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Questions tagged [jpl]

Jet Propulsion Laboratory(JPL), in Pasadena, California, is a joint venture between NASA and the California Institute of Technology(Caltech) to develop and operate robotic spacecraft missions (such as the Curiosity and Opportunity rovers on Mars). Use for questions specifically about JPL.

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When was the idea behind the DESCANSO Book Series first conceived, by whom, and what is its "mission"?

When was the idea behind the DESCANSO Book Series first conceived, by whom, and what is its "mission"? When I'm looking for information on deep space issues including communications and ...
uhoh's user avatar
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9 votes
1 answer
454 views

Tradeoffs between using two 34 m and one 70 m Deep Space Network dish?

Discussion at this answer to Why does DSN sometimes uses two dishes at the same time to receive Voyager-1? include the possibility that in some cases it would be preferable to use two 34 meter DSN ...
uhoh's user avatar
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5 votes
1 answer
576 views

What information was stolen from JPL during the Raspberry Pi hack?

The Engadget article A rogue Raspberry Pi helped hackers access NASA JPL systems highlights an incident where a networked Raspbery Pi at JPL was used to gain access to several other networks, ...
uhoh's user avatar
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7 votes
1 answer
622 views

What is the history behind having peanuts in mission control during critical missions?

The InSight mission livestream showed a jar of peanuts with what appears to be the MarCO logo. Why is was this a significant shot in the livestream? Is there history behind this?
Shane Fontaine's user avatar
6 votes
4 answers
898 views

Access to Chebyshev coefficients from JPL ephemerides

I want to generate an ephemeris file containing the Chebyshev coefficients, similar to how we can generate ephemeris file of positions with Horizon tool (https://ssd.jpl.nasa.gov/horizons/app.html#/). ...
GuillaumeJ's user avatar
4 votes
2 answers
722 views

How to obtain Chebyshev coefficients directly from the JPL Horizon's interface?

I'm from Spain and I'm currently finishing my degree in Aerospace Engineering. I am starting with all of this. My objective is to obtain the Chebyshev coefficients for the major planets position, ...
Diego Suárez González's user avatar
1 vote
1 answer
263 views

Was the famous SPICE package of programs, utilities and data kernels named after "Melange" found on the planet Arrakis?

This question is NOT about a fictional planet: This question is about NASA JPL history and the naming of SPICE. It is not primarily about the fictional planet Arrakis nor the fictional drug Melange ...
uhoh's user avatar
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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 ...
uhoh's user avatar
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5 votes
1 answer
164 views

When NASA spacecraft arrive at Mars, is Mars always always above the horizon in the US?

Writing How long did the plasma blackouts of Perseverance's signals to MRO and direct-to-Earth last during its seven minutes of terror? I noticed that Mars was high in the sky over the Green Bank ...
uhoh's user avatar
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4 votes
1 answer
647 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 ballistic ...
uhoh's user avatar
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3 votes
1 answer
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What JPL laboratory is this exactly, and what are the functions of these amazing-looking control panels?

The (somewhat strangely named) video clip How William Shatner Changed the World - Dr. Marc D. Rayman, Chief Propulsion Engineer, NASA, JPL contains several shots of what looks like an ion propulsion ...
uhoh's user avatar
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2 votes
1 answer
182 views

Are the Perseverance rover's "drivers" working on Martian sols or Earth days right now?

Business Insider's What is it like to drive the Perseverance rover remotely? A NASA engineer explains the challenges of piloting the vehicle's journey across Mars. includes the following discussion of ...
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