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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11
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2answers
2k views

Could the crash sites of the Apollo 11 and 16 LMs be seen by the LRO?

This BBC article mentions that the crash sites of the Apollo 11 and Apollo 16 Lunar Modules are unknown. The Lunar Reconnaissance Orbiter has mapped most of the moon’s surface at 100m resolution and ...
11
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2answers
282 views

Have there been any recent lunar rovers?

It seems that most rover-related attention recently has been on Mars, with Curiosity recently getting there. However, it seems there are also benefits to exploring places a little closer to home, ...
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2answers
7k views

Was planting UN flag on Moon ever discussed?

In the planning of the US missions to the moon was planting the UN flag ever discussed? It just seems to me that would have been a great public relations move.
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0answers
101 views

What is Buzz Aldrin's T.O.R. plan? How does it work?

Buzz Aldrin is recently quoted in Ars Technical's Buzz Aldrin is looking forward, not back—and he has a plan to bring NASA along: “This T.O.R. plan may be the most important thing I’ve ever done in ...
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2answers
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What was the mascon “fix” used by Apollo 12?

According to the mascon entry on wikipedia: At that time, one of NASA's highest priority "tiger team" projects was to explain why the Lunar Orbiter spacecraft being used to test the accuracy of ...
19
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3answers
8k views

What prompted Lovell on Apollo 8 to announce “there is a Santa Claus”?

On Apollo 8, following the first trans-Earth injection, when the crew came back into contact with Houston, Lovell said: "Please be informed there is a Santa Claus." (Transcript) Given that Apollo 8 ...
1
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1answer
929 views

How much energy would it require to get the ISS to the moon? [duplicate]

How much energy would it require to get the ISS around or on the moon? And how much fuel would that require? And how many cargo missions would that require? And if that is not worth it, would it be ...
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0answers
50 views

Why exactly would “permanently shadowed polar lunar craters… have substantially higher levels of ³He than sunlit lunar surfaces?”

Researching this answer led to ³He in permanently shadowed lunar polar surfaces published in Icarus. The abstract is tantalizing but terse: Abstract Because of their cryogenic temperatures, ...
2
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1answer
111 views

How exactly does this Apollo astronaut's tool work? What was it called?

The BBC News article Apollo in 50 numbers: Weights and Measures shows the following photo with the caption: The astronauts brought back more than 360kg (790lb) of Moon rocks for study on Earth (...
3
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1answer
66 views

How long does it take to refresh helium-3 on the moon?

I was reading a science-fiction novel, Limit, by Frank Shätzing. It depicts a near-future with useful helium-3 fusion, and the Americans and Chinese are bumping elbows mining helium-3 on the moon, ...
3
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2answers
181 views

Will NASA put astronauts into a polar lunar orbit? If so, how?

The NASA news item New Space Policy Directive Calls for Human Expansion Across Solar System says: New Space Policy Directive Calls for Human Expansion Across Solar System and the administration is ...
14
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3answers
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Were stereoscopic pictures taken during the Apollo missions?

Were stereoscopic pictures taken during the Apollo missions? Did the astronauts of the Apollo 11, 12, 14-17 take stereoscopic pictures of the lunar landscape? I know many stereoscopic images were ...
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1answer
88 views

Can anyone find a more recent NASA paid for study on lunar tunnel-boring machine?

The one that I found is from May 5,1988 by Professor Stan Lowy Department of Aerospace Engineering Texas A M University https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19890008382.pdf https:/...
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4answers
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Is current state-of-the-art additive manufacturing (aka 3D printing) good enough to build parts out of Moon/Mars dust?

Additive manufacturing is currently being proposed as a way to greatly decrease the cost of establishing a permanent (robotic or human) presence on the Moon or Mars by sending only 3D printers to ...
1
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1answer
86 views

Space Shuttle Moon Mission? [duplicate]

Theoretically speaking, could the shuttle have performed TLI, LOI, and TEI burns given extra OMS fuel? approximately how much fuel and payload bay space/mass would this take up and might there ...
11
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3answers
3k views

Is lunar regolith available for purchase?

Is moon dust (lunar regolith) available for purchase legally? NASA has about 382 kg moon regolith fro Apollo's missions. Is it possible to by a couple grams of it in NASA?
5
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1answer
123 views

Moon's South Pole-Aitken basin mass anomaly, how to reconcile “isostatic equilibrium” with “heavy metal not sinking”?

The recent Phys.org piece Mass anomaly detected under the moon's largest crater is a review of a recently published and paywalled Geophysical Research Letter Deep Structure of the Lunar South Pole‐...
3
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1answer
198 views

How do flags behave on the Moon?

I have seen many theories and question/answers on this site touching upon this subject but no focused question. So I would like to ask this as a two part question. Is what we saw in the Lunar ...
7
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3answers
189 views

What tensile strength would be needed for a lunar space elevator?

A space elevator from the Moon's equator, slightly past the L1 Lagrange point and extending into cis-lunar space would have a substantially lower tensile strength requirement than an Earth-based ...
5
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1answer
105 views

How was the Lunar South Pole-Aitken Basin mass anomaly discovered?

A large mass has been discovered beneath the largest crater in our solar system -- the Moon's South Pole-Aitken basin -- and may contain metal from the asteroid that crashed into the Moon and formed ...
2
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1answer
688 views

Moon Exploration Before the Apollo Missions? [closed]

I'm watching the British movie The First Men in the Moon and it got me wondering if it was scientifically possible to have sent humans to land and explore the moon (or even just orbit) before the NASA ...
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0answers
34 views

Tidal locking of celestial bodies [closed]

Generally moon always faces the same side towards the Earth. People say it is tidally locked. How is any body in space tidally locked and is this forever?
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1answer
80 views

Why does LRO's laser altimeter telescopes use lenses instead of mirrors?

From Space.com's NASA's Piggyback Experiment on Israeli Moon Lander Could Aid Future Lunar Touchdowns shows an image of the laser altimeter on the LRO. It looks like the "transmit" and "receive" ...
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1answer
87 views

Could Beresheet's retroreflector array (still) be used?

Almost the same question as Could Schiaparelli's retroreflector array (still) be used? except for Beresheet. Some important differences in this case: Beresheet was far less "crashed" than ...
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0answers
28 views

Convert ICRF to Body-fixed coordinate for Earth or Lunar. (MATLAB)

I want to find the position (x, y, z) of the satellite around the Lunar. I use the gradient of the gravitational potential to get an equation of motion of x, y, and z-direction in inertial coordinate. ...
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3answers
3k views

Is it possible to have an orbit around the earth and the moon

I was just wondering if it were possible to A) Orbit the moon and earth B) To orbit any two celestial bodies really?
3
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1answer
153 views

How radioactive might the Moon's surface water be? Could it be unsafe to drink?

NASA Chief Scientist Jim Greene asks: Can we go (to the Moon) and drink the water? The source of the water in this case would be ice deposits to be found in permanently shaded areas on the Moon. ...
6
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2answers
251 views

Would current computer technology have made the Moon landings any easier?

A few days ago a group of us were discussing the Moon landings (specifically the Apollo programme). Whilst this in itself was incredibly impressive we thought it was particularly impressive given the ...
12
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2answers
943 views

Were the Lunokhod Lunar rovers remote controlled in real time?

How were the Soviet Lunochod rovers during the 1970s controlled from Earth? Did they take images on the fly and a guy with a joystick steared it around to reach targets of opportunity? Well, probably ...
8
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0answers
63 views

What science data has been released from Chang'e 4?

Chang'e 4 was the first soft landing on the far side of the moon. What science data has been released from it? That is, in two parts: what science was done and of that, what data has been released to ...
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2answers
67 views

What is the connection (if any) between the new Artemis mission and the two Artemis spacecraft (Themis-B, -C)?

It has been announced that the culmination of Space Policy Directive 1, the goal to land Americans and specifically the first woman on the Moon, at it's south pole in 2024 will be called "Artemis". ...
3
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3answers
182 views

Why does Blue Origin want to go to the moon?

Jeff Bezos's Blue Origin released their first moon lander, Blue Moon. Have Blue Origin published anything about their reasons for going to the moon?
5
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1answer
301 views

Agena docking and RCS Brakes in First Man

In the movie, First Man, Neil Armstrong and his colleague David Scott, as part of the Gemini 8 program, attempt to dock with the Agena but it turns out to be disastrous as they go into a continuous ...
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1answer
92 views

Long, low mass data transfer wire options

does anyone have any suggestions for wired communications over long distances on the Lunar surface? The maximum length would need to be around 1km. Distributors like Gore and Axon make great ...
25
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3answers
7k views

Was a one way trip to the moon considered by the crew of Apollo 13?

I watched the fantastic movie "Apollo 13" recently and there was one scene that stood out as it looked like the crew was considering making a one way trip and landing on the moon. The script goes ...
0
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0answers
180 views

How would a body be stored in a dark hole in the moon?

How well would the human body stay preserved if it was frozen while pressurized and vacuum sealed before being placed in a crater on the Moon? Would the temperature be more reliably stable on the moon ...
8
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0answers
114 views

At what surface gravity can't astronauts do full steps anymore?

We know that on the Moon in ~1/6 g the Apollo astronauts couldn't make full steps because they jumped with each step. At what surface gravity could you walk more like on Earth and at what gravity ...
7
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1answer
109 views

Carbon sources on the Moon?

In the answer to this question it is pointed out that while lunar soil may provide nutrients for plants, water and carbon dioxide are also needed. Water seems to be available, but how could there be ...
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1answer
132 views

NASA says Mars' soil has the nutrients for growing plants, how about the Moon?

Okey, that's not everything they said but I can't write everything in the title. NASA says Mars's soil has the nutrients for growing plants, though there may not be the right amount depending on where ...
5
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2answers
525 views

How long does one orbit around the Moon take in a typical parking orbit for a stage a lander is going to meet?

I have been pondering the relative advantages of placing a base near the Moon's equator, or at the poles. The poles have been defended as having a superior business case because of deposits of ...
6
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2answers
261 views

Do we know why communications with Beresheet and NASA were lost during the attempted landing of the Moon lander?

I was watching the livestream of the SpaceIL team when they were attempting to land Beresheet on the Moon. As near as I can remember, at around an altitude of 15km above the surface, the SpaceIL ...
3
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2answers
172 views

What is the lowest latency achievable in reliable Earth - Moon communications?

I know that radio waves travel at the speed of light in vacuum so the minimal latency to communicate between Earth and Moon would be about 1.25 second each way. This latency figure will then increase ...
3
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2answers
2k views

Can we see the USA flag on the Moon from Earth? [duplicate]

Is it possible one day to see landing site flags on the Moon from Earth or from space without having to land using a telescope as technology progresses? Highly Related: Were the Apollo lunar ...
2
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1answer
123 views

Is post-X-prize Beresheet better than the X-prize candidate?

As mentioned in this question the total budget of the Lunar X-prize was about US \$30 million, and that included some other prizes beside the winner. However the budget of Beresheet post-X-prize ...
21
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1answer
5k views

ELI5: Why do they say that Israel would have been the fourth country to land a spacecraft on the Moon and why do they call it low cost?

In the news they say that Israel hoped to become the fourth country to land a spacecraft on the Moon. Only government space agencies from the former Soviet Union, the US and China have made ...
2
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0answers
41 views

How large of a mirror would be needed to warm Titan up?

How large of a mirror would be needed to warm Titan up to ~290K? Paul Birch in his paper "Terroforming Mars Quickly" calculated a mirror size of: Support Mirror: 2.5 x 10^7m radius 3x 105m wide ...
5
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1answer
119 views

Going to the Lunar gateway during the upcoming solar maximum! What will the radiation environment be like?

EarthSky.org's What will the sun do next? says: On December 6, 2018, the Center of Excellence in Space Sciences India (CESSI) reported that two of its scientists have made a prediction for the ...
6
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2answers
281 views

Has NASA “gone south”? Why are astronauts needed to explore the Moon's south pole?

Wired: Why America Wants to Send Astronauts to The Moon's South Pole “Before we put boots on the ground at the poles, we urgently need a robotic water ice prospecting mission to the lunar poles,” ...
5
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3answers
174 views

Why do countries or companies still bother sending landers/probes to the moon?

Countries like Israel, South Korea, or China most recently and companies like ispace have plans to send landers to the lunar surface. At least according to this list. Is it because there is little ...
1
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1answer
190 views

Can you really melt lunar regolith with microwaves?

This answer links to the 2008 Phys.org article with the catchy title NASA's dirty secret: Moon dust. The article says: Luckily, lunar dust is also susceptible to magnets. Tiny specks of metallic ...