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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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Why are JPL using this expression to emulate Schwarzschild orbits?

From the documentation ”Formulation for Observed and Computed Values of Deep Space Network Data Types for Navigation ” expression 4-61 on page 4-42 it can be seen that JPL uses the following ...
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How can Trident be so inexpensive? Will it orbit Triton or just do a (slow) flyby?

The recent NY Times article Neptune’s Moon Triton Is Destination of Proposed NASA Mission says (in part): HOUSTON — Is it time to go back to Neptune? Scientists representing NASA’s Jet ...
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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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Why would an 8-minute burn result in a 6-month delay?

The Ars Technica article Vice President may tell NASA to accelerate lunar landings ends with: And on Thursday, NASASpaceFlight.com reported that the agency is considering skipping a critical test ...
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Do all US vice presidents get cool jackets?

The Ars Technica article Vice President may tell NASA to accelerate lunar landings starts with "We're tired of generating PowerPoint journeys that don't go anywhere." and explains that one or ...
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How to create a new reactant Ammonium Dinitramide NH4[N(NO2)] in NASA CEA?

Ammonium Dinitramide(ADN) is a compound used as a green propellant for spacecraft propulsion applications. ADN-blends like LMP103S and FLP-106 are currently under development. However, performing a ...
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Identify this astronaut and shuttle mission

After about 02:00 in the Kinematic video SpaceX Delivers Critical Docking Adapter for NASA to the ISS the astronaut says: You know the Space Shuttle’s been with ...
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Surmountability of the technical risks to launching EM-1 on commercial rockets?

NASA administrator Bridenstine announced that commercial rockets (e.g., Delta Heavy and Falcon Heavy) would be considered as ways to launch EM-1 by July, 2020. Such a move would reportedly require a ...
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Can Delta Heavy launch a fully fueled upper stage with no payload attached?

There is right now talk of a potential dual launch mission to fulfill EM-1, where a Delta Heavy would launch a fully fueled upper stage to LEO, to there bet met with the Orion spacecraft, likely ...
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What is under these four white covers on the upper part of the Orion capsule?

The New York Times article A NASA Journey to the Moon May Need to Find Another Rocket or Two shows an image of the Orion capsule in a file photo, along with the NASA director. There are four white ...
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What exactly is the purpose of connection links strapped between the rocket and the launch pad

I am curious on what are those multiple connection cables latched between the rocket and launch pad. What exactly is the purpose of it, I am aware that one should be for filling up the fuel. But ...
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Are there any scientific or technical reasons for defunding WFIRST?

This week, the White House announced its proposed budget for fiscal year 2020, which of course includes NASA's budget for the same time period. Notably, for the second year in a row, it proposes ...
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Do space stations have standardized officer designations for crew?

I have some anecdotal information. The ISS has a commander, and I noticed here that it had a Flight Engineer, and in this article (found here) I see that Skylab had a Science Pilot. Do space stations ...
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NASA's RS-25 Engines shut down time

As a follow up to my other question about RS-25's ramp-up time, I was wondering what would be the ramp-down times for the RS-25, i.e. what would be the time that takes to go from 100% thrust to 0% ...
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Why is there no exosphere demonstrating moon dust and particles in the Apollo footage?

I have read dust levitates on the moon's surface extending to 100 miles in the sky (horizon) creating an exosphere. Dust levitates because the surface of the moon and dust particles have become ...
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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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What did Apollo 11's SSTV signal sound like?

The TV signal from Apollo 11 had limited bandwidth, and an oddball format was used to send and convert the signal. All of the modern SSTV demos I've seen on YouTube seem to take around a minute to ...
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Did NASA tell the Skylab astronauts to “Stop running around!”?

This answer to the question starts with: This video may help to answer your question. Starting at about 00:24, you can see an astronaut running around the "exercise wheel" of Skylab (an early NASA ...
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How does SpaceX plan to obtain Oxygen in Mars?

In the ISS they obtain Oxygen from water through electrolysis. I guess this could be possible in Mars if they land near a large water source. NASA in the other hand, it's working for ways to obtain ...
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How many people spoke to Apollo 8 from outside the US?

@PearsonArtPhoto's answer links to the page Apollo 8, 21 – 28 December 1968 by Hamish Lindsay at honeysucklecreek.net. It shows a clipping from The Canberra Times front page, "With thanks to Mike ...
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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 ...
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Why is NASA buying expensive rockets from ULA when SpaceX is offering the same thing for almost half the price?

Source: https://www.teslarati.com/spacex-ula-nasa-launch-contract-win-vastly-overpriced-official-protest/ SpaceX has filed an official protest with the US Government Accountability Office (GAO) ...
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How did NASA's Deep Space Network encode and broadcast music to Opportunity?

@Ingolifs's answer to the question What was the last message to Opportunity today (13 Feb '19)? quotes ArsTechnica's Opportunity did not answer NASA’s final call, and it’s now lost to us: Late ...
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Orion Exploration Mission-1; clarification and additional trajectory information?

This September 2017 video NASA | Exploration Mission-1 – Pushing Farther Into Deep Space is over a year old. I found some aspects interesting and wonder if more details about this trajectory are now ...
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How do astronauts keep their devices dry?

In these videos astronauts are drinking and playing with water. We can see water droplets floating away to the surroundings. Do these droplets affect the machines in any way? What do astronauts do to ...
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Will the Insight seismometer use the deployment of the Heat Flow and Physical Properties Probe as a known impact source for sounding purposes? [duplicate]

As the Heat Flow and Physical Properties Probe (HP3) hammers itself into the Martian soil, it will generate impacts of known intensity. I have not been able to find anything on https://mars.nasa.gov/...
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Which Chinese citizen co-founded JPL? Who are JPL's “founders” in general?

The Wired UK article The epic tale of China's out of this world plan for space domination says: A Chinese citizen co-founded the JPL, but these days no Chinese officials are allowed on a Nasa site ...
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JSC has reorganized its website. Where is the old /news/columbia information now?

At some point after the STS-107 failure, Johnson Space Center posted a lot of valuable material online that hadn't been publicly available before. Especially the STS Generic Flight Rules, which used ...
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Is no one except Elon Musk using steel to build rockets? [duplicate]

Recently Elon Musk tweeted this picture of the SpaceX prototype Starship, which they will use for VTOL. He said that steel is cheaper compared to carbon fiber and has high melting point etc, which ...
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What are these membranes at the aft end of the Shuttle that get torn off during lift off?

The link to the Space Shuttle launch video. At 1:30 mark, three circular disks get torn away. It happens immediately after the engine ignition begins. Here is a cropped image of the Discovery after ...
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Does NASA still plan for the Mars Ascent Vehicle to burn wax from the surface to orbit?

The NASA news item From Pedicures to the Peregrine Rocket, Paraffin Wax Proves Its Worth says: The paraffin-based fuel also works under challenging environmental conditions, like the very low ...
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What's going on with NASA's Solar System Dynamics?

JPL's Horizons web interface generates the following orange announcement: IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including ...
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How was New Horizons able to direct data so precisely back to Earth?

The New Horizons space probe is sending back images of Ultima Thule, 6.4 billion kilometres away. Barring having a very large power to send information back on a very large angle, it seems to me ...
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Is there any reason that NASA's launched space probes and MERs usually operate decades longer than expected?

Space Probes & MERs History Recap Pioneer 10 & its twin probe Pioneer 11 reference Courtesy of Uwe's response on my question :- Pioneer 10 was planned for 21 months of operation. ...
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What impact does the Dec 2018 partial shutdown of the US Federal Government have on current space missions?

Title says it all really? Will the staff operating Curiousity, Insight, Juno, etc. continue to work? What about staff supporting them indirectly?
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How do NASA Venture Class Launch Services Contracts work?

The Rocket Lab YouTube video ELaNa 19 Launch - 12/16/2018 contained a short video which was preceded by the following explanation after about 08:00: Today’s ...
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What is the origin of Black knight satellite? [closed]

Is it true that an extraterrestrial satellite orbits earth in retrograde? If the Black knight exists, can we presume that it is placed there by aliens who are technologically more advanced than ...
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What kind of ground-based radio astronomy is NASA's DSN used for? Who are the PIs?

I looked at DNS Now to check on Hayabusa-2 and compare to http://haya2now.jp/en.html and saw that DSS 34 in Canberra is currently in setup/teardown for Ground Based Radio Astronomy! In this status ...
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Manned entry to Mars

Did Insight have a ballistic entry? If so, does NASA plan a ballistic or skip-glide entry for manned missions to Mars?
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How long to surpass Voyager satellite distances using modern technology? [duplicate]

NASA's JPL just recently acknowledged that Voyager II has now joined Voyager I in entering interstellar space after 41 years of space travel. This got me to wondering: when will we ever get to Alpha ...
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How well the orbits of Jupiter Trojans to be visited by Lucy may be predicted?

The orbits of the large planets are very well known and their position may be precisely predicted for the planning of complex swing by maneuvers of interplanetary space probes. There are exact ...
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What was the colour of the shoes used by the Apollo astronauts in moon landing?

The pictures from Apollo landing despite being in high resolution, does not reveal the right colour of the shoes used by the astronauts during the EVA on the moon. An example - Buzz Aldrin picture ...
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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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What is this retroreflector on the Mars InSight lander used for?

I saw an image of the ISight lander in this answer. I cropped the image from the much larger image PIA22540. What is this small optical retroreflector used for? Laser ranging from a Mars orbiter ...
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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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Do astronauts currently need to retire from NASA before they can associate themselves with products?

NASA administrator Jim Bridenstine raised the idea that NASA astronauts could somehow be associated with commercial products in his address to the NASA Advisory Council a few months ago. After around ...
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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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How can I de-fisheye NASA InSight raw images?

NASA Insight (as other past and future missions) provide distorted images. Which site can I use to automatically fix such distortion, without downloading and processing each single image I am ...
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Is there a live feed from InSight anywhere?

OK so I know it's not "live" given the distances involved (so you can put your pedant hat away), but is there a feed where we can see the images & video from it more or less at the same time as ...
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Understanding the information contained in the Deep Space Network XML data?

NASA's Deep Space Network activity can be viewed conveniently at https://eyes.nasa.gov/dsn/dsn.html but if you would like data in a more raw XML form, it can be accessed as described in this answer ...