46 votes

Did Apollo 13 produce any scientific results?

It did, with the third rocket stage. Instead of just becoming another object in solar orbit like the previous Apollo third stages, this time the third stage was sent into the Moon for a crash landing ...
Oscar Lanzi's user avatar
  • 8,505
30 votes

Did Apollo 13 produce any scientific results?

In addition to crashing the Saturn V's S-IVB into the moon to collect seismic data from sensors installed by the crews of Apollo 11 and 12, several life sciences experiments were performed on the crew ...
Justin Braun's user avatar
  • 2,275
12 votes
Accepted

What exactly are the recent observations of organics on Mars? What's the data?

There are currently (June 2018) two new papers (links may be paywalled): "Organic matter preserved in 3-billion-year-old mudstones at Gale crater, Mars", Eigenbrode et al., Science 360, 1096–1101 (...
Bob Jacobsen's user avatar
  • 12.7k
12 votes

Hijacked space data, notable instances of recovering images or other goodies from someone else's space mission?

Two items of note: Luna 9's initially released pictures came from scientists at Jodrell Bank Observatory in England, which could be received because they were in a standard format. This came ahead of ...
PearsonArtPhoto's user avatar
  • 121k
11 votes
Accepted

Is there free, accurate and updated data on planetary body positions in the solar system?

For integration into software, I would recommend the SPICE toolkit, available with interfaces for C, Fortran, IDL, and MATLAB, and the many SPK kernels that can be loaded into SPICE containing the ...
Mark Adler's user avatar
  • 58.2k
11 votes

Hijacked space data, notable instances of recovering images or other goodies from someone else's space mission?

note: Here are two examples of "hijacked signals" that include "public release of the images or data that included the admission that it is 'stolen' or 'hijacked'." I am sure there are a few more. One ...
uhoh's user avatar
  • 149k
10 votes

Why is the Duration of Time spent in the Dayside greater than that of the Night side of the Moon for Chandrayaan-2 Orbiter?

The degree of orbital shadowing experienced by an orbiting object with small orbital altitude is determined by its beta angle (normally used in reference to LEO objects but the concept applies to ...
Organic Marble's user avatar
10 votes
Accepted

What are the data storage capabilities onboard the James Webb Telescope?

This user guide seems to be reasonably recent (2017) and answers your question. The solid state recorder (SSR) onboard JWST can hold at least 58.8 Gbytes of recorded science data. JWST ...
Steve Linton's user avatar
  • 19.6k
9 votes
Accepted

What is the slope of the sides of Aristarchus crater on the Moon?

The slope is over 50 degrees at some point. I made a quick pseudocolor rendering of the slope with QGIS using the global DEM from LRO LOLA. The slope was generated from the DEM using QGIS's slope ...
yzokras's user avatar
  • 1,004
8 votes

Can I find detailed flight parameters of some space mission(s)?

The "Flight Evaluation Reports" from the Apollo missions have a number of data plots and tables that may help you. Bob Braeunig developed a simulation that matched the Apollo 11 flight report rather ...
Russell Borogove's user avatar
8 votes

How can the CYGNSS spacecrafts (actually) measure ocean roughness?

Addressing multipath has long been a challenge with regard to GPS. Carrying a GPS-enabled smartphone toward the heart of a large city results in GPS-estimated positions and altitudes that bounce ...
David Hammen's user avatar
  • 74.8k
7 votes
Accepted

"UK schoolboy corrects Nasa data error" - what precisely was the "error"?

The source of the data is the Radiation Environment Monitor. Lawrence S. Pinsky is listed as co-investigator. This Radiation Environment Monitor demonstration will provide information that is ...
Hobbes's user avatar
  • 128k
7 votes
Accepted

When scientific and engineering data are sent from space probes, are the signals repeated to minimize transmission error?

Signals are not repeated, but instead coded in a special way that allows to reconstruct the original data on the receiver side in presence of noise/errors. It is called forward error correction. FEC ...
filo's user avatar
  • 1,432
7 votes

Why is the Duration of Time spent in the Dayside greater than that of the Night side of the Moon for Chandrayaan-2 Orbiter?

There is no circular orbit that has a share of 50:50 between night and day. The possible times are a bit less than 50% to 0% night or, respectively, a bit more than 50% day to 100% day. The two ...
asdfex's user avatar
  • 15k
6 votes

Hijacked space data, notable instances of recovering images or other goodies from someone else's space mission?

Tracking Apollo-17 from Florida http://www.svengrahn.pp.se/trackind/Apollo17/APOLLO17.htm On December 10, 1972 we picked up our first signals on S-band. The main carrier was 45 dB over noise and the ...
A. Rumlin's user avatar
  • 7,873
6 votes

How can the CYGNSS spacecrafts (actually) measure ocean roughness?

Short version: you have to read the Algorithm Theoretical Basis Documents (ATBD), conveniently collected at https://clasp-research.engin.umich.edu/missions/cygnss/data-products.php . All of them. ...
Ryan C's user avatar
  • 7,942
6 votes
Accepted

Is data from Huygens still being analyzed in 2018?

A quick search on Google Scholar turns up 106 articles published in 2018 using Huygens' data. So I'd say the data is still being analyzed and used.
Hobbes's user avatar
  • 128k
6 votes
Accepted

How will OSIRIS-REx scan and characterise the near-earth asteroid Bennu?

OSIRIS-REx is packed all full of good stuff. I'll throw together a quick list of the scanning ones you're interested in. Also of note is that the entire spacecraft will be making that scanning ...
M.A.H.'s user avatar
  • 1,266
6 votes

NEAR Shoemaker mission data

All the data from the NEAR Shoemaker mission is archived at the Small Body Node of the NASA Planetary Data System. Asteroid surface properties (the regolith) is normally measured using images or ...
astrosnapper's user avatar
  • 2,506
5 votes

How can the CYGNSS spacecrafts (actually) measure ocean roughness?

The CYGNSS spacecraft will use a technique called "Delay Doppler Mapping". Each satellite will be equipped with a Delay Doppler Mapping Instrument (DDMI), which is capable of receiving four DDM's at ...
Phiteros's user avatar
  • 5,626
5 votes

Data from space missions

NASA requires all missions to release the raw data on a regular basis, in particular to the Planetary Data System. ESA releases their data to the Planetary Science Archive. Russia releases it's data ...
PearsonArtPhoto's user avatar
  • 121k
5 votes
Accepted

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

Never. The goal of PubSpace as stated by NASA themselves: NASA is using PubMed Central (PMC) to permanently preserve and provide easy public access to the peer-reviewed papers resulting from NASA-...
Hobbes's user avatar
  • 128k
5 votes

Why is the Duration of Time spent in the Dayside greater than that of the Night side of the Moon for Chandrayaan-2 Orbiter?

It all depends on how you define "dayside" and "nightside", and how you define "entering" or "exiting" either one of them for a satellite. I suppose a big part of the confusion comes from this ...
Mike Nakis's user avatar
4 votes
Accepted

Ceres gravity from spherical harmonics from Dawn, how to get the coefficients, definitions and potential?

What you're missing is the descriptions of the contents of that file. That's in another file, right next to the one you found. The data for the Ceres gravity model are in JGDWN_CER18C_SHA.TAB and the ...
David Hammen's user avatar
  • 74.8k
4 votes
Accepted

What does this paper say is wrong (quantitatively and procedurally) with WISE & NeoWISE asteroid data?

Upon reading "An empirical examination of WISE/NEOWISE asteroid analysis and results": As I understand it, nothing is wrong with the data obtained from the missions. What is wrong is the ...
anon's user avatar
  • 1,020
4 votes
Accepted

What are InSight's barometric and seismic digitization rates and frequency responses when it "listens to the wind"?

The page at the NASA Planetary Data System Planetary Atmosphere Node on the Temperature and Wind for InSight (TWINS) instrument and Pressure Sensor (PS) has a description of the instrument and data ...
astrosnapper's user avatar
  • 2,506
4 votes

Were there any policies or technical reasons for powering down all Apollo ALSEPs in 1977?

A number of online resources (NASA & https://astronomy.com/news/2019/06/what-did-the-apollo-astronauts-leave-behind) state the reason for decommissioning the Apollo ALSEPs on September 30, 1977 ...
Fred's user avatar
  • 13.1k
4 votes

When scientific and engineering data are sent from space probes, are the signals repeated to minimize transmission error?

Just a single repetition would not help. If there is a single error within those two data blocks, you do not know where the error is and have no chance to correct the error. If the data is ...
Uwe's user avatar
  • 49k
4 votes
Accepted

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

As an information security professional this makes me cringe, but I'm not in the last surprised. I've read the OIG report, there's not that much information on the data that is lost, but the report ...
GdD's user avatar
  • 20.3k
3 votes
Accepted

Satellite Positions in ICRF

Skyfield, at http://rhodesmill.org/skyfield (note the similarity to the location for PyEphem, not a coincidence) does exactly what you are asking for. You give it a TLE and you get coordinates in ICRF ...
uhoh's user avatar
  • 149k

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