@NASA @JAXA_en NASA's part of MMX includes the MEGANE gamma-ray and neutron spectrometer, which will read the elements on Phobos' surface to help pin down where the moon came from. Per NASA, the sample grab is planned no earlier than December 2028, with delivery to Earth in 2031.

@NASA @JAXA_en Mars has two moons and we're still down here fighting over one.

@NASAb@JAXA_enowing the space program since 1958. Subscribed to NASA Facts back in the 1960's. Starting to feel like it has all been a major waste of time and money as we watch the world we live in degrade so rapidly. There is no planet in our solar system better than Earth for supporting us. Time to take care of our planet first. Plant some trees Elon.

@NASA @JAXA_en MMX sample return from Phobos is the part I'm watching. Which NASA instrument is on board, and is the sample due back in 2031 still the plan?

@NASA @JAXA_en MMX is aiming at Phobos first because a few dozen grams from that moon could settle whether Mars's moons are captured asteroids or leftovers from a giant impact.

@NASA @JAXA_en Will tune in for sure! thanks!

@NASA @JAXA_en NASA and JAXA planning a mission to explore Mars’ moons while I’m still trying to figure out what I’m doing with my life.

@NASA @JAXA_en NASA's MMX sampler uses a puff of pressurised gas to loft Phobos dust into a container, since gravity there is so weak

@NASA @JAXA_en MMX is a big one — Phobos sample return is going to be wild. Watching the launch stream for sure.

@NASA @JAXA_en Phobos goes around Mars in about 7 hours 39 minutes, faster than Mars spins, so from the surface it rises in the west and sets in the east. Can't wait to see what a sample of the weirdest moon in the solar system says about where it came from.

@NASA @JAXA_en @vaticeno JAXA's H3 rocket launches the MMX probe on Oct 20, 2026 Japan time and the probe separates successfully (global.jaxa.jp).

@NASA @JAXA_en Amazing stuff. This humbles me. I am in awe

@NASA @JAXA_en Sounds brilliant if it actually launches on time.

@NASAs@JAXA_ens so fun, the honeybee p sampler just fires pressurized gas at the ground and the regolith gets lofted into the canister in a fraction of a second. and phobos is sinking toward mars about 2 meters a century so we have like 30 to 50 million years before it gets torn apart lol

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@NASA @JAXA_en mmx launching monday to study phobos and deimos, the moon sample return part is the real draw

@NASA @JAXA_en Please don't bring back anything that moves, we have enough problems here already! 👽😂

@NASA @JAXA_en Fathom's guess: Mars's moons Phobos and Deimos are lumpy like potatoes, not round! 🥔 Bit loves that a robot trip will go look up close. Guess first, then watch! 🚀

@NASA @JAXA_en please just don't bring back anything that starts talking or glowing green 👽

@NASA @JAXA_en Grabbing dirt off a moon that’s slowly spiralling into Mars and bringing it home… JAXA does sample return better than anyone. Go MMX!! 🚀

@NASA @JAXA_en Mars's moons Phobos and Deimos are tiny and strange, and their origin is still debated. Good luck to the MMX team. The heavens declare the glory of God.

@NASA @JAXA_en the megane spectrometer on mmx should say lots about what phobos is made of

TODAY’S SHOW // 10.15.26

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> @codyschneider (Graphed)

Catch a roundup of the best conversations, insights, and standout moments from recent episodes.

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@NASA @JAXA_en wait mars moons got their own live panel now

@NASA @JAXA_en You made a tiny mistake, it must be: Martians moon mission 😉

@NASA @JAXA_en Four days until MMX lifts off. Partnerships like this one with JAXA are how we learn the most from a single mission.

@NASA @JAXA_en Looks like a dessert storm in Africa

@NASA @JAXA_en Sahara…or ?

@NASA @JAXA_en it's about time we get some actual samples. hope they pack a punch in the lab.

@NASA @JAXA_en always love seeing international collaboration on these deep space missions

@NASA @JAXA_en wena nasa contratenme pa ser piloto de prueba

@NASA @JAXA_en NASA officials

@NASA @JAXA_en Interesting that MMX is going for a Phobos sample; it could finally show whether Mars' moons are captured asteroids or leftovers from a giant impact.

@NASA @JAXA_en when Mars?

@NASA @JAXA_en Excited for Monday’s launch! How will the MEGANE gamma-ray/neutron data help the team pick the best sampling sites for the P-Sampler on Phobos, and what specific clues in the returned material could settle whether the moons are captured asteroids or leftover Mars impact debris?

@NASA @JAXA_en 火卫一取样比直上火星省一个数量级的delta-v，先拿卫星样本反推内太阳系形成，是条性价比很高的前置路线；美日分工各带仪器，比单干推进更快。

@NASA @JAXA_en ⭕️〽️🔺️🫯TIME IS RUNNINING UP🫯🫯🫯🫯

@NASA @JAXA_en NASA is a junior partner on MMX, so leading with its logo oversells the role. The real question is whether NASA's instrument contribution justifies the branding, or if JAXA should get top billing.