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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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Why is the earth so small when observed from the moon?

I recently discovered the pictures from DSCOVR taken at the Lunar Transit in 2016. The earth appears very massive behind the moon, which is a little unintuitive if you consider how small it is when ...
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0answers
48 views

Was this the first-ever photo of a full moon very close to lunar new year?

Limiting the concept of "lunar new year" to "Chinese New Year" (since there are many lunar and lunisolar calendars, the latter of which the traditional Chinese one is a widely used example), is this ...
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35 views

Moon dust behavior [on hold]

Why do the experts say one thing about the behavior and presence of dust on the moon pertaining to the down firing rocket of the lunar lander, and the absence of debris clouds, or ground disturbance......
3
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3answers
494 views

Apollo Missions - Travel time to moon [duplicate]

I must be missing something - escape velocity is about 25,000mph. The distance to the moon about 240,000 miles. That computes to about a 9 hour flight. Why did it take 3 days for Apollo missions to ...
2
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1answer
92 views

Is any feature of the Moon protected?

Perhaps this seems trivial, since it may not directly affect our planet, but if we ever colonize the Moon and mine its resources, the trace of human devastation will change sooner or later the surface ...
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0answers
55 views

Robotically build resources on a planet before human arrival [on hold]

What would it take to send a group of machines to a planet/natural satellite to build structures for humans which we can go and reside on ? The group would consist a 'worker' that digs up minerals ...
2
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0answers
69 views

What are NASA's dozen payloads for the Moon that will be ready for launch by the end this year? (2019)

Ars Technicha's NASA emphasizing “speed” in its return to the Moon says: The leader of NASA's scientific programs, Thomas Zurbuchen, said this program was designed with speed in mind, and it would ...
3
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1answer
196 views

What did JPL's 1939 lunar lander look like and what practical aspects of landing on the Moon did this engineering design address?

According to Wikipedia's Jet Propulsion Laboratory: During JPL's Army years, the laboratory developed two deployed weapon systems, the MGM-5 Corporal and MGM-29 Sergeant intermediate range ...
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2answers
154 views

How soon after “The Eagle” landed did they first attempt to bounce a laser off the Moon? When did it first succeed?

The question When did Houston figure out where the Eagle had landed? says (in part): During Apollo 11's stay on the surface, Michael Collins was given seven different locations to look for the ...
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0answers
103 views

Is it possible to see a spacecraft orbiting the moon with a pair of binoculars? [migrated]

On this clear early morning over London, I was studying the moon with a pair of binoculars and noticed a tiny dot of light that appeared to trace a slow orbit around the moon. I reckon it moved ...
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3answers
3k views

Could Hubble observe the night side of the Moon?

IIUC the Hubble space telescope cannot observe the Sun lit side of the Moon. And Hubble is never pointed closer than 90 degrees towards the Sun. But this still allows for observing the night side of ...
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1answer
226 views

Asteroid impact on the Moon: which effects cause the flash?

It is most likely that there was an impact on the Moon during yesterday's lunar eclipse. I am trying to get some more understanding of this so that I could maybe do a more detailed video on this ...
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3answers
1k views

How did Lunokhod 1 become “lost” in 1971; in what ways did astronomers “look for it” after that?

The Smithsonian Magazine article Lost Soviet Reflector Found on the Moon says: There are actually five retroreflectors on the Moon: three placed by Apollo astronauts and two that sit atop Soviet ...
3
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1answer
58 views

Luna artificial satellite eclipses

Have we been able to see the shadow on the Moon's surface of any artificial satellites that orbit the Moon?
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2answers
117 views

Why didn’t the astronauts on the moon ever get out of breath? Even while running, or falling down?

My question is, even with the demand of learning how to walk and all the falls and and bumbling around of the astronauts, they never ran outta breath? Maybe in the newer missions they caught this and ...
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1answer
83 views

Launch window for the Apollo Lunar Module?

If something would have gone wrong after a successful Moon landing requiring to ascent as soon as possible, what about the launch window for the lunar rendezvous maneuver? Could they ascent at any ...
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0answers
67 views

Would there be value in taking tardigrades on a Lunar mission?

China's Chang'e 4 mission recently initiated biological experiments on our moon. There's value in performing those experiments, of course. Now, I'd be curious to see how tardigrades do in the long ...
4
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1answer
123 views

Chang'e- 4 safeguards to biological Contamination on the moon?

What kinds of safeguards does Chang'e 4, China's lander on the dark side of the moon use, in order to prevent biological contamination on the moon? How well are they documented?
2
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1answer
65 views

Were there fruit fly or silkworm eggs in the biosphere of the Chang'e 4 lander?

Drosophila melanogaster or bombyx mori? 29 700 google hits for chang'e silkworm 27 500 chang'e drosophila 25 100 chang'e "fruit fly" https://de.wikipedia.org/...
5
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1answer
190 views

Where is that lunar-grown cotton seed sprout?

Most of us have seen this picture of the cotton seed currently sprouting inside a Chinese lander on the far side of the moon: Source The image shows see a plastic grid with a gelatinous overlay of ...
15
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1answer
4k views

How did humans grow plants on the Moon despite the harsh conditions?

The Chang'e 4 lander contains seeds to grow plants on the Moon. The Moon has non-sustainable life conditions. Among those are the lack of water, atmosphere, the varying extreme temperatures, the low ...
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4answers
13k views

Why did the Chinese send flies and plants to the far side of the moon?

The Chinese space craft that just landed on the moon had a tube with a biosphere in with flies and plants. What are they expecting to learn? Didn't we already experiment that on the ISS? Source ...
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2answers
10k views

Could colonizing Moon dangerously affect its gravity?

If we colonized Moon it would mean we are moving matter from Earth to Moon. Since Moon is much smaller than Earth could these changes somehow affect its trajectory/movement to the point we could ...
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2answers
106 views

How to communicate with a lunar polar mission?

We can easily communicate with a spacecraft on the Moon on the near side. The Far Side allows for a L2 halo communication relay satellite easily enough. How would a polar mission communicate with ...
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2answers
68 views

Do moon rovers on near side need a relay communication satellite?

Wikipedia says direct communication is not possible from the far side of the moon. So I'm guessing it should be possible for the satellite to communicate directly without relay satellite from the near ...
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3answers
2k views

Is it ethical for Chang'e-4 to bring an entire ecosystem to the moon? [closed]

As far as I know, it isn't ethical to contaminate outer space with life from Earth, because then we will never be sure if life can actually grow there. However, I just read reports that the latest ...
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2answers
6k views

Why did China land a rover on the moon?

Why did China land the Chang’e-4 rover on the moon? What was it supposed to accomplish or explore?
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1answer
97 views

How often does a geostationary satellite enter into a Lunar shadow?

Is there a chance for the many geostationary satellites to enter into the moon’s shadow? If so, how frequently do such eclipses happen and how long do they typically last? Are such eclipses pre-...
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3answers
185 views

Why are the rovers finding the long Lunar night difficult to overcome?

Compared to Martian nights, Lunar nights are long and cold. This has posed a lot of challenges in the past. What specific challenges does long duration night pose? What are the methods to over come? ...
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1answer
164 views

What was the first piece of wood to reach the far side of the Moon? Or the first spacecraft?

Chang'e-4 is the first lander/rover mission to reach the far side, but probably doesn't have any wood on it. What was the first piece of wood that landed on the far side of the Moon, and what was the ...
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2answers
189 views

Did Apollo's velocity slow down after TLI due to Earth's gravity?

I assume Apollo's velocity slowed down after it left Earth orbit, for how long was it decelerating. Did it start accelerating as it approached the Moon. What was the rate of deceleration due to ...
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1answer
91 views

Lunar module on the moon [duplicate]

I understand that a lunar day is about 13 & half earth days, and so also the lunar night. Since there is no atmosphere on moon, the surface temperature during "lunar day" reaches upto +127 degree ...
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2answers
207 views

Colors of the Moon totally different in the pictures taken by Chang'e-4 in comparison with the Apollo photos. Why?

None of the pictures taken by Chang'e-4 Chinese lunar probe (see the attached images) in January 2019 have colors similar to the photos taken by Armstrong, Aldrin and the other 10 astronauts. The ...
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2answers
186 views

How to soft land on Moon?

China had sent it's own rover Chang'e-4 called Jade Rabbit/Yu Tu 2 to explore the far side of the Moon, the news said it softlanded... I remembered there is no atmosphere to deploy parachute so what ...
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2answers
274 views

Transmission time per day for Chang'e 4?

Congratulations for the sucessfull landing on the back side of the Moon. There is continuous line of site available for radio connection from the lander to the Queqiao relay satellite at the Earth-...
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4answers
1k views

Exit film of moon landing departure

On Apollo 15, 16, and 17 NASA filmed the Lunar Module taking off and leaving the moon. With no-one on the moon how could the the camera move to follow it and who brought the exposed film back to ...
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0answers
21 views

Trajectory information for Ranger, Luna, and other early Lunar explorers

Is there a location where I can get remotely reliable information on the trajectories for the old Ranger, Luna, and other lunar explorers? I'm especially interested in the ones that flew by the Moon ...
2
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1answer
69 views

Chang'e 4, what is planned during December 12 and January 3?

Chang'e 4 is in Moon orbit since December 12, the landing is scheduled for January 3. What is planned during the 22 days in orbit?
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1answer
74 views

Would a debris field on Mars look like one on either the Earth or the Moon?

I am assuming there are no photographs, with enough resolution, of the any of the debris fields of Mars probes that crashed into the surface of Mars to indicate what the debris field looks like. I am ...
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4answers
306 views

Why do some scientists want a moon base for further space travel? What are the advantages of a moon base if compared with an earth base?

The distance between moon and earth is just 384,400 km. So, if we can travel (from moon) to another planet, we also can travel (from earth) to the same planet. But I've read that some scientists want ...
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1answer
97 views

What are the “Boeing Lunar Orbiter spacecraft” from the 1960s? Why is “Boeing” in the name?

An October 2013 article in SpaceRef.com The New Race for the Moon says: Although LRO data remains unrestricted there is other evidence that NASA is worried about such data transfer to China. ...
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1answer
100 views

Did NASA remove four major photographic atlases of the Moon from its Technical Report Server? Gone for good, or just hype?

An October 2013 article in SpaceRef.com The New Race for the Moon says: "NASA's policy is to make data publicly available. I think that is a very noble policy. I do not see anything wrong with it," ...
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0answers
56 views

Long term survival at Tranquility base? [closed]

What are the current estimates for the likelihood for a human to survive one year on a true Moon-base (first) vs a Mars-base (first), and what role are such estimates playing in NASA's decision to ...
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1answer
110 views

Bombing the Moon: how much debris would there be in stable orbit?

If someone had actually nuked the Moon (e.g. here or Bombing Moon and Mars: What would it look like? ), what's the probability of some debris reaching a stable orbit around the Moon? This would not ...
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0answers
34 views

How do I calculate the Characteristic Energy for a rocket to Near Rectilinear Halo Orbit where the Deep Space Gateway is gonna orbit moon?

How do I calculate the Characteristic Energy for a rocket to Near Rectilinear Halo Orbit (NRHO) where the LOP-G or the Deep Space Gateway is going to be orbiting the moon? Or if someone already has a ...
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3answers
2k views

Will it be possible to see BFR approaching the moon from earth, with naked eye?

The title pretty much sums it up. I'm not old enough to have experienced any of the previous manned moon landings. Given that Big Falcon Rocket will go around the moon in 2023, I'm wondering if one ...
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1answer
100 views

Is the telemetry for the Surveyor moon missions still existent?

Is the telemetry for the Surveyor moon missions still existent? Between 1966 and 1968 NASA put on the surface of the Moon five Surveyor landers. Is the telemetry for these mission still available ...
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2answers
160 views

Were panoramic images taken during Apollo 15 planned and trained before on Earth?

I followed a link in an answer to the question about stereoscopic images and found a long list with panoramic images composed from images shot with the lunar Hasselblad cameras. For instance the ...
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2answers
2k views

Are there any videos of onboard the Apollo Lunar Module while landed on the Moon?

These would be very worthy videos since there is air in the Lunar Module and they don't wear the heavy spacesuits, so one could see how they behave on the Moon in a breathable atmosphere and without ...
14
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2answers
3k views

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 ...