Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [the-moon]

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

4
votes
0answers
165 views

How will the Lunar Gateway go to L2 and L1?

In a talk to the press which can be heard in the YouTube video NASA Administrator Jim Bridenstine Explains the Lunar Gateway, NASA director Jim Bridenstine says after about ...
41
votes
2answers
11k views

Is pinging the Moon with a laser as shown on “The Big Bang Theory” possible?

In an episode of season 3 of The Big Bang Theory, the cast sends a laser pulse to the Moon. This seems to be a real thing: What Neil & Buzz left on the Moon (2004). My questions are: Could ...
12
votes
3answers
1k views

How do space suits offer heat protection i.e. during the lunar day?

I didn't know that during lunar day temperature is up to +100°C. This would mean US astronauts were rather to protect against heat than cold? How was this solved (normally, space suits protect from ...
3
votes
1answer
399 views

Where exactly do these supposed images of structures on the Moon and other bodies come from? [closed]

I'm sure you have seen these kind of images before, and the gullible people who think they are real, some just look stupid and obviously fake, others look kind of convincing. Even though they ...
2
votes
1answer
158 views

Most attractive resource on the Moon

What is the most attractive resource available to be extracted on the Moon? By the most attractive I mean the most useful considering the location in which it's extracted and including all the ...
3
votes
0answers
49 views

What are the chances that the ISS transits the moon as seen from your house (or headquarters)?

In this answer I tried to do a simple probablistic estimate on the distribution of the ISS's ground track passes over Earth's equator. Recently there is a photo of the ISS passing over SpaceX ...
2
votes
2answers
98 views

Could the Lunar Lagrange Points work for space telescopes?

Every orbit in space has its pros and cons. Low Earth Orbit has accessibility but frequent eclipses whereas a Solar Lagrange Point is clear and stable but distant. In the case of the Lunar Lagrange ...
13
votes
1answer
2k views

How easy is it to take off from the Moon?

I do wonder how easy it was for the astronauts to take off from the moon, in their landing craft. I realise that there's no atmosphere there, and that gravity is about one sixth of that of the Earth's ...
4
votes
0answers
122 views

What physiological effects did the Apollo astronauts experience due to the lower lunar gravity?

When humans are exposed to weightlessness they often experience space adaptation syndrome (similar to motion sickness). Also fluid redistribution to the upper body is nearly immediate causing bulging ...
9
votes
1answer
175 views

How does the ISS Transit Finder website get the position of the ISS so accurately?

The recent Petapixel article How to Shoot the ISS Flying Across the Face of the Moon gives a lot of detailed, helpful advice for photographing transits of the ISS across the disk of the Moon. For ...
3
votes
1answer
705 views

What will China's new “space station” in Argentinian Patagonia be used for?

The New York Times (fairly strongly worded) article From a Space Station in Argentina, China Expands Its Reach in Latin America describes a "space station" or base equipped with (among other things) a ...
11
votes
1answer
997 views

How much total lunar mass remains viable for analysis here on Earth?

I know that samples of lunar regolith were taken on many missions to and from the moon, but I also know that these rocks aren't common and are being used for analysis purposes. According to this NASA ...
0
votes
0answers
58 views

Could a revised Space Shuttle be sent to the moon with a lander as cargo? [duplicate]

Why couldn't a modernized and revised Space Shuttle with attached fuel tanks be used to go to the moon with a moon lander in it's cargo bay?
3
votes
1answer
75 views

Would we be able to see a Space craft transit in Lunar orbit?

If a Apollo type Moon mission happened today would we be able to see it transit in Lunar orbit? I know we can't see the Landing sites of the Apollo but could we see the Command Module and its shadow ...
2
votes
1answer
161 views

Expected differences between concrete prepared on the ISS and matched samples prepared on Earth?

The Spaceflight Now article Cygnus arrives at station with CubeSats, quantum physics experiment describes experiments that will be done on the ISS mixing small samples of either cement or concrete (I ...
44
votes
3answers
12k views

Why is an airbag landing on the moon not viable?

In this related question, it was explained that the differences in design between a Mars rover and moon rover were too substantial to substitute one for another. One of the points made was that the ...
10
votes
2answers
2k views

Differences in the design of a commercial Moon rover and a commercial Mars rover?

News in May, 2018: Spaceflight Now NASA cancels lunar rover, shifts focus to commercial moon landers Washington Post Stunning scientists, NASA’s only moon rover just got canceled Space.com NASA Kills ...
6
votes
2answers
791 views

Where can I buy lunar regolith simulant?

I am a high school student living in Canada that needs lunar regolith for a science experiment? Anyone know where to buy simulant of it?
1
vote
0answers
93 views

How would we make concrete on the Moon?

Bringing building materials to the moon would be costly. It would be better to just create materials on the Moon.
1
vote
0answers
44 views

How bright would electrostatically suspended dust above the lunar surface be? Has it ever been measured?

@TomSpilker's answer mentions the potential effect of dust from the lunar regolith being slightly electrostatically levitated by the charge on the lunar surface induced by the solar wind on telescopic ...
1
vote
1answer
96 views

Is there any Scientific Benefit to the Lower Albedo levels on the Darkside of the Moon?

I was reading the answers to this question: What did the sky actually look like from the Moon? And it got me thinking... What, if any, astronomy tasks could be performed better on the lunar far side ...
37
votes
5answers
2k views

How do we know the Apollo Moon landings are real?

Since about 1976, conspiracy theories denying the Moon landing and claiming it was all faked have cropped up. As a website devoted to answering questions about space exploration, we receive questions ...
18
votes
1answer
3k views

What is the purpose of the satellite that China is putting in lunar orbit?

I was just reading an article about the satellite that China is putting in Lunar orbit as phase one for their exploration of the far side of the Moon. Is this satellite just to be used as a signal ...
3
votes
1answer
114 views

Shape and dimensions of the Moon's reference surface for selenographic latitude/longitude?

For Earth, the reference surface for "GPS" latitude, longitude, and altitude is the WGS84 ellipsoid, with equatorial and polar radii $a, b$ of 6378.1370 and 6356.7523 kilometers, respectively. ...
21
votes
2answers
1k views

How exactly did the floor of an Apollo LM look like after EVA(s)? Seeking photo!

Almost five years ago I posted a question entitled "How was dust-mitigation addressed during the Apollo program?". While the question was answered rather comprehensively, it left me even more curious. ...
4
votes
0answers
157 views

Pool on the Moon?

Hypothetical scenario: There is a dome on the moon containing an Olympic-size swimming pool. Our intrepid hero is receiving a scuba diving lesson at the bottom of the pool (3m) when a hull breach ...
4
votes
0answers
152 views

(What happened to the) Plans to visit and/or document sites of previous lunar landings? Are any active now?

There are a lot of (now historic) landing sites on the moon. You can see a great review of them in this answer to the question How many extraterrestrial bodies have hosted a “lander” which returned ...
3
votes
2answers
112 views

Spacecraft Horizon Sensors for Lunar orbit

Recall that "traditional" horizon sensors for Earth missions utilize the IR wavelength regime since this can reveal a good contrast between the cold space and the warm Earth-limb edge. If we were to ...
5
votes
0answers
141 views

Low energy cements for Mars and Callisto. Waterless cement for the Moon. Any good candidates?

In the non-polar regions of the Moon and Mercury there is a shortage of volatiles, including hydrogen and nitrogen, so they might be regaded as too valuable to be "wasted" to prepare concrete. ...
3
votes
1answer
122 views

Could a radio telescope orbit Earth-Moon L2 so that it is in the Moon's radio shadow?

Chang'e 4, a Lunar orbiter and lander on the far side of the Moon, will put a relay satellite in a halo orbit around EML2 that also will do some low frequency radio astronomy. Since the Chang'e 4 ...
3
votes
0answers
171 views

Were the Apollo lunar ALSEP transmitter signals ever analyzed or used after the experiments were shut down?

This answer to the question Why were the “perfectly functioning” seismometers placed by Apollo 12, 14, 15 and 16 astronauts all shut off in 1977? links to a NASA News Release No: 77-47 dated September ...
4
votes
1answer
608 views

Why were the “perfectly functioning” seismometers placed by Apollo 12, 14, 15 and 16 astronauts all shut off in 1977?

The Wikipedia subsection Moonquake says: Information about moonquakes comes from seismometers placed on the Moon by Apollo astronauts from 1969 through 1972. The instruments placed by the Apollo 12,...
5
votes
2answers
267 views

What size payloads could we feasibly launch from the moon with a mass driver?

I've been wondering how large a payload could be launched & if it's viable to launch those payloads directly to the earth for splashdown & collection. Obviously the payload would need to be ...
2
votes
0answers
37 views

Which materials make up a Commercial Satellite?

I'm writing a story based on the premise that an already-existing moon base is used to mine, construct, and launch a bunch of commercial satellites to GTO (the lunar surface is way "closer" to GTO ...
5
votes
1answer
710 views

Stripe of high def imagery on Google Moon

When messing around with Google Earth's Moon and Mars features I noticed that the lunar imagery used is mostly homogeneous except for a large stripe across its' surface. See Image: This "stripe" also ...
7
votes
2answers
191 views

Film emulsion on the moon-were the cameras heated?

Re: moon photos : What prevented the film emulsion in the camera used on the moon from freezing and cracking, or simply becoming insensitive from cold? Is film resistant to such extreme cold? What ...
1
vote
1answer
64 views

How do I determine date in history when the moons sidereal month was 27.416 days long? [closed]

I understand that the moon's orbit is gradually increasing because it's moving away from Earth at a rate of about 3.8 cm per year. I also understand that there isn't enough long term data to assume ...
2
votes
1answer
196 views

What is the case for human presence on the Moon?

The Moon landings in the 1960s happened largely, if not entirely, because of Kennedy's mandate. Although Apollo started before his famous speech, it was an expensive endeavour which could have been ...
1
vote
1answer
192 views

Was there magma on the moon ? Is it still there

Sitting at home I realized spots on the moon. I felt that there are some dents or scars on the moon. It made me suspisious . I searched on net about it and the conclusion I found was that millions of ...
5
votes
1answer
164 views

Earth polar orbit to Lunar polar orbit

Suppose you wanted to achieve a polar orbit around the Moon, starting from LEO. Would it be better to start from a polar orbit around the Earth? "Better" meaning using less fuel, having more frequent ...
25
votes
1answer
2k views

How was the Apollo lunar liftoff video transmitted to Earth?

There is video of the Apollo 15, 16, and 17 lunar modules lifting off from the Moon. I recall watching it live for Apollo 17 at least. I know the images were captured by a camera mounted on the lunar ...
23
votes
2answers
4k views

Could SpaceX land on the moon today?

Now that SpaceX has a bunch of flown Block 4 Falcon 9 rockets laying around, could they theoretically do a mission to the Moon with landing even if it's just a rocket with no payload? Does it work out ...
3
votes
1answer
314 views

Copper abundance in the Moon

I have been searching many times for information regarding copper abundance in the Moon, but until now, I haven't found any that clearly expresses anything about its abundance. Would it be viable to ...
5
votes
1answer
362 views

Did the Apollo astronauts suffer any health effects from inhaling lunar regolith?

Lunar regolith is nasty stuff - essentially tiny obsidian shards, and the Apollo astronauts had nothing like decent decon on the LEM. Did they have health problems that arose from that? Obviously, ...
2
votes
2answers
1k views

Can we expect shots from Starman that include the Earth and Moon together?

Just as the question asks. Will the Roadster get anywhere near, or be in any planned position to capture images of the Earth and Moon in the same field of view? A sort of "family photo" :)
4
votes
0answers
118 views

Why are so many Lunar Reconnaissance Orbiter images blank?

When downloading Lunar Reconnaissance Orbiter LRO NAC images from the website https://pilot.wr.usgs.gov/ a significant portion of them have no useful data -- they have a sort of plaid pattern. Does ...
23
votes
3answers
6k 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 ...
2
votes
1answer
375 views

Is it possible to have a binary “figure-8” orbit around the Moon and the Earth and perhaps always face the sun?

Is it possible to have a 'figure 8' orbit around the Earth and the Moon? I'm looking for a non-decaying orbit that will not require significant rocket fuel to maintain, unlike the orbits used in the ...
7
votes
1answer
455 views

Could you launch rocks from the Moon to hit Earth?

In the Robert A. Heinlein novel, The Moon is a Harsh Mistress, the plot famously revolves around sending rocks from the Moon to Earth, launched via electromagnetic rail gun and the impacts looked like ...
41
votes
10answers
17k views

Which is closer to Mars, Earth or the Moon?

Which is closer to Mars, Earth or the Moon? I'm writing a novel and I'm so grateful for the wealth of information. The only answers I find refer to Phobos and Demos Mars moons.