the station isn't missing

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any communication capability. NASA's already

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got another spacewalk scheduled next Tuesday

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and controllers are figuring out whether to

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prioritise finishing this antenna swap then

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or push it to a later EVA in favour of

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other planned work.

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Avery: Uh, but the headline stands. Regardless of

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how the antenna paperwork shakes out, it

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does.

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Anna: First, French woman outside the station doing

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real hands on maintenance work in a suit

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that's basically its own spacecraft. That's

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the storey antenna or no antenna. Next

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up, a storey about why some planetary

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systems end up lopsided instead of neat

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and orderly like ours.

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Avery: Neat and orderly is relative, but sure, go

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on there.

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Anna: So there's a young triple system called

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GW Orionis, about 1300

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light years away in the constellation Orion.

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It's a favourite target for astronomers

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because it's got a genuinely strange

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warped protoplanetary disc, the ring

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of gas and dust where planets are forming,

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split into several misaligned rings

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instead of one flat disc like you'd expect.

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Avery: And now we know why.

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Anna: We've got a, uh, very strong new answer. A

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team led by Maria M. Galloway Spritsma, a

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PhD student at the University of Florida,

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working with her advisor Jehan they and

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collaborators from the Max Planck Institute

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for Astronomy, University of Galway and Queen

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Mary London University, used the ALMA

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Telescope Array in Chile to trace a

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stream of gas flowing into the system from

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outside.

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Avery: How big a stream are we talking about?

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Anna: 1.2 trillion miles long.

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That's roughly 0.2 light years, or

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12,600 astronomical

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units, feeding in from well beyond the system

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itself. They traced it using carbon

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monoxide, because the molecular hydrogen that

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actually makes up most of the gas is

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invisible at radio wavelengths. CO

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acts as a stand in tracer

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Avery: and this stream is what's warping the disc.

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Anna: That's the finding when the team modelled how

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the streamer's gas falls into the system. The

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angle it comes in at lines up closely with

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the tilt of the disc's outer ring, the one

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furthest out roughly 31.6

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billion miles from the centre, well beyond

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the two inner rings at, uh, 4.1 and

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17.4 billion miles. The

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streamer is essentially shoving the outer

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edge of the disc out of alignment with the

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rest of the so this

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Avery: isn't just a quirky one off storey about one

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weird system.

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Anna: That's exactly the bigger point. Bay put

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it. If these gas streamers turn out to

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be common around young stars, they'd

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naturally explain why planets don't always

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end up in neat, orderly orbits like our solar

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systems. They can come out with, in his

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words, much, much more random

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orientations.

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Avery: So this could be a piece of the puzzle for

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all those exoplanets we found with weirdly

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tilted or even backwards orbits.

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Anna: Exactly that puzzle. The results were

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published August 6th in the Astronomical

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Journal, and the team's next step is a

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systematic survey of young stars to see just

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how common these streamers actually are.

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Avery: From, um. Why is this one system so messy

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to maybe messy is just normal

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Cosmic

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Anna: order might be the exception, not the rule.

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Avery: Quick follow up now, and a bit of a

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correction to how we left things last

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episode. Let's say we have some new

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information, right?

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Anna: On Tuesday's Show we said SpaceX had

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completed recovery of Starship's ship 40,

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which splashed down intact in the Indian

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Ocean and got towed towards Western

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Australia. Turns out that wasn't

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quite the end of the storey.

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Avery: What have we got wrong? Or let's say, what's

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changed?

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Anna: Nothing we said was fabricated. The ship

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really was secured and under control, which

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is the initial reporting we had captured. But

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the fuller picture that's emerged since is

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that ship 40 wasn't parked at a mainland

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Australian port. It's been under a much

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longer tow and as of yesterday, August

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18, it arrived in sheltered waters off

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Christmas island, the Australian territory,

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out in the eastern Indian Ocean.

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Avery: After how long a drift? Total?

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Anna: 24 days and more than 400 kilometres

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of drift, all told, since that July

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24th splashdown on Flight 13.

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Avery: So why stop at Christmas island instead of

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going straight to a mainland port?

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Anna: Sheltered water. It gives SpaceX's

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engineers, who are now travelling out to the

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site, a calm place to do a closer inspection

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and stabilise the vehicle for the next leg of

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the journey, which is transporting it all the

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way back to Starbase in Texas for full

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teardown and analysis. Exactly how

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they'll move a 171 foot stainless steel

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rocket that far hasn't been detailed yet.

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Avery: And Musk's take on all this?

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Anna: He's framed the intact recovery as

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valuable data that would otherwise have been

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lost, and said it strengthens the case for

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attempting an actual tower catch of a

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returning ship as early as Flight 14.

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Avery: Though, uh, the saga isn't closed after all.

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Just entered a quieter chapter.

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Anna: Consider this the correction recovered and

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stable? Yes. Home free? Not yet.

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We'll flag it again if there's a real

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resolution.

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Last storey and a quick one. SpaceX

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hit a couple of milestones at once on Tuesday

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night.

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Avery: Lay it on us.

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Anna: Tuesday night's Starlink 1750

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mission lifted off from Vandenberg Space

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Force Base in California, sending up 24

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more broadband satellites. That launch was

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SpaceX's 97th Falcon 9 flight of

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the year and its 100th mission overall

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for 2026. All types of missions

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combined.

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Avery: Hundred missions with four months of the year

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still to go.

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Anna: And with those 24 new satellites, the

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Starlink Constellation is now sitting at

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nearly 11,000 operational satellites

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in orbit, a scale that genuinely didn't

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exist as a concept in spaceflight a decade

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ago.

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Avery: What about the booster?

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Anna: Anna B1097, flying for the

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12th time, targeted a landing on the drone

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ship. Of course I still love you. Out in the

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Pacific, about eight and a half minutes after

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liftoff, that booster's flown everything from

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The Twilight and Transporter 17 rideshare

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missions to Sentinel 6B and A batch of

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previous Starlink launches.

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Avery: At this point, a Starlink launch barely makes

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headlines on its own merits. But quietly

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approaching 11,000 satellites is the kind of

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number that sneaks up on you.

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Anna: It really is one of those stats that's easy

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to lose track of because the launches

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themselves have become so routine, worth

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pausing on occasionally.

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Avery: Finally, a quick one before we go. And this

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one's worth setting an early

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Anna: alarm for if you're up before dawn tomorrow

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morning. Saturn is putting on one of the best

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views of the year. Its rings are unusually

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narrow and shallowly tilted right now, only

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about 7.5 degrees relative to us,

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which lines its major moons up almost in

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a straight row extending out from the

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planet's equator. Astronomers have taken to

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calling it a moon parade. What can you

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actually pick out with a small telescope?

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Titan is easy. It's the brightest at

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magnitude 8.4. Step up

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to a 4 to 6 inch scope and you can pick out

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Rhea Thetis and Dione as well. If

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you've got an 8 to 10 inch instrument,

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IAPetus and Enceladus come into range too.

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Saturn itself sits in the south southeast in

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the hours before sunrise. Medium to high

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magnification, somewhere around

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120-200x, gives you the best

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view of the whole lineup.

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Avery: And, um, if you're out earlier tonight

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Anna: before bed, you'll catch a waxing crescent

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moon in the evening sky. Nothing dramatic,

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but a nice preview before the real show rolls

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around. Before dawn.

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Okay, that's today's episode. A history

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making slightly unfinished spacewalk from

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Sophie Adineau and Anil Menon, a trillion

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mile river of gas explaining why some planets

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end up tilted, an update on Starship

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ship 40 as it makes its way to Christmas

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island and SpaceX quietly closing in

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on 11,000 satellites in orbit.

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Avery: Plus Saturn's moon parade before dawn

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tomorrow. If you can drag yourself out of bed

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for it.

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Anna: If you enjoyed today's episode, the best

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thing you can do for us is leave a rating or

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review wherever you're listening and share it

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with a fellow space nerd. Full Show Notes,

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sources and links for every storey we cover

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today are @astronomydaily IO

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and you can find us on social media. We're

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astrodaily pod pretty much everywhere.

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Avery: We'll be back tomorrow with more from the

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world of space and astronomy. Until then,

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keep looking up.

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Anna: See you next time. Clear skies everyone.

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Avery: Mhm.

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Anna: Soul.