Questions tagged [nasa]

Questions pertaining to activities of the National Aeronautics and Space Administration, a United States government agency that deals with space exploration and research.

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6
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3answers
980 views

Which orbital maneuver is currently regarded as the most viable for a human mission to mars?

I realize that there are different orbital maneuvers for different goals (e.g. optimizing time, efficiency, cost, etc.). However, which variables are currently considered as the most important to be ...
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2answers
268 views

Why is there no video of the first steps of Apollo 16 and 17?

In doing research in to the first words said on the surface of the various Apollo astronauts, I found there was no video of Apollo 16 and 17, at least until they had been on the surface for a while. ...
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1answer
794 views

Does Star Trek's adherence to naval tradition have roots in NASA or earlier real organizations?

I know this sounds off topic, but bear with me. This is a question about real world space agencies. Is it well established that Star Trek follows naval tradition. For example its ranks come from ...
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1answer
136 views

Was the Orbit Pavilion triggered by real communications events?

The October 2016 NASA JPL news article Art Turns Public Eyes (and Ears) Toward Space describes an artistic interpretation of the communications between a number of NASA Earth satellites and ground ...
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2answers
710 views

Why was MarCO-B CubeSats flying away after InSight landed?

Farewell to Mars November 26, 2018 MarCO-B, one of the experimental Mars Cube One (MarCO) CubeSats, took this image of Mars from about 4,700 miles (6,000 kilometers) away during its flyby of ...
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1answer
148 views

Short EFT-1 missions launch window

I have been following the Orion flight test this morning hoping that the engineers could finally manage to launch the spacecraft on time and I was disappointed when the scrubbing was communicated. ...
2
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1answer
275 views

How would the Apollo telescope have worked in the Apollo command module? Where would it be located and how would it be operated?

In the Vintage Space video episode Missions we Lost When Apollo was Cancelled, there is discussion of the Apollo Telescope and the Block 3 command module after about ...
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2answers
144 views

What can Halosat do that can't be done already?

The GIF included in the BGR article Watch the International Space Station poop out a tiny satellite that will search for (missing) matter which shows a 3U 6U cubesat ejected from the ISS. The article ...
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1answer
191 views

How will the Gateway-before-boots sequence benefit US business, economic and technological development?

Update: Several people were kind enough to make helpful suggestions about this question. I'm looking strictly for well-reasoned, fact-based answer only. Thanks! In the question More complete source ...
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1answer
86 views

Why would different Shuttle orbits have different mission directors?

The Wikipedia page for NASA Flight director Holly Ridings contains a portrait with two other STS-117 mission flight directors. The caption there says: Flight directors for the STS-117 mission in ...
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3answers
6k views

Could the museum Saturn V's be refitted for one more flight?

Even though we will not build new Saturn Vs, there currently exist three Saturn Vs in museums. Could any of these rockets be refitted for flight? If not, what specific component would prevent the ...
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1answer
3k views

If the space shuttle computers all output contradictory commands, how is it chosen?

The space shuttle computers use triple-redundancy, and if one computer contradicted the other two, it would be ignored. I read that if all three gave contradictory output, one computer would be ...
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1answer
990 views

Is there any reason why American spacesuits color changed over years?

From Mercury silver suits to orange Space Shuttle ones, color of space suits have changed over years. Is there any reason for it?
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2answers
732 views

Is NASA launching fewer interplanetary missions?

We were discussing this in the chat room yesterday, and I thought it might make an interesting question. While missions are lasting longer today than they perhaps ever have, it seems like there are ...
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3answers
2k views

What happens to Insight's parachute on Mars?

All of the animations I see show the heat shield detaching and falling to the ground, then Insight detaching and landing. There is no information about what happens with the upper part of the heat ...
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0answers
232 views

How did “the kid” (John Meisenheimer) calculate that there was a wave in the jet stream and Explorer 1 would be okay to launch?

This tough question links to the NASA YouTube video NASA 60th: How It All Began which shows a lot of really nice, historical file footage and stills. After about ...
12
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1answer
467 views

Was there any “practical” advantage to having different crews for each Apollo landing?

So, out of the 24 men that went to Moon orbit and back during the Apollo program, just three of them did the trip twice, but landings where always done by a different crew. From the politician's ...
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3answers
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The Moon's shadow could not possibly look like this — could it?

The NASA Goddard video Tracing the 2017 Solar Eclipse is a visualization of the calculated shape of the umbra during the upcoming August 2017 total solar eclipse, as it moves across North America. ...
11
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1answer
756 views

Growing food in space

I can't find info on NASA site, but saw a picture of romaine on ISS and am wondering how it maintains its shape in zero-gravity- why doesn't it spread out, what makes it grow up...?
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1answer
454 views

What were the differences between the LLRV and LLTV?

The LLRV (Lunar Landing Research Vehicle) was used to develop the LLTV (Lunar Landing Training Vehicle), but were there design differences between the two? Were any major lessons learned from the LLRV ...
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3answers
631 views

Is there any active collision avoidance aboard the spacecraft in Mars' orbit?

Wikipedia writes to say As of 2009, about 19,000 pieces of debris larger than 5 cm (2.0 in) are tracked,[1] with another 300,000 pieces smaller than 1 cm below 200 km altitude Control collision ...
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4answers
3k views

Why were Solid Rockets chosen for the SLS

The SLS and the STS seem to be the only rockets utilizing SRBs... Why did they choose to go with them over LH/LOX or Kerosene/LOX? Wouldn't it also be easier to upgrade those rockets in the future?
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686 views

Why does NASA still use film cameras?

According to this video, NASA still operates some cameras for tracking rocket launches that use film: According to NASA, they even have some film cameras placed around their launch site loaded ...
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1answer
229 views

What is the exercise regimen under the SPRINT program?

NASA says (emphasis mine) Current exercise countermeasures on the International Space Station (ISS) are insufficient to prevent muscle atrophy, cardiovascular deconditioning and bone loss ...
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2answers
2k views

What was this capsule dropped from a truck?

I've been watching the PBS American Experience documentary, and they showed a brief clip of some accidents at NASA. One involved a capsule being carried on the back of a truck, on some kind of crane. ...
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3answers
909 views

How far in advance are launch dates set?

We are going to visit Florida in early-mid February and were wondering if we could watch a launch. The schedule, however, does not seem to include February yet. For the purposes of planning our trip -...
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Why was Houston selected as the location for the Manned Spacecraft Center?

NASA's Manned Spacecraft Center in located in Houston, Texas. What were the site selection criteria, and what contenders were there other than Houston? The center is named for Lyndon B. Johnson. He ...
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2answers
2k views

Do we still have all the equipment to go back to the moon?

That is, does NASA still have all the training equipment, computers and so forth that would be required for a new moon program, or would all of that have to be rebuilt as well as building new rockets?
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1answer
321 views

What is the Trump-era path to deep space?

Starting with George W. Bush, the presidents of the United States have presented an ambitious plan to the public to attain human travel of deep space. Bush's Vision for Space Exploration, announced in ...
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1answer
130 views

Where and when did the traditional “wave across the ditch” take place?

I’ve heard that before a launch American astronauts had one last chance to see their family by waving across a ditch (which apparently wasn’t really a ditch?). I’m curious, where and exactly when (day ...
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1answer
238 views

Did VentureStar technology lead anywhere?

VentureStar seemed to make a bit of progress before being cancelled in 2001. Did any of the technology developed for this program lead anywhere? For example, its aerospike engines or high-tech fuel ...
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5answers
864 views

Were there significant instances of cooperation during the Space Race?

Earlier I asked about espionage during the Space Race. Were there any significant instances of cooperation during the Space Race? More specifically, I'm asking about cooperation: between the non-...
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2answers
869 views

How do we track the exact location of the spacecraft which is millions or billions of miles away from us?

How do we track the exact location of the spacecraft which is millions or billions of miles away from us? What things do we study for tracking purpose? How exactly do we predict?
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1answer
224 views

NASA's RS-25 Engines

I am developing a FSX-based space flight simulator FSX SpacePort. I've been trying to get the detailed specs on NASA's RS-25 engine, namely, what were the ramp-up times for this engine? As in, how ...
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1answer
575 views

How will the SRBs used by the SLS differ from those used by the Shuttle?

The Space Launch System, which recently secured funding from Congress, uses many features that were developed from the Shuttle program, including the first-stage engines and boosters, and it's overall ...
5
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1answer
175 views

Does America's Birthright Citizenship law apply to the American side of the International Space Station?

In a scenario in which a pregnant Russian woman were to give birth while visiting the International Space Station, and if she were to give birth while on the American side of the ISS, would that baby ...
5
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1answer
222 views

What is this strange, liquid-cooled tube hanging in a wind tunnel?

Near the end of the NASA video Rocket Engine Testing the NASA Way! there is an image that appears to be archival an possibly quite old. It's a long cylinder densely wrapped with what I assume is ...
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1answer
3k views

LOPG/Deep Space Gateway - What is a cislunar orbit?

Formerly the Deep Space Gateway and now the Lunar Orbital Gateway or LOPG station, is planned for Expedition 1 aka the maiden launch of the SLS. After reading several specifications, to avoid the "...
4
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1answer
981 views

Where can I find “Space policy directive 1”?

Today, as per the tabloids, President Donald Trump signed the "Space policy directive 1". Where can I find the original/raw document? (I get the gist from the tabloids, but wanted to read the raw ...
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1answer
120 views

Hows does “Glenn Research Center's sapphire refractive secondary concentrator” work?

Clicking through NASA.spinoff.gov I came to the page for spinnoff 2001 Glenn Research Center and found this: Glenn Research Center's sapphire refractive secondary concentrator will be used with ...
4
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1answer
197 views

Did InSight take a “mean left” turn on its way to Mars? Is it an out-of-plane maneuver?

In the NASA JPL video NASA Launches InSight to Mars (part 1) after about 14:30 (currently) NASA's new Chief Scientist Jim Green (better photo here) explains: ...
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2answers
115 views

When will NASA PubSpace really make publicly available most of NASA funded research papers?

The Science Alert article All Scientific Research Funded by NASA Is Available For Free is worth reading and contains several links and quotes. Here is one excerpt: The database is called PubSpace, ...
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1answer
68 views

What are “uncoupled attitude maneuvers” and why do them?

This answer to the question Apollo-11 delta-v “due to residual pressure in the docking tunnel pushing the spacecraft apart” detected as it happened? Was it corrected? quotes the following passage from ...
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1answer
313 views

What is the meaning of this writing on the InSight lander, and why is some in Braille?

I spotted this image in this answer and a few things caught my eye. Both images are cropped from the much larger image PIA22540. First Braille in Space? On the left and right sides there is what ...
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1answer
116 views

Where is the LC-19 launch console now?

Julia Bergeron's recent tweet from Florida shows an electronics console that looks to be mid-20th century. Above it is written LC-19 but there are other ...
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0answers
114 views

Combined Mechanical Counterpressure and Gas-Pressurized suits

The "Mechanical Counterpressure" (or SAS) space suit is the holy grail when it comes to mobility, flexibility, and being lightweight however it also has it's share of problems. It's very difficult to ...
3
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1answer
105 views

Help identifying this archival NACA/NASA image of a wind tunnel test object

Near the end of the NASA video Rocket Engine Testing the NASA Way! there is an image that appears to be archival an possibly quite old. It's a metal model of a launch vehicle with two very long ...
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1answer
159 views

How would this two-stage Mars Ascent Vehicle work? Where do you sit?

This curious answer shows an image of a liquid-fueled Mars Ascent Vehicle with a sign in front that only says Two Stage Mars Ascent Vehicle Question: Is there some NASA program associated with it ...
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1answer
1k views

What are these giant NASA boxes?

In this answer I saw Figure 35 of the encyclopaedic ISS Interface Mechanisms and their Heritage and from the link I saw Figure 37, and I've included both below (click for larger size). What are these ...
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2answers
300 views

What are the louver-like structures on the sides of the Mariner 4 probe?

The COSMOS Magazine article First mission to Mars: Mariner 4’s special place in history July 14, 1965, forever changed the way we see Mars. Tim Wallace looks back at one of NASA’s greatest triumphs ...