Questions tagged [the-moon]

Questions about Earth's Moon. Also for questions about spacecraft, manned missions, potential missions, etc. related to Earth's Moon.

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Temperature of the moon 4ft off the surface

If the surface of the moon is 100°C, what temperature would it be four feet off the surface, given the vacuum on the moon?
Tony's user avatar
  • 71
3 votes
2 answers
123 views

Intuitive machines IM-1 ("Odysseus") lunar lander: commercial sponsorship

Photographs including https://upload.wikimedia.org/wikipedia/commons/2/24/Intuitive_Machines%E2%80%99_Nova-C_lunar_lander_%28IM_00309%29_%28cropped%29.jpg appear to show this bearing a Sun ...
Mark Morgan Lloyd's user avatar
2 votes
1 answer
50 views

How much is the estimated amount of ilmenite present on Lunar surface?

I wanted to gauge estimated amount of ilmenite that can be extracted from Lunar regolith. From that, ultimately I want to derive the amount of oxygen that can be extracted out of it. Any estimate or ...
Prayag's user avatar
  • 117
7 votes
1 answer
159 views

Is TIG or laser welding feasable for building aluminum habitats either on the Moon or in orbit?

The question was originally spurred by Andy Weir's Artemis - in the novel oxyacetylene and neon are extensively used for cutting and welding. TIG or laser welding seem like the obvious choices for ...
Dakota's user avatar
  • 73
2 votes
1 answer
184 views

When would the Soviets have landed on the moon, if NASA had not beaten them to it? [closed]

I know that after the untimely death of Korolev, the crewed moon mission was having struggles, but could they have overcome them? What would their timeline have been? Side question/pure conjecture: ...
ijustlovemath's user avatar
-1 votes
0 answers
55 views

What delta-v for launching Trojan asteroids or outer Jovian moon ice to crash into the earth's moon (using Jupiter gravity assist)?

Is it feasible to utilize Trojan asteroids or an outer moon of Jupiter as a water resource for Luna (earth's moon)? What would be the approximate delta-v requirements to mine ice from a Trojan ...
deepthoughts408's user avatar
4 votes
1 answer
249 views

Shuttle-era mission profile for a desperation moon mission

It is 1996. For reasons best left to Worldbuilding SE, it has become a matter of civilizational life and death to send humans to the moon and bring them back to earth as soon as possible. Everybody is ...
Mark Foskey's user avatar
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19 votes
7 answers
9k views

What kept the Soviets from going to the Moon (before the US)?

I know that Saturn V's payload was 140 tons, about 20 times that of Soyuz. The Soviets did not have a functioning rocket with similar characteristics. But why? They had a head start in the space race ...
MWB's user avatar
  • 364
20 votes
3 answers
5k views

Why do the boot prints on the moon appear bright in some photographs or film?

I've seen that in some videos or photos of the moon mission, the boot prints appear brighter relative to the untouched ground: But in some other cases, they are the same brightness as the ground: Is ...
spaceamoeba1010's user avatar
8 votes
7 answers
2k views

Embedding foundations from low lunar orbit?

Reading about Lunar Crater Radio Telescope and Lunar regolith thickness and composition, (roughly 5-10m of soft soil) and anchoring in soft regolith, would it make sense, in order to anchor large ...
user721108's user avatar
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-2 votes
1 answer
162 views

Carving of rocks on the moon [closed]

Is it possible to automate carving of rocks on the moon? Was it possible in 1969 for Armstrong and Aldrin to carve rocks on the moon? Is it possible for the Pragyan rover as part of Chandrayaan 3 ...
Prashant Akerkar's user avatar
-3 votes
1 answer
228 views

How many people would have to keep it a secret if the U.S. hadn't walked on the moon? [closed]

For another question, @user answered: "The kind of people who dismiss the hundreds of thousands who worked directly on the Apollo project, the hundreds of thousands to millions who watched the ...
AoooR's user avatar
  • 99
12 votes
3 answers
5k views

What assumptions were made about the sphericity of the Moon for the Apollo program?

I've just been reading about the Apollo program. Apollo 8 seems to have gone into a fairly circular lunar orbit 69 miles at perigee. Apollo 10 was pretty much similar, although they dipped down with ...
mike rodent's user avatar
3 votes
1 answer
270 views

Where can I find the video of Apollo 16 floodlight mistaken with a UFO?

So, a few years ago (2004) NASA showed that a picture of a supposed UFO captured by the Apollo 16 astronauts through the window of the Command Module was in fact the floodlight protruding from the ...
Swike's user avatar
  • 2,501
1 vote
0 answers
199 views

Fastest time to Moon for Starship

What is the fastest time to the Moon possible with Starship in the near future, assuming there is orbital refueling? Is sustained acceleration and then deceleration possible at say 0.25G, to reduce ...
safe_malloc's user avatar
0 votes
3 answers
485 views

Images of Starry night sky (maybe with milky way galaxy) from the Moon?

For the Apollo missions, it has often been said that images of other stars/milky way galaxy could not be captured since they mostly landed in sunlit areas and the reflectance of moon's surface ...
anurag's user avatar
  • 219
22 votes
2 answers
5k views

Why can't lunar rovers survive long duration nights?

I saw that some missions end with the lunar night time, and the rovers are trashed permanently instead of trying to survive the night. The concerns have to do with trying to keep the rover at ...
sergbot's user avatar
  • 339
6 votes
2 answers
2k views

How did sulphur come up to the surface of the moon?

We know that the Chandrayaan-3 mission found the presence of sulphur on the surface of the moon. How did it come up to the surface of the moon if this element is supposed to be in the moon's core ...
Amal's user avatar
  • 164
13 votes
3 answers
4k views

Why do we need to make probes land on other planets or moons?

This is a very dumb question but I am really curious to know the answer. Today I was watching the live streaming of Chandrayan 3 landing on the moon (which it successfully did) and this question came ...
Ankit's user avatar
  • 265
8 votes
1 answer
210 views

Chandrayaan landing ellipse size and rationale

From what I hear about the Chandrayaan-2 failure analysis, the spacecraft overshot its landing ellipse and, while struggling to backtrack, crashed. I have been wondering why they had specified a ...
John McCarthy's user avatar
-8 votes
1 answer
225 views

How do you defend the following about the Apollo 11 mission? [duplicate]

I read that when the Apollo 11 spacecraft reached the earth's orbit then the engines burnt to initiate TLI(Trans-Lunar Injection) which increased the speed of the spacecraft to 24,500 miles per hour, ...
user51882's user avatar
3 votes
0 answers
171 views

What is the cheapest/simplest way to deliver a camera to the moon? [closed]

The primary objective is this: to deliver a camera to the moon that live streams to Earth throughout the journey AND once it arrives on the moon. A bonus is if it can then move around on the Moon. An ...
M. Guillaume's user avatar
19 votes
1 answer
5k views

Why does this journey to the moon take so long?

I remember the Apollo missions and I'm pretty sure it took about three days to reach the moon. India’s space agency is set to launch its homegrown Chandrayaan-3 moon mission from the southeastern ...
Tim Richards's user avatar
2 votes
0 answers
76 views

Is there a labelled equivalent of the NASA 4K moon texture files?

Does anyone know whether a labelled version of the NASA 4k moon texture files exists with the same projection? I would like to be able to overlay and switch between the photographic versions, and a ...
tomh's user avatar
  • 713
3 votes
0 answers
141 views

Energy Needed for Lunar Lander to Ascend?

Is it possible to calculate how much energy was expended when the Apollo 11 lunar lander ascended from the Moon's surface to join the Command Module in lunar orbit? Many relevant parameters for the ...
David_B's user avatar
  • 31
12 votes
0 answers
316 views

Different Earth-centered ICRF positions in GMAT and Skyfield/Spiceypy with DE421

I compared the Earth-centered positions from the Moon in the ICRF (i.e., in GCRF) using three different sources: SpiceyPy (https://pypi.org/project/spiceypy/) Skyfield (https://rhodesmill.org/...
Thibault's user avatar
  • 121
2 votes
0 answers
61 views

EPS sizing for lunar mission

As part of a university project, I am working on EPS sizing for a mission to the lunar environment. I have sized the SA and batteries, chosen the components and the PDCU; however, having never been in ...
andrescpa's user avatar
7 votes
2 answers
153 views

Would a laser seismometer work from lunar orbit?

Lasers today have become extremely sensible, they can detect sub-millimeter movements of a surface from a distance. Could this feature be exploited to create a lunar seismometer working from a probe ...
FluidCode's user avatar
  • 191
4 votes
1 answer
145 views

Would Li-Ion batteries for a lunar base energy storage system be transported to the base charged or uncharged?

I'm investigating lunar base power systems and energy storage systems (ESS). One option is photovoltaics (PV) and Li-Ion batteries. A large mass of batteries would be required to power the base during ...
nwsteg's user avatar
  • 143
26 votes
2 answers
6k views

Did Apollo astronauts spend any time on the lunar surface during lunar night?

Are there any images from the surface of the moon during lunar night? Preferably taken by Apollo astronauts, but otherwise by rovers etc showing "earthshine" on the lunar surface? I found ...
tomh's user avatar
  • 713
6 votes
2 answers
241 views

Is the crust of the Moon different on the near side and the far side?

If you assume that the origin of the Moon is due to an object hitting the Earth. The difference between far side and the near side of the Moon can be explained, if the 'chip' knocked off the Earth to ...
SR Clark's user avatar
4 votes
0 answers
125 views

What is the Delta V from the Moon to Earth Sun L1?

There are various proposals to build infrastructure at Earth/Sun L1 point, such as discussed in this question. From LEO the Delta V cost to L1 is about 3.5 kms or about kg of propellant in LEO for ...
GremlinWranger's user avatar
1 vote
1 answer
77 views

NASA CAPSTONE Radiation shielding

What solutions in radiation shielding or radiation effect mitigation were made on the NASA CAPSTONE mission? Specifically, anything related to radiation shielding is of interest. I'm having trouble ...
Benjamin Åkerlund's user avatar
0 votes
0 answers
62 views

If we make a Mars or moon station, how would the carbon and water cycle work if the Earth was destroyed? [duplicate]

If it costs 50k to fly 1 pound to space, how much would the machine cost? I'm a 7th grader and I need help on my project. How would the carbon and water cycle machines work? This is hypothetical.
user avatar
24 votes
3 answers
4k views

Why are tunnels not popular considerations for Lunar or Mars colonies?

In many modern movies, books, articles, blogs, renders etc which talk about colonies on Mars or the Moon, I often see things like habitation modules or 3D/SDL printed regolith structures and similar ...
Oom_Ben's user avatar
  • 363
4 votes
1 answer
240 views

How bright would Earthlight be from the surface of the Moon? Can you read under the light of the Earth?

In the lunar sky, the Earth would certainly outshine the Moon from its place in the sky of Earth. However, I can find very little about what it would actually be like. I am wondering about the size of ...
GoingFTL's user avatar
  • 201
3 votes
2 answers
3k views

Google maps for Space exploration

Google Maps Can Google Maps for Space Exploration be defined similar to our planet Earth? I.e Planet Mars exploration, Moon exploration, International Space Station (ISS) journey and other planets of ...
Prashant Akerkar's user avatar
7 votes
1 answer
973 views

What happened to ArgoMoon?

The primary objective of the Italian ArgoMoon cubesat was to image the Interim Cryogenic Propulsion Stage (ICPS) after being jettisoned from it. Argotec engineers noticed the inability of the Interim ...
Andykins 's user avatar
8 votes
2 answers
2k views

Lunar nuclear power system - how can hydrogen generated on the Moon be liquefied?

In September 2020, NASA asked for proposals for a lunar nuclear power system. The 10-kW water electrolysis system can create 5-10 tons of hydrogen in a week from the Moon’s surface ice. How would you ...
TheMatrix Equation-balance's user avatar
1 vote
3 answers
335 views

Could we by ordinary mining activities, affect the Lunar orbit?

In The Time Machine (Guy Pearce version), they manage to literally break up the Earth's moon with obviously disastrous results and I believe they were just building underground structures. I am ...
releseabe's user avatar
  • 337
3 votes
1 answer
82 views

HAKUTO-R Mission length after landing?

I was unable to find sources about what will happen to the current HAKUTO-R lunar lander after it lands in ± 4.5 months. There are two possibilities coming to mind: The lander won't survive the lunar ...
RAD6000's user avatar
  • 1,168
2 votes
1 answer
141 views

How much mass will Artemis landers deliver to the moon?

Is there an estimate of the mass Artemis Landers must be able to deliver to the Lunar surface? I am interested in the total mass - vehicle and payload on arrival - as well as a breakdown of how much ...
Ken Fabian's user avatar
  • 1,042
-5 votes
1 answer
131 views

Are there any asteroids between the Earth and the Moon which could also serve as a base

I read about this tennis court sized asteroid https://www.theguardian.com/science/2021/nov/11/near-earth-asteroid-is-a-fragment-from-the-moon-say-scientists It appears to be between the Moon & ...
safe_malloc's user avatar
5 votes
2 answers
200 views

Why is there a 38.6 km Earth-Moon distance difference between Ephemeris types "Observer table" and "Vector table" on Horizons Web Application?

The image above is a screenshot from Horizons Web Application with the Ephemeris type: Observer Table. It shows the distance (delta) from the geocentric observer location to target Moon on April 15, ...
Cornelis's user avatar
  • 7,503
13 votes
2 answers
2k views

Why is the Orion capsule using 2 burns to transfer from the moon back to earth instead of one?

I was reading an article about how the Orion capsule just did the first of two burns that it will use to transfer out of its lunar orbit and back to Earth. I understand the phenomenon of a gravity ...
Rykara's user avatar
  • 233
6 votes
2 answers
408 views

Orion Navigation Camera Image Quality

On November 21, 2022, the Orion Navigation Camera made several images of the lunar surface. Flight Day 6: Orion's Optical Navigation Camera Captures Lunar Surface The image quality is much lower ...
Dennis Williamson's user avatar
11 votes
1 answer
3k views

Why not crash the ICPS into the Moon?

The Wikipedia article on Artemis 1 says that an ICPS disposal burn was performed after spacecraft separation. This was intended to send the ICPS into heliocentric orbit after passing the Moon. Why ...
WarpPrime's user avatar
  • 3,105
0 votes
2 answers
677 views

The costs of a single SLS solid fuel rocket booster

Why didn’t Nasa cluster four solid fuel shuttle boosters around an Atlas V booster. The thrust would be substantially more than that of the SLS, with no fueling problem on the launch pad. It would be ...
James Tosky's user avatar
0 votes
0 answers
79 views

Why does the the Artemis I translunar flight (have to) last 6 days while the Apollo fights to the Moon lasted only about 3 days? [duplicate]

Does the Artemis I flight to the Moon have to last so long compared to the about 3 days long lasting Apollo flights because the Orion spacecraft has to enter into a distant retrograde orbit (DRO) ? Or ...
Cornelis's user avatar
  • 7,503
1 vote
1 answer
536 views

What is the point of the Artemis program when we had Apollo? [closed]

Considering that NASA evidently already know how to land astronauts on the Moon (thanks to Apollo), what is the point of the Artemis program? For example, the just-launched Artemis 1 is 1) uncrewed ...
Allure's user avatar
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