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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Are these latest anticipated images of JWST released to public?

I came across this line from here: These latest anticipated images (around 10-20 predicted) however are said to be so beautiful that Associate Administrator for NASA’s Science Mission Directorate, ...
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2 votes
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How long does NASA take to post process JWST images?

My question came from this comment. How long does NASA take to post process JWST images?
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2 votes
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Does NASA already have James Webb Space Telescope's 1st science photos with them?

From this link, it clearly says: The main image release event will take place on July 12 at 10:30 a.m. EDT (1430 GMT). Does NASA already have James Webb Space Telescope's 1st science photos with ...
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4 votes
1 answer
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Draper Labs' Control Moment Gyroscope Spacesuit

Back in 2013/2014 Draper Laboratory announced that they were designing and testing a "spacesuit jetpack" that employed control moment gyroscopes (CMG) to allow astronauts to preform EVAs ...
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Installation procedure for NASA's Evolutionary Mission Trajectory Generator (EMTG)?

I am doing trajectory optimization, and want to use NASA's Evolutionary Mission Trajectory Generator (EMTG) software to investigate dates for various trajectories. However, this software does not come ...
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Earth to Mars Transfer using GMAT

I saw a couple of people mention here that in order to change the epoch date from the given Mars transfer example on GMAT I would need to change and re-optimize initial conditions. How would I do that?...
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7 votes
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Space Suit for Artemis, why two contracts instead of only one?

NASA has selected two companies to make spacesuits for its Artemis moon program and future International Space Station (ISS) missions. Teams led by Axiom Space and Collins Aerospace (with ILC Dover ...
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NASA GMAT Hardware in the Loop testing

We are currently evaluating various Mission Analysis & Simulation tools, one of which is NASA's GMAT (2020). One of our requirements is for the tool to support HITL testing. However, i am unable ...
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Why "quiet cruise" of a spacecraft would cost NASA 30 mln $ a year?

The 2022 Planetary Decadal Survey (Chapter 22) states that "quiet cruise" phase of an interplanetary spacecraft will cost about 30 million dollars a year for NASA. "Quiet cruise" ...
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Why doesn’t NASA build its rockets using graphene?

Graphene would be a great material to build a rocket out of. Graphene is extremely thin. One single atom thin layer of graphene can withstand 15 000 000 pascal . A square meter of this material only ...
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Why is most of mission control in Houston? [duplicate]

They were already making a mission control at Cape Canaveral, and then decided to move some, but not all, of it to Houston. Why? Wouldn't it make more sense to have the entire mission control in one ...
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What is the purpose of having a planned hold during a countdown for a rocket launch? [duplicate]

NASA had many with the space shuttle, ULA always had a planned hold at T-4 minutes, and yet other launch providers like SpaceX don't. What is the purpose of a planned hold, and why do some launchers ...
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How many lives have space agencies saved? [closed]

Either the agencies themselves, lives saved by a satelitte launched by them, or how many people would have died if not for space services. How many lives have space agencies saved?
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Does NASA's Titan explorer Dragonfly have a microscope? How will it observe potential microbial life?

One of NASA's stated goals with the Dragonfly mission is to "study astrobiology, prebiological chemistry, and the potential habitability of an extraterrestrial environment." I would think it ...
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What formation-keeping software does MMS use?

The Magnetospheric MultiScale (MMS) mission is a NASA mission consisting of four satellites arranged (at apogee) in a tetrahedral formation. According to this 2015 source: On Oct. 15, 2015, a NASA ...
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What formation-keeping maneuvers are required by MMS?

The Magnetospheric MultiScale (MMS) mission is a NASA mission consisting of four satellites arranged (at apogee) in a tetrahedral formation. According to this 2015 source: On Oct. 15, 2015, a NASA ...
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Has any space agency saved Earth from a major calamity any time?

Like diverting meteor path away from Earth, or blasting giant asteroid which was expected to impact Earth, etc. Has any space agency saved Earth from a major calamity at any time?
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Is there any reason that we have not sent a small mammal to Mars? [duplicate]

It seems like much could be learned in this way but it seems like only orbital missions have had non-human life onboard. I could actually see NASA decide not to send a mouse and certainly not a dog/...
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What caused the JWST Instrument Radiator temperature to start cooling faster on day 34?

As shown on the temperature plots, the D-Instrument Radiator temperature was slowly dropping after sunshield deployment. Around day 34, however, the temperature started to decrease faster than before....
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Why is Nasa retiring ISS

Is there no need to do experiments in space or have that thing where people can go into space. If they spend so much time building it why just trash it for essentially nothing?
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Are there any plans on replacing the shuttle-era RS-25D's during the Artemis III/IV missions?

The last two Artemis missions which use the shuttle-era RS-25D engines will fly in 2025 and 2026. Is there ever a possibility that, in the case that Aerojet Rocketdyne delivers their RS-25Es (or at ...
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4 votes
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With the new (Feb 2022) NASA SpaceX Crew Dragon contract extension, how much per flight?

NASA awarded flights 7, 8, and 9 for Crew Dragon in an extension of the existing contract, bringing the total value to \$3,490,872,904 . We know that in 2014 SpaceX was awarded about $2.6 billion to ...
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Why was SERT-1 put in a suborbital trajectory (4000 km apogee) while SERT-2 (1970-009A) was put in a 1000 km circular polar orbit?

Wikipedia's SERT-1 says SERT-1 (Space Electric Rocket Test) was a NASA probe used to test electrostatic ion thruster design and was built by NASA's Lewis Research Center (now NASA Glenn). SERT-1 was ...
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Spice C compiling issues

I have been trying to run Spice in C code for one week but I have not succeeded. I know how to use Spice in Matlab and Python but I need to use it in C this time. So I have followed this tutorial by ...
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1 vote
1 answer
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What if both SRBs failed in a shuttle launch?

I'm certain there are several flight regimes where this could happen, and that the procedures should be different for each one. For instance, this is a very different question before lift off than it ...
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How many total NASA astronauts have died? [closed]

Including in space, launching, reentering, pre-flight, and in training.
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6 votes
1 answer
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How did pages of Ramon's diary survive the Columbia disaster?

In early 2003, the space shuttle Columbia burnt up due to a failed leading edge on the wing from an external tank foam strike. All seven astronauts were killed. Yet, some pages of Ilan Ramon's diary, ...
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2 votes
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Does anybody have a contact for the Docents for the Space Shuttles? [closed]

I would like to pass along the following information to the Docents for Enterprise (Intrepid Sea, Air & Space Museum in New York) and Endeavour (Los Angeles Science Center). Documents describing ...
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What is the inertial heliocentric reference system used by NASA JPL to calculate the ephemerides of Near Earth Objects?

I'm using the website of NASA JPL Horizon system at this link Small-Body Database Query to download a database of orbital elements for NEOs (asteroids and comets). Although I checked the Horizons ...
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Why isn't NASA planning on saving some of the RS-25Ds due to their historical significance?

A while ago, Scott Manley made a video about the Artemis program and how NASA will expend all its Block II RS-25D engines through the SLS's first four launches. Why isn't NASA planning on putting some ...
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4 votes
1 answer
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Is this JWST Halo orbit plot fouled up somehow?

After looking at this plot and many others I've come to the conclusion that this plot does not represent current JWST halo orbit. If the plot is supposed to be of JWST halo... it disagrees with many ...
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A way to overcome fuel limits on JWST and its operational lifetime; "clip-on" propulsion systems in development that might work in the future?

I was wondering: Although it has been widely publicised that the JWST has a lifetime limit. Is it not it possible given current technology regarding drones and the JWST itself as proof of concept to ...
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Anyone know where to get raw telemetry data for JWT / Webb telescope

https://webb.nasa.gov/content/webbLaunch/whereIsWebb.html has a nice graphical representation of the JWT / Webb Telescope as far as distance traveleled, distance to go, current temperature, etc. I'd ...
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0 votes
1 answer
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Where is Webb Space Telescope?

In this NASA application page Where is WEBB? about the recently launched Webb space telescope the information provided tracking the cruising speed of the telescope widely changes (i.e. dropped from 0....
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Why did the James Webb Space Telescope briefly lose altitude during its launch? [duplicate]

As shown in the center panel of this screenshot from NASA's livestream of the James Webb Space Telescope's launch, the telescope briefly lost altitude during its launch trajectory (and this was ...
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3 votes
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Will JWST be handed over from Arianespace/ESA/CNES to NASA at some point the way Cape Canaveral handed over missions to Houston?

Will JWST be handed over from Arianespace/ESA/CNES to NASA at some point the way Cape Canaveral handed over missions to Houston? JWST has its own propulsion and communication system. Presumably the ...
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Does NASA use UTC for all their missions?

During Apollo 11 launch they said "Liftoff, we have a liftoff, 32 minutes past the hour", which is 01:32 p. m. or 13:32. This is UTC time, because Apollo 11 happened at 08:32 EST. The ...
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17 votes
2 answers
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Why is JWST Launching from French Guiana?

Is the launch from the ESA spaceport because of agreement or an orbital insertion advantage from that facility?
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10 votes
1 answer
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What happens if Ariane V actually fails while launching JWST?

Obviously, I don't expect this. But I was thinking about it, and the importance, uniqueness, and irreplaceability of this payload is almost (?) unprecedented, especially for a transnational project. I ...
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5 votes
2 answers
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Are there any currently studied or hypothesized crewed Mars missions that utilize the Space Launch System?

Space Launch System is finally beginning to see the light at the end of the tunnel. If everything goes smoothly (fingers crossed!), we should see the Artemis program kicked into full drive by the end ...
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11 votes
2 answers
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From which NASA publication originates/where can I find a higher resolution version of this SSME flow diagram?

This came up when I was taking a look at Endeavour over in LA. Where can I find a readable version of this full flow diagram (valves, control systems, and everything)?
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When cis-lunar Artemis astronauts and folks on Earth communicate via audio (e.g. EVAs) will they still step on each other's words like during Apollo?

It's been fifty years since we've heard astronauts and ground folks talk over each other ("step on each other" in 1970's CB radio parlance). Sitting on the floor a few feet away from our ...
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4 votes
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Why does JWST have such a big Blind Spot?

The JWST’s field of regard excludes a significant portion of the celestial sphere in the anti-sun direction. See JWST field of regard (FOR) (source of the image below) Also see How much of the sky ...
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What is the relationship (if any) between NASA's Kilopower project and its request for 40 kW reactor designs?

Gizmodo's NASA Wants to Put a Nuclear Reactor on the Moon begins NASA is teaming up with the U.S. Department of Energy’s Idaho National Laboratory to develop a non-solar power source on the Moon by ...
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7 votes
1 answer
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How are the "lucky JPL peanuts" shared post-pandemic?

The extremely cool NASA JPL video Triumph at Saturn (Part I) is really worth a watch and/or listen. (Don't forget Part II as well!) A bit after 36:59 it discusses ...
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9 votes
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Can an ISS module survive reentry?

Nasa is making plans to de-orbit the ISS safely over the pacific ocean, this eventually leads to the question of whether or not an ISS module can survive reentry (survive meaning it is recognizable ...
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4 votes
1 answer
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Who is currently an authority on (at least coordinating) space orbits?

Coming from the Internet world, we have ICANN and IANA, a "traffic manager" which makes sure that the internet doesn't break by accident, by allocating resources (like IP ranges and top-...
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23 votes
2 answers
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Why did Cassini require so much more power than other probes?

Inspired by the comment by Nick S on this answer by Organic Marble, what made Cassini require so much power? An excerpt from the aforementioned answer: The flight units used by mission, with power ...
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23 votes
1 answer
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Why are there four RTGs in a row sitting in this room? What are they waiting for? Were they built together and stored for separate launches?

The extremely cool NASA JPL video Triumph at Saturn (Part I) is really worth a watch and/or listen. At about 17:40 it discusses Cassini's RTG and at ...
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Where can I read about the other 17 telescope proposals that NASA’s Astrophysics Explorers Program didn't accept in 2019?

Update: Per @DH's comment: Possibly nowhere, except for brief and oftentimes inscrutable summaries. The summaries have to be publicly releasable. Proposers often do their best to make the publicly ...
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