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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4
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1answer
110 views

How does the Commercial Crew Program differ from the way NASA's previous crewed systems were developed and operated?

This overview of the Commercial Crew Program on NASA's site describes the difference between Commercial Crew and previous systems (I have numbered the original bullet points for easier reference): ...
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1answer
86 views

Is SLS capable of launching the core stage into LEO?

After watching the Hazegrayart video If Rockets were Transparent I realized that I didn't really have a clear idea what the Space Launch System (SLS) is capable of doing. Question: Is SLS capable of ...
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Questions pertaining to Demo-2 Launch [closed]

I have some questions which if the community answers would be of great help. I have enlisted them below: What is the white smoke alongside the rocket? In the 2nd image, the Crew Dragon is been ...
3
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0answers
67 views

Would the Saturday May 30th 2020 SpaceX launch visible from Boca Raton? [duplicate]

Will I be able to see the SpaceX Crew Demo-2 launch this Saturday May 30th if I’m at the beach in Boca Raton, Florida and the launch takes place?
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3answers
3k views

How often do other space vehicles visit the international space station?

I was surprised to read NASA's statement that This (27 May 2020) mission marks the first time since the retirement of the space shuttle in 2011 that humans will fly to the space station from U.S. ...
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0answers
222 views

What is the “mistake” that caused Doug Loverro to resign as NASA's Human SpaceflightChief so shortly before DM-2?

Today, on May 19, 2020, Doug Loverro announced his resignation. It's a bizarre time to do so, so shortly before the Commerical Crew Program puts astronauts into space for the first time, but even ...
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2answers
132 views

How far apart are ISS launch windows?

Being on an eccentric orbit, I imagine the launch windows are instantaneous (which they are) and different for each launch site whether it be Baikonur, Cape, Tanegashima, or the ESA launch site. How ...
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1answer
133 views

Why does the ISS occasionally operate with just 3 crew members?

There have many instances where the ISS only has 3 crew members, often for many weeks. This places significant strain on workload and productivity. Why isn't a new crew launched quicker?
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0answers
45 views

Did NASA develop any crewed moon landing programs between Apollo and Constellation?

I just assumed that NASA has always been developing some plan to get humans back on the moon since Apollo was cancelled. But while attempting to verify this, I found that this doesn't seem to be the ...
3
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0answers
89 views

Heart attacks & suicides in NASA Mission Control of the 60s?

On page 280 of Mike Gray's book Angle of Attack: Harrison Storms and the Race to the Moon (1992), Gene Kranz, legendary NASA flight director in Gemini & Apollo missions, is quoted as saying: It ...
3
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0answers
106 views

Why was the risk of loss of STS-1 (Columbia) estimated to be so high?

There's this tweet from Wayne Hale, former NASA Flight Director Several media people have asked me about how risky STS-1 was. There were a lot of uninformed guesses circulating in 1981. Thirty ...
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1answer
161 views

Balancing Perseverance Mars Rover; couldn't they just “move stuff around a little” rather than add 6+ kg of dead weight?

The NASA News item NASA's Perseverance Mars Rover Gets Balanced says: Just as an auto mechanic places small weights on a car tire's rim to bring it into balance, the Perseverance team analyzed the ...
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27 views

Why was ISEE-3 “the most cost-effective spacecraft we ever had” in 2014?

NPR's 2014 news article and audio podcast: Space Thief Or Hero? One Man's Quest To Reawaken An Old Friend quotes Robert Farquhar (NASA, Wikipedia) when discussing the ISEE-3 mission before the ISEE-3 ...
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What key mission events fell on birthdays or anniversaries due to fine tuning by Robert Farquhar?

NPR's 2014 news article and audio podcast: Space Thief Or Hero? One Man's Quest To Reawaken An Old Friend says of Robert Farquhar (NASA, Wikipedia): Farquhar is now 81 years old. He's been called ...
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34 views

What are the “25 bespoke tools (that) had to be developed” to install a new coolant system for the Alpha Magnetic Spectrometer (AMS)?

The 2020 Jan/Feb issue of the CERN Courier has an astronaut on its front cover and on the next page From the Editor begins: It’s not often that CERN Courier has the opportunity to feature an ...
4
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2answers
269 views

How do spherical SRB's compare to long skinny ones? What do their thrust curves look like?

Most SRBs are long and skinny, probably because most are used low in Earth's atmosphere where aerodynamic drag is large. But here are some very short SRBs, one seemingly spherical except for the ...
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0answers
77 views

What is the distance between one of the mars's satellite revolving near the highest volcano olympus mons and the volcano olympus mons? [closed]

Olympus mons is 27km high-more than three times the height of Mount Everest. Mars needs human landing so would we get a benefit if we landed on olympus mons as our first landing? Would the height be ...
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1answer
60 views

Does the Smithsonian get priority over NASA artifacts?

When NASA no longer has a need for an object -- be it a spacesuit, a piece of equipment, or even an entire spacecraft! -- the object usually goes to a museum. It seems that the Smithsonian ...
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1answer
67 views

What “flickering goggles” do JPL scientists rely on to explore the Martian surface in “genuine 3D”?

Gizmodo's NASA Is Using Red and Blue 3D Glasses to Safely Drive the Mars Rover While Working From Home says: To safely navigate the Curiosity rover across the surface of Mars, over 120 million ...
9
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1answer
567 views

What are beta cloth and beta marquisette, materials used in Apollo-era space suits?

The NASA PDF Space Suit which contains CSM21 Spacesuits pp 223-228 in the url name mentions beta cloth and beta marquisette several times. Question: What are they ...
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1answer
84 views

How should I understand these phrases in this paper on orbit transfers?

I am studying this article on orbital mechanics and can't understand the meaning of some terms related to mathematics (perhaps because my native language doesn't have such terms). I created the same ...
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1answer
66 views

Were there contemporary criticisms of NASA's pre-Challenger plans to exclusively use the Shuttle for US launches?

Before the Challenger accident, NASA planned to use the Space Shuttle as the exclusive launch vehicle for the US. While the other major launch vehicle families were never quite discontinued, I know ...
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“Are we there yet?” (45th Space Wing's goal of being able to support 48 launches per year from Cape Canaveral)

This answer to What does “That's how we drive to 48!” mean? begins "drive to 48" refers to the 45th Space Wing's goal of being able to support 48 launches per year from Cape Canaveral. Has the ...
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1answer
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How are satellites, rocket launches and other space programs affecting the earth’s rotation? How will it be affecting living beings?

Want to know the effects of the active satellite, rocket launches and space programs that affect earth rotation? how? And their effects on living beings due to effect in earth rotation?
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2answers
7k views

Is the NASA worm logo back?

I love the NASA "worm" logo, but they retired it in 1992. Now an article on CollectSpace claims that the worm is officially authorized again: "The worm is back!" NASA Administrator Jim Bridenstine ...
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2answers
400 views

apollo 11 moon landing longitude latitude from PDI to Touchdown

I'm reconstructing the entire apollo 11 mission trajectory. I'm now at the moon landing. Does someone know specific documents specifying longitudes and latitude at the different interfaces starting ...
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1answer
36 views

Are there any preliminary results from Mars lander InSight's RISE antennas?

@karthikeyan's excellent answer links to The Rotation and Interior Structure Experiment on the InSight Mission to Mars (Folkner, W.M., Dehant, V., Le Maistre, S. et al. Space Sci Rev (2018) 214: 100. ...
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1answer
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Do astronauts set a pressure on the space craft altimeter before launch or zero it?

I was watching First Man and noticed that just before the launch of Armstrong's Gemini mission the capsule's altimeter read zero. My understanding of the Titan II GLV is that it's 109ft tall so I ...
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How will Mars 2020 rover Perseverance's selfie skills compare to Curiosity's? Will it have any additional selfie-related capabilities?

The design of the Mars 2020 rover Perseverance benefits from years of operational experience with Curiosity. While 2020's instrument suite differs in several ways it looks remarkably similar to ...
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0answers
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X-248 cape catastrophe [closed]

I was responsible for changing the ignition system on the fatal x-248. It was a result of poor igniter design and especially dangerous procedures by Cape personnel. I am looking for some facility of ...
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4answers
7k views

Why is NASA building its own rocket for the moon mission when it could use SpaceX's?

I read in this article that NASA is building its own rocket for the moon mission. Why would they build their outdated and inefficient rocket, when they could instead use a SpaceX rocket and use their ...
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0answers
57 views

How was DSCOVR “fixed” so that sufficiently dynamic attitude determination is gotten from star cameras?

The following from Space News indicate that a laser gyroscope failed and that software changes were developed and uploaded to the spacecraft bringing it back on line again recently: Software fix ...
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1answer
69 views

Lunar landing module and orbiting space craft personnel transfer [duplicate]

How did the crew of Apollo get from the orbiting capsule into the Lunar lander, as the orbiter rocket engine was between the orbiter and Lunar lander?
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How will NASA's software for autonomous navigation in cis-lunar space work?

NASA news item NASA Funds CubeSat Pathfinder Mission to Unique Lunar Orbit says: The pathfinder mission represents a rapid lunar flight demonstration and could launch as early as December 2020. ...
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1answer
76 views

How will NASA's TROPICS cubesats be inserted into their three orbital planes and proper phasings?

Rocket to launch 8 cubesat to LEO at an equidistant distance reminded me that I'd never asked this question. NASA's TROPICS 3U cubesat constellation hasn't been launched yet, so there's still time to ...
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1answer
168 views

Does NASA really report the power of rockets in horsepower?

On a recent episode of The Late Show with Stephen Colbert, Dr. Neil deGrasse Tyson said: And to this day NASA will still report the power of rockets in horsepower, which is completely absurd, ...
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2answers
3k views

Why are checklists the way they are?

Checklists from different programs are quite different, they are also different from typical aviation checklists. The ISS checklists are full of special characters, e.g. √, boxes around numbers, some ...
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1answer
492 views

What's the final word; does the EmDrive drive work or not?

I'd like to know the final verdict on the EmDrive (or EM Drive); does it work or not? Some say yes, others say no, some say the measured effect was not propulsion, but just the energy radiated by the ...
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1answer
3k views

Are there any ISS component failures that could cause irreparable harm to the station?

What component, if any, would cause irreparable harm ("total") the ISS if it were to break or require replacement? If this component exists, when is it going to reach its end-of-life? By "total", I ...
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1answer
71 views
+100

What were the two circa 1965 semi-polar missions launched from Cape Canaveral?

Teslarati's SpaceX sets date for first Florida launch of its kind in more than half a century says That November 1960 launch thus shut down East Coast polar launches to avoid overflying Cuba and ...
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1answer
337 views

Has the National Near Earth Object Preparedness Strategy and Action Plan seen any action?

This answer to Does NASA have an end-of-the-world policy? mentions the National Near Earth Object Preparedness Strategy and Action Plan. Has this plan resulted in any action?
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5answers
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Does NASA have an end-of-the-world policy?

If an asteroid were detected, shooting towards earth with enough speed and certainty that it would all but guarantee a sequel of the end of the dinosaurs. Observatories and space agencies would almost ...
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1answer
103 views

Did the Saturn IB have eight equally spaced fins around its circumference?

This answer to Saturn V Small Rectangles On S-II Stage includes images and links related to the Saturn IB rocket. It shows what I think is an unwrapped representation of part of a circumference which ...
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0answers
38 views

ISS Mass breakdown [duplicate]

I'm looking for some solid numbers that break down the mass of the ISS into functional categories (with the goal of making a neat pie chart). Such categories might include the mass of... Docked ...
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1answer
83 views

How did NASA fund searches for extraterrestrial life before 1993? How were the searches done?

The BBC's Astronomers want public funds for intelligent life search says: Nasa once funded the search for extra-terrestrial intelligence to the tune of $10m a year. But the funding was scrapped in ...
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2answers
2k views

Why so many STS-61's?

Wikipedia's STS-61 says that it is not to be confused with STS-61A, STS-61B or STS-61C. Why were there so many STS missions where the name included the number "61"?
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0answers
112 views

Why will the NASA Mars drone helicopter use off the shelf batteries?

I read from this paper under section G. that the JPL Mars helicopter scout will use standard 18650 cells from Sony. I’m sure that a company like NASA has the capability of acquiring much more advanced ...
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1answer
98 views

What's the method behind this TDRS triplet inclination “madness”?

Previous "method to the maddness" questions: 1, 2. The image below is from Why does TDRS 1's inclination evolve so much differently than that of all the others starting in 1995? and I've used it a ...
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1answer
178 views

What's next for New Horizons?

Five years ago What's after Pluto for New Horizons? was asked, and the answer turned out to be at first 'something in the Kuiper belt if we can find a good candidate' and finally 2014 MU69. But now ...
4
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1answer
137 views

What is this font used in Apollo / early Shuttle NASA documents? (possibly OT)

Seeking the name of a font used in Apollo NASA documentation and some early shuttle documents as well. Examples: from SSME Pocket Data Book From Apollo 12 / SA 507 Flight Manual Recognizing this ...

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