China's Space Program News Thread

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Colonel
Is that the sun?
Its huge!

Isn't that the suspended dust in Martian atmosphere has diffused the sun light. Since Mars is distant from the sun than earth, it's supposed to be smaller.

The more interesting thing is we don't see this kind of phenomenon on Earth. Here on Earth we simply see the Sun reducing in brightness changing to orange or red color before disappearing below the horizon.
 

Xizor

Captain
Registered Member
The more interesting thing is we don't see this kind of phenomenon on Earth. Here on Earth we simply see the Sun reducing in brightness changing to orange or red color before disappearing below the horizon.
Yes. That's likely because of the refraction of the atmosphere.Mars has relatively thin one and therefore nothing like the color changing spectacle dawn and dusk.
 

winword

Junior Member
Registered Member
Yes. That's likely because of the refraction of the atmosphere.Mars has relatively thin one and therefore nothing like the color changing spectacle dawn and dusk.
Sunrise and sunset on Mars appears to be blue due to the dust scattering.
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Sometimes you can also see a blue sun on earth in a dust storm.
 

Richard Santos

Captain
Registered Member
It's kind of odd NASA only did it very recently like 3 months back after decades of rover Mars exploration.

Mars polar lander of 1999 had a microphone to record surface sounds on Mars. The probe crashed during landing.

The microphone on the Polar lander was not one of the priority instruments for mars science team to replace in a subsequent lander, so it it didn’t get replaced until 20 years later.
 

taxiya

Brigadier
Registered Member
2030 for initial manned moon landing, or 2035 for the ILRS?

Because the aim to achieve a manned moon landing before 2030 (per the slide), AIUI, was described to be achievable using two CZ-5DY launches (a triple, and a single), so it wouldn't need either any variant of CZ-9 to begin with
I was referring to the 2nd phase moon landing in the road-map laid out around 2010 in Long Lehao's paper and another paper by 8th institute in 2009. I was wondering if that date still stands, or the plan has changed.

Two CZ-5DY moon landing before 2030 was called phase I. I never really believed it being serious by CNSA, so it isn't the concern here (not mine at least).

The ILRS, as I understand it, consists of multiple phases between 2025 to 2035+, and the earliest in which an ideal "super heavy" is projected to be needed will be in the early 2030s to launch bigger payloads to the moon, and a manned launch to the ILRS will only occur sometime after the mid 2030s.
That is also my understanding.

What I wonder is whether the initial launches to the ILRS can be done with CZ-5DY, depending on how heavy the payloads are, meaning the "requirement" for the super heavy capability of CZ-9 might not truly emerge until the early 2030s, which could allow CZ-9(21) to be pursued with complete abandonment of CZ-9(11) without compromising their projected launch plants.
Highly doubt. The size of a single ILRS module has to be similar to CSS that is 20 to 25t to be able to accommodate 3 people which is a minimum crew. To put 25t on the moon surface in one piece, the LTO(TLI) capacity is at least 50t which translate to a mass of around 150t in LEO. "multiple launch and LEO assembly" was actually considered by CNSA a decade ago, but was killed for its high risk of mission failure (and long time orbit fuel storage). Both CNSA and NASA are now pursuing moon orbit rendezvous. So it is highly unlikely that CNSA will bring back this dead idea when there is no recent solution of the problems that they unticipated.
 
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Xizor

Captain
Registered Member
It's worthwhile to notch up milestones regarding the technologies nations deploy in their mars Probes.

But it's also important to note that neither China or USA has explored the limits regarding the technologies that can be deployed in mars. Both are hamstrung by the peanuts allocated in funding.

Hope that they find hydrocarbons in Mars.
 

siegecrossbow

General
Staff member
Super Moderator
It's worthwhile to notch up milestones regarding the technologies nations deploy in their mars Probes.

But it's also important to note that neither China or USA has explored the limits regarding the technologies that can be deployed in mars. Both are hamstrung by the peanuts allocated in funding.

Hope that they find hydrocarbons in Mars.

You kinda need oxygen to burn hydrocarbon and there isn’t that much of it on Mars. Either way, it is not economical to transport goods between Mars and Earth unless there is a breakthrough in propulsion technology.
 
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