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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34
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1answer
5k views

What if Apollo Lunar Rover failed on the Moon?

Let's assume that our Apollo astronauts are on the Moon, driving their Lunar Rover and they are far away from the LM. What if LRV failed during the mission? Would they be able to get back to the LM on ...
3
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1answer
69 views

Lunar satellite navigation system

Inspired by some questions: Are People Actually Serious About Mining The Moon? How to estimate that receiving GNSS signals Earth while orbiting the Moon will still provide locations to about 200 ...
26
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2answers
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What did JFK mean by “and the others” in his “We choose to go to the moon” speech?

In John F. Kennedy's Moon Speech on September 12, 1962 at Rice University, what does "and the others, too" refer to in the following excerpt? We choose to go to the moon. We choose to go to ...
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5answers
320 views

Are People Actually Serious About Mining The Moon?

I see a lot of enthusiasm about the possibility of mining the Moon. But worryingly, I don't see much said about the potential horrific effects of this. I mean, guys: the Moon is actually pretty damn ...
4
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1answer
159 views

Would it be legal for a company to build a base on Luna?

Are there any laws governing the legality of construction on Luna? If there are, who's responsible for enforcing them? At least vaguely related: moon structure ownership
0
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1answer
187 views

Why they left a mirror and not a camera on the moon? [closed]

The title says it all. Why did the astronauts leave a mirror but not a camera on the Moon? Also, is there a reason why the Hubble telescope was built to orbit the Earth and not built to be on the Moon?...
10
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1answer
534 views

Can I see Tranquility Base and other lunar landing sites on Google Map's moon charts?

I'm trying to find the location of the Apollo program landings on Google Map's Luna charts, but while I can find roughly the location of the Apollo 11 landing site, I don't appear to be able to see ...
3
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1answer
125 views

When the lunar module ascent stage launched to take astronauts back to the command module, how long was the launch window? [duplicate]

This excellent animation says the launch must happen at "just the right time", but how long was the actual launch window, how precisely (how many seconds or minutes) did the launch need to ...
2
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1answer
79 views

Navigating to moon from orbit [closed]

In short: My goal is to get knowledge about general travel in space and navigating to a certain object - with literally "low cost" tech. My primary interest is how to control and move a ...
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0answers
32 views

What are the advantages of building a rocket base on the moon (if there are any)? [duplicate]

Gravity is 1/6 on the moon (as compared to Earth). So to launch a rocket there will take considerably less fuel. On top of that, the moon circles around the Earth so you could give the rocket all ...
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1answer
49 views

Lunar Reconnaissance Orbiter (LRO) stereographic projection transformation equations issues

I have been trying to figure out the coordinate frames the Lunar Orbiter Laser Altimeter (LOLA) team uses for data. In their dsmap_polar.cat file they state: $$ \begin{align} X&=R \sin{\lambda}\,,...
5
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0answers
63 views

Other than astronauts, did any equipment go to the moon more than once? [duplicate]

It's been well documented elsewhere that three astronauts made multiple trips to the moon (whether to just orbit it, or actually land), these being Lovell, Young, and Cernan. Other than these 3 ...
8
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1answer
583 views

Are quasicrystals common on the Moon and Mars?

According to this 594, 7861 Nature article called First nuclear detonation created ‘impossible’ quasicrystals, the quasicrystals are readily created when where is an explosion or a meteorite impact ...
5
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4answers
154 views

Would knocking the moon off it’s tidal lock with Earth affect its orbit?

Lots of discussion about terraforming the moon involves smacking it with a comet such that it rotates with a 24 hour ish period. But I don’t know if this will affect its orbit in any way. Is it ...
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0answers
30 views

Articulable/tilt-able solar panels planned for, or already tried on Mars or the Moon to get rid of deadly dust accumulation on solar panels?

From Forbes.com's Mars Opportunity And Spirit Rovers Could Have Lived Practically Forever With One Tiny Change: One option would be to install some mechanism such as wiper blades to remove any ...
2
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0answers
19 views

Alternative small mass payload transportation from the moon to L5 besides rail gun and mass driver?

This question asks about a low cost transportation from the lunar surface to a space settlement at L5. Moon mining is can be a revolutionary breakthrough in sustaining a space economy, but large scale ...
0
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1answer
99 views

What qualifications and requirements do you need to go to the moon?

I've dreamed of shooting for the moon, but I'm not sure how, if any former NASA Recruitments or scientists see this, please tell me what I need to do. Question: What were the qualifications to be ...
5
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1answer
334 views

Where to get data of the received/measured moon temperature of the last 50 years?

Are there any accessible public data or charts of the measured and received moon temperatures over the years? What is the long term reliability of the instruments installed by the landings? If the (...
2
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1answer
77 views

Could a single CubeSat provide location services on another celestial body such as Mars? Could a constellation do it?

From my understanding, by having two satellites emit a signal simultaneously (carrying atomic clocks to achieve it), a ground device could measure the difference in times of arrival to determine its ...
3
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1answer
115 views

What rocket would Blue Origin go to Moon with?

Blue Origin has shown interest in going to the moon, and they're working on a lunar lander to do it. But it's not clear to me how they'll get the lander there. Will they use one of their rockets? If ...
3
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2answers
310 views

If used on an object on the moon, how cold would an ultrawhite painted object get?

Recently in the media https://www.google.com/amp/s/www.bbc.co.uk/news/science-environment-56749105.amp very white paint has been reported on that can reduce an object's temperature below ambient. If ...
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8answers
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Would a duct tape spacesuit be practical?

Spoilers ahead for season 2 of For All Mankind. Essentially duct tape wrapped around the body, over clothing which looks like standard NASA jumpsuits for pressurized environments onboard spacecraft. ...
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0answers
54 views

How much mass do we need to send to the Moon to set up a useful factory there? [closed]

In light of SpaceX's recently winning the contract to go to the moon for NASA, I started thinking (again) about what avenues sending a rocket that size might open in our near-future. So let's assume ...
12
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2answers
1k views

Why does Starship need to transfer crew to/from Orion to land humans on the moon?

In the new NASA Artemis program, Starship needs to transfer the crew to/from Orion. Why is this even needed? I thought that the Starship design allows it to travel directly from Earth to the Moon ...
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0answers
63 views

What's the lowest periapsis of a successful orbit around the Moon? [duplicate]

What's the lowest periapsis of a successful orbit around the Moon ever made by a moon-orbiting spacecraft? Theoretically, Moon-orbiters can go as low as a foot above the surface due to the lack of an ...
4
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0answers
112 views

Is the telemetry from the Apollo Lunar rovers available?

Are there publicly-available datasets of the telemetry from the Apollo lunar rovers? Was rover telemetry even recorded during those missions? If such datasets exist, I would love to retrieve the (...
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29 views

If we could manipulate the orbits of bodies, how big of an object would be needed to impact Venus to create a moon?

https://en.m.wikipedia.org/wiki/Giant-impact_hypothesis The Giant Impact hypothesis for our own Moon explains not only our Moon but how our molten mantle got "stirred" enough to create our ...
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4answers
2k views

Has trebuchet-based materials transport on the Moon been researched before?

I am participating in a design competition based on lunar In-Situ Resource Utilization (ISRU). A key component of this design is transporting regolith-mined water from a water extractor in a ...
4
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1answer
138 views

How does Lunar Gateway compare to ISS and MIR

Looked around for comparison pictures, but can't find anyone (yet), probably because lunar gateway design is not yet stable. Or is it? I found several different designs. Do they exist "blueprint&...
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0answers
36 views

Did Chang'e-3 and/or Yutu report getting hit by the Earth's magnetotail?

@DavidHammen's answer to If a solar flare happened during a total lunar eclipse, would the Earth block the flare from hitting the moon? And for how long? describes the regular lashing of the Moon by ...
4
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1answer
184 views

How do they measure the voltage of the Moon?

@DavidHammen's answer to If a solar flare happened during a total lunar eclipse, would the Earth block the flare from hitting the moon? And for how long? describes the regular lashing of the Moon by ...
7
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1answer
672 views

Sending Mars rover to the Moon

What would happen if a Mars rover (let it be Sojourner, Spirit, Opportunity, Curiosity or Perseverance) would be sent to the Moon instead of the Mars? Let's not deal with the landing and let's ...
4
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1answer
160 views

Lunar sample return cost per kg - Apollo vs Luna vs Chang'e

Lunar samples (rocks, soil etc.) were returned by US Apollo program, Russian Luna and Chinese Chang'e. How does the cost per kg of the samples compare among these missions? Who got it the cheapest per ...
8
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1answer
285 views

What does the Moon's gravity feel like? If you don't move, could you still tell you're on the Moon?

I am interested in descriptions and discussion from the Apollo astronauts. Almost all animals and many plants are sensitive to the earth's gravitational field. This is important for large mammals and ...
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1answer
69 views

How much of the total angular momentum of the Earth-Moon system is due to the Moon?

I've read that the total angular momentum of the Earth-Moon system is 3.41x10^41 g.cm^2/s (1). How much of that is due to the Moon? In other words, if the Moon ceased to exist and the Earth ...
1
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1answer
133 views

When they shoot lasers at the Moon for ranging, what is the shape of the beam?

Laser ranging of the Moon is usually done with a Q-switched pulsed laser fed into a big (1 or 2 meter diameter) telescope as a collimator in order to get a tight beam all the way to the Moon in hopes ...
13
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1answer
3k views

What is this unlikely-looking contraption (“plutonium battery and scientific equipment”) they're making Jim Lovell cary around a parking lot?

The BBC's Did nuclear spy devices in the Himalayas trigger India floods contains the following image and caption. Questions: What scientific equipment and which plutonium battery is this? Since this ...
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0answers
90 views

Has a satellite or spacraft orbiting the Moon or Mars been spotted from the surface of that body?

In reading this question (Lowest possible lunar orbit and has any spacecraft achieved it?), it prompts the question if any orbiting satellite/spacecraft around the Moon or Mars (the only heavenly ...
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3answers
1k views

Could the Soviets have gotten to the moon using multiple Soyuz rockets?

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 couldn't they launch 20 Soyuz rockets, assemble the ...
10
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1answer
523 views

How radioactive is surface regolith on the Moon?

Use of regolith for shielding from cosmic radiation seems the most practical solution for perspective lunar surface bases. But lunar regolith should gather some secondary radiation while being ...
10
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3answers
2k views

Lowest possible lunar orbit and has any spacecraft achieved it?

Because the Moon has no atmosphere a spacecraft can theoretically cruise at a very low orbit. What is the lowest possible lunar orbit and which spacecraft achieved it? Was it the Lunar Module of ...
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2answers
217 views

Can we engrave on the Moon by focusing laser from the Earth?

I would like to know if it is possible to make an engraving or burning moon's surface by focusing high energy laser beam from earth?
4
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1answer
154 views

Is it cheaper to build a habitat on the surface of the moon or dig a hole into the moon and build a habitat in there?

There was a space competition a while ago that had teams design the best habitat for either Mars or the Moon, and the winning design was a cone-like building using a large 3D printer. I saw it and ...
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1answer
238 views

How much will it cost MrBeast to send a HDD alongside the new moon rover?

I saw this mrbeast stream where you could send a pic to the moon and he promises that he has made arrangements with nasa that they (nasa) will pack it up with a new rover to the moon to be launched ...
3
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3answers
330 views

Bucket loop between Earth and Moon?

Please don't bite my head off. If this is so stupid that it deserves to be squashed, I'm quite happy to delete the question. I mainly would like to know whether anyone's ever suggested this (I ...
4
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1answer
128 views

When our Moon is hiding Mars, is it possible to create a radio communication between Earth and Mars?

According to this link Mars is hiding behind the Moon ... It’s a twice-a-year occultation; like the eclipse When such situations happen, can we communicate with the Mars rovers, and in the future - ...
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0answers
63 views

Would detonating a powerful nuke on the Moon really cause a Richter 7 moonquake? Do we know enough about the moon to predict this?

A recent episode of Kurzgesagt explores the consequences of exploding a hydrogen bomb on/near the surface of the moon. At 3:48 they consider the resulting moonquake, saying it's comparable to a ...
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0answers
83 views

How likely is it for Chang'e 5 to wake up after lunar night?

I have been wondering how likely it would be for the Chang'e 5 Probe to wake up. I mean the surveyors did this a few times, but were all relatively simpler in design. Also what gets damaged in the ...
6
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2answers
1k views

What is the altitude of a surface-synchronous orbit around the Moon?

A geostationary equatorial orbit (GEO) is a circular geosynchronous orbit in the plane of the Earth's equator with a radius of approximately 42,164 km (26,199 mi) (measured from the center of the ...
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0answers
54 views

Longest duration of a Moon orbiter?

From all the spacecraft that orbit or orbited the Moon, which one lasted the longest in lunar orbit? By defunct spacecraft includes.

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