Gilmour Space's Eris 1 Delays, Titan's Role in Exoplanet Research, and Mars Rover Breakthroughs

0:00 Anna: Welcome to Astronomy Daily, your regular dose

0:02 of the latest cosmic happenings and stellar

0:04 insights. I'm Anna, and we have an exciting

0:07 lineup for you today, packed with fascinating

0:09 developments from across the cosmos. First

0:12 up, we'll be checking in on Australia's

0:14 highly anticipated Eris 1 rocket, which has

0:16 faced some recent setbacks. Then we'll

0:19 take a deep dive into the fascinating world

0:21 of exoplanets, exploring how Saturn's

0:24 moon Titan is becoming a crucial benchmark

0:27 for understanding atmospheres far beyond our

0:30 solar system. We also have a dual report on

0:32 satellite news, covering a successful

0:35 European weather satellite launch and the

0:37 unfortunate loss of a critical methane

0:40 tracking satellite. Finally, we'll journey to

0:42 Mars, where NASA's Perseverance rover is hard

0:45 at work grinding into ancient rocks to

0:48 uncover clues about the Red Planet's past

0:50 habitability. So buckle up because

0:53 we're about to embark on an incredible

0:55 journey through space.

0:56 News okay, let's talk

0:59 about Gilmour Space's Eris 1 rocket. This is

1:01 a really big deal for Australia, as it's set

1:03 to be their very first orbital rocket.

1:06 However, its debut launch has faced a few

1:08 more hurdles, pushing back its highly

1:10 anticipated liftoff. Most recently, Gilmour

1:13 Space decided to stand down from its planned

1:15 July 2 launch, this citing the need for

1:18 a longer, more flexible launch window for our

1:20 first test flight. While a new target date is

1:23 expected to be announced next week, this

1:26 isn't the first time the Aris one has

1:28 encountered a delay. The rocket was initially

1:30 ready to fly back in May, but that attempt

1:33 was nixed due to an early trigger of the

1:35 vehicle's fairing. For those unfamiliar,

1:38 the fairing is the protective shell at the

1:40 very top of the rocket that shields its

1:42 payloads during launch. This particular

1:45 setback wasn't due to Mother Nature. Unlike

1:47 an even earlier delay, what happened was that

1:50 neighbouring components created a feedback

1:52 charge during a routine vehicle shutdown.

1:54 This engaged the fairing's single use

1:56 deployment protocols, essentially ejecting

1:59 the protective shell prematurely. Gilmour

2:01 Space explained that while shutdowns are a

2:03 normal part of launch operations, this

2:05 specific issue hadn't appeared in previous

2:07 tests. Because the fairing separation system

2:09 is a single use component only activated

2:12 when absolutely necessary to ensure its

2:15 reliability and safety. It was quite an

2:17 unexpected glitch. Prior to that May

2:20 incident, Gilmour was actually prepared to

2:23 launch Eris one as early as March, but that

2:26 first attempt was prevented by Tropical

2:27 Cyclone Alfred. So it's been a bit of a

2:30 challenging start for their maiden flight,

2:32 but the team is clearly dedicated to getting

2:34 it right. Gilmour Space, founded by brothers

2:37 Adam and James Gilmour in 2015 has

2:40 steadily grown and now boasts over 200

2:42 employees supporting their operations and

2:44 their Bowen Orbital Spaceport in Queensland.

2:47 The Eris 1 itself is a modest but capable

2:50 rocket. Standing 82ft or 25

2:53 metres tall, it's designed to launch payloads

2:55 of up to 474 pounds or 215

2:58 kilogrammes, into Sun Synchronous orbits.

3:02 This debut mission, named Test Flight 1, is

3:04 the first of several planned flights as

3:06 Gilmour Space works to qualify the new

3:08 vehicle's various systems. Despite the

3:11 setbacks, the founders of Gilmour Space

3:13 maintain a very realistic and practical view

3:16 of their expectations for this first flight.

3:18 They've emphasised that any measure of

3:20 success will be considered a win, as they put

3:23 it in a press release earlier this year,

3:25 whether we make it off the pad, reach max Q

3:28 or get all the way to space, what's important

3:30 is that every second of flight will deliver

3:32 valuable data that will improve our rocket's

3:35 reliability and performance for future

3:37 launches. This approach highlights their

3:39 commitment to learning and iterative

3:41 improvement, which is crucial in the

3:43 challenging world of rocket development. It's

3:46 m also worth noting that the upcoming launch,

3:49 whenever it happens, won't be streamed live.

3:52 However, Gilmour Space has committed to

3:54 providing updates through their social media

3:56 channels so we can all follow along with

3:59 their progress there. We'll certainly keep

4:01 you updated on the Eris one's next launch

4:02 attempt here on Astronomy Daily.

4:06 Moving from rockets to research let's turn

4:08 our gaze to a fascinating new study that

4:10 suggests one of our own solar system's moons.

4:13 Saturn's Titan, could hold the key to

4:15 understanding alien worlds light years away.

4:18 The NASA ESA Cassini Huygens mission,

4:21 which explored Saturn and its moons from 2004

4:24 to 2017, provided incredible

4:27 data, especially on Titan. The

4:30 probe closely examined Titan, even deploying

4:32 the Huygens lander to its surface, revealing

4:35 insights into its atmosphere, methane cycle

4:38 and rich prebiotic environment. These

4:41 findings, which led to speculation about

4:43 methanogenic life in Titan's vast methane

4:45 lakes, are now being leveraged for exoplanet

4:48 research with next generation observatories

4:51 like the James Webb Space Telescope or jwst.

4:54 We're moving from simply discovering

4:56 exoplanets to deeply characterising their

4:58 atmospheres, According to this new study.

5:00 Cassini's detailed examinations of Titan's

5:03 atmosphere can inform these attempts, serving

5:06 as an aspirational study to help astronomers

5:09 anticipate and overcome interpretation

5:11 difficulties. This significant research

5:14 was led by Prajwal Niraula, a graduate

5:17 student at MIT, and co author Juliette

5:20 DeWitt, an associate professor at MIT and

5:22 leader of its Disruptive Planet Group. Their

5:25 paper, currently under review for Astronomy

5:27 and Astrophysics, consulted data from

5:30 Cassini's Visual and Infrared Mapping

5:32 Spectrometer, or vims. VIMS

5:34 conducted high fidelity observations of Titan

5:37 using solar occultations, where sunlight

5:39 passing through an atmosphere is analysed to

5:42 detect chemical signatures. These

5:44 observations confirm Titan's atmosphere is

5:47 95% nitrogen and about 5%

5:49 methane with trace hydrocarbons. The

5:52 data also revealed Titan's methane cycle,

5:55 similar to Earth's water cycle, with liquid

5:57 methane forming clouds and raining onto the

5:59 surface. As Niraula and DeWitt

6:02 explained, the Cassini mission demonstrated

6:04 how challenging it can be to identify

6:06 molecules in atmospheres because different

6:08 chemicals can have similar absorption

6:10 features. This can lead to

6:12 mischaracterization with drastic implications

6:15 for determining a planet's habitability.

6:17 Their study's primary focus was to leverage

6:20 Titan's precise transmission spectrum and our

6:23 existing knowledge of its atmosphere to

6:25 investigate the strengths and limitations of

6:27 exoplanet atmospheric retrievals,

6:29 specifically assessing if misinterpretation

6:31 impacts only spectroscopic features or biases

6:34 other atmospheric properties.

6:36 Exoplanet atmosphere characterization has

6:39 advanced significantly. Previously,

6:42 astronomers relied on transmission spectra

6:45 during planetary transits. Thanks to

6:47 Webb, direct imaging of exoplanets based on

6:50 reflected light is now possible, a

6:53 monumental step forward. The core

6:55 challenge remains properly identifying

6:57 chemical spectra to determine biosignatures.

7:00 The team used the publicly available Tierra

7:03 model, a one dimensional spectroscopy code.

7:06 In this study, they expanded the model to

7:08 include a wider range of molecules and

7:10 account for the similarity of their

7:12 signatures based on existing astronomical

7:15 data. Their M findings revealed that spectral

7:18 signatures can not only be easily

7:20 misidentified, but such misidentification can

7:22 also bias other atmospheric parameters like

7:25 temperature. This highlights the crucial

7:28 connection between detection and retrieval

7:30 that wasn't previously fully appreciated.

7:33 What researchers choose as detectable

7:35 significantly affects their atmospheric

7:37 derivations. Another key insight relates

7:39 to identifying the dominant background gas in

7:42 an exoplanet's atmosphere, even if it lacks

7:44 strong absorption features like nitrogen.

7:47 This is crucial for understanding the

7:49 atmospheric chemistry and provides essential

7:52 context for interpreting trace gases,

7:54 including potential biosignatures.

7:57 As the exoplanet census grows, the search for

8:00 habitable planets is entering a sophisticated

8:02 phase. Webb has already shown its ability to

8:05 characterise exoplanet atmospheres and make

8:07 direct detections like TWA7.

8:11 Soon, Webb will be joined by the Nancy Grace

8:13 Roman Space Telescope and powerful ground

8:16 based observatories like the Extremely Large

8:19 Telescope, Giant magellan telescope and

8:22 30 metre telescope. These will enable more

8:25 direct imaging and detailed

8:26 characterizations. The ability to

8:29 properly identify potential biosignatures is

8:31 is indispensable for finding an Earth 2.0

8:34 quote or other habitable exoplanets.

8:37 Niraula and DeWitt believe their work will

8:39 help the community transition into this new

8:41 era of information rich data. They emphasise

8:44 the need to ask what can we reliably say from

8:46 this data? They break this down further

8:49 what can we reliably say given our current

8:51 models, and what could we say if we had

8:54 perfect models? The first helps account for

8:57 current limitations where models not data

8:59 quality are bottlenecks. Not accounting for

9:02 model induced noise leads to overconfidence.

9:05 The second question identifies dominant model

9:07 limitations, showcasing the depth of science

9:10 achievable with targeted upgrades. It's a

9:13 call to refine our tools as much as our

9:15 observations.

9:17 Now let's pivot from looking far beyond our

9:20 solar system to the instruments orbiting much

9:22 closer to home with some mixed news from the

9:25 satellite world. On one hand, there's been a

9:28 successful launch that will aid in

9:29 environmental monitoring.

9:31 SpaceX's Falcon 9 recently launched a

9:34 European satellite designed with a dual to

9:37 collect vital weather data and to monitor

9:39 atmospheric pollution. This successful

9:41 deployment adds to our growing capabilities

9:44 to keep an eye on our planet's changing

9:45 climate from above. However, on the other

9:48 side of the coin, we've received some

9:50 disheartening news about another crucial

9:52 satellite. Methane Sat, which was

9:54 anticipated to revolutionise our view of

9:56 methane emissions, has unexpectedly lost

9:59 power less than 1 year and 1/2 after its

10:01 launch. According to a statement from the

10:04 Environmental Defence Fund, the nonprofit

10:06 organisation that launched and operated the

10:08 satellite, MethaneSat is likely not

10:10 recoverable. This loss is

10:13 a significant setback for global efforts to

10:15 track and curb methane emissions, which are a

10:18 major contributor to the rise in global

10:19 temperatures. Launched in March

10:22 2024, MethaneSat joined a growing

10:25 constellation of satellites dedicated to

10:27 detecting invisible methane emissions from

10:29 key sources like oil and gas wells, livestock

10:32 landfills and wetlands. While other

10:34 satellites focused on individual sources or

10:37 broad regions, MethaneSat was uniquely

10:39 designed to detect methane at a middle scale,

10:42 making it ideal for spotting emissions from

10:44 oil and gas production. The

10:46 satellite, which cost nearly $100 million to

10:49 build and launch, began collecting data in

10:52 June of last year and released its first

10:54 detections of methane from oil and gas basins

10:57 in November 2024. Researchers

11:00 were actively working on automating data

11:02 processing to deliver near real time

11:04 information on emissions. The Environmental

11:07 Defence Fund reported losing contact with the

11:09 satellite on June 20, and after exhausting

11:12 all options to restore communications, they

11:15 confirmed the power loss. The

11:17 MethaneSat team is still investigating the

11:20 exact cause of the malfunction. They will

11:22 continue to share the valuable data the

11:24 satellite managed to collect before its power

11:26 failure, along with the algorithms developed

11:29 to analyse it. While it's a significant blow,

11:31 the Environmental Defence Fund hasn't ruled

11:33 out launching another satellite in the future

11:36 to pick up where MethaneSat left off

11:39 from satellites orbiting Earth.

11:41 Lets now journey to Mars, where NASA's

11:43 Perseverance rover is literally digging

11:45 deeper into the Red Planet's geological past.

11:49 The M rover has shifted its focus from

11:51 primarily scouting and sampling to more

11:53 detailed on site science, beginning to grind

11:56 into Martian rock surfaces to expose

11:59 material that could hold crucial clues to the

12:01 planet's ancient environment and potential

12:03 habitability. Earlier this month,

12:06 Perseverance used its abrasion tool to scrape

12:09 away the top layer of a rocky Martian outcrop

12:11 it affectionately nicknamed Kenmore.

12:14 This procedure, which combines mechanical

12:16 grinding with a, uh, gas blast cleaning,

12:19 reveals a fresh surface for close up

12:21 analysis. The goal is to study rock

12:23 interiors that haven't been altered by

12:25 billions of years of wind, radiation or dust.

12:28 Interestingly, Kenmore was a weird,

12:30 uncooperative rock, according to Ken Farley,

12:33 Perseverance's deputy project scientist. He

12:36 explained that visually it looked promising

12:38 for a good abrasion and possibly sample

12:40 collection. However, during the process

12:43 it vibrated excessively and small chunks

12:46 broke off. Fortunately, the team managed to

12:49 get just deep enough below the surface to

12:50 move forward with their analysis.

12:53 Perseverance employs an advanced abrading bit

12:55 and a gaseous dust removal tool, or

12:58 gdrt, which applies five puffs of nitrogen

13:01 to clear samples. This method poses less

13:04 risk of contamination compared to earlier

13:06 rovers that used brushes to sweep debris

13:08 away. Once an abrasion is complete,

13:11 Perseverance's sophisticated science

13:13 instruments are deployed to investigate the

13:15 exposed rock. The rover's Watson Imager,

13:18 which stands for Wide Angle Topographic

13:20 Sensor for operations and engineering, snaps

13:23 detailed close up photos. Its supercam

13:26 then uses laser pulses to analyse the

13:28 composition of vaporised material with one

13:31 spectrometer and studies visible and infrared

13:34 light reflected from the freshly exposed

13:36 surface with another. The initial

13:38 findings from Kenmore are already revealing

13:41 fascinating insights. The tailings or

13:43 abraded debris showed that this rock contains

13:46 clay minerals which are composed of water as

13:49 hydroxide molecules bound with iron and

13:51 magnesium. This composition is relatively

13:54 typical of ancient Mars clay minerals. The

13:56 abrasion spectra further provided the

13:58 chemical composition of the rock, showing

14:00 enhancements in iron and magnesium.

14:03 Perseverance also relies on its SHERLOCK and

14:05 PIXL instruments, which are designed to scan

14:08 habitable environments with Raman and

14:09 luminescence for organics and Chemicals and

14:12 planetary instrument for X ray

14:14 lithochemistry, respectively. These tools

14:17 help determine mineral content, chemical

14:19 composition, and potential signs of past

14:21 water activity or even microbial life.

14:24 Not M only did they confirm the presence of

14:26 more clay, but they also detected feldspar,

14:30 a mineral common in Earth's crust, the Moon,

14:32 and other rocky planets. Crucially,

14:35 the team also found manganese hydroxide in

14:38 the observed specimens. For the very first

14:40 time, this work is being carried out in

14:42 Mars Jezero Crater, a vast basin

14:45 spanning 28 miles wide that once hosted a

14:48 river delta and a lake. Scientists

14:51 believe this region contains some of the best

14:53 preserved records of Mars wet past,

14:56 making it a prime location to search for

14:57 biosignatures or indicators of ancient life.

15:01 Kenmore marks the 30th Martian rock that

15:03 Perseverance has studied in such fine detail.

15:07 The data being obtained from rocks like

15:08 Kenmore is invaluable for future missions,

15:11 providing a much clearer idea of what types

15:14 of rocks can be easily traversed, sampled, or

15:17 even used as construction material for

15:19 habitats. Perseverance is also

15:21 continuing to collect rock core samples,

15:24 sealing them in tubes for a possible future

15:26 return to Earth through the planned Mars

15:28 Sample Return campaign, although it's worth

15:31 noting that the recently released fiscal year

15:33 2026 NASA budget

15:36 proposal from the Trump administration

15:38 suggests cutting the Mars Sample Return

15:40 programme altogether, highlighting ongoing

15:43 uncertainties for this ambitious endeavour.

15:46 That brings us to the end of another

15:48 captivating episode of Astronomy Daily.

15:51 We've covered some truly exciting ground

15:53 today, from the ongoing Saga of Gilmour

15:55 Space's Eris 1 rocket and its journey towards

15:58 launch to how Saturn's moon Titan is helping

16:01 us decode the mysteries of exoplanet

16:03 atmospheres. We also discussed the latest

16:06 in Earth orbiting satellites, including a

16:09 successful weather satellite launch, and the

16:11 unfortunate loss of the crucial methanesat

16:14 before taking a deep dive into Mars with the

16:16 Perseverance rover's fascinating discoveries

16:19 in the Jezero Crater. Thank you for joining

16:22 me, Anna, on this celestial journey through

16:24 the latest in space news. If you want to dive

16:27 deeper into any of these stories or catch up

16:29 on previous episodes, be sure to visit our

16:31 [email protected] While

16:34 you're there, you can sign up for our free

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