Ohhhh, using seismic data (Marsquakes FTW!) observed by @NASAInSight - scientists have now measured the Martian core to be 1830 km with an error bar of ± 40km!
And it’s liquid!
science.sciencemag.org/content/373/65…
And it’s liquid!
science.sciencemag.org/content/373/65…
Love this cover art @ScienceMagazine 
Unexpected rabbit hole of the Mars liquid core paper from this morning ... chasing down historical papers values of the mean core density (compared with the 5.7 to 6.3 g/cc reported) in reflection of JPLs ephemeris data (which also use Mars mass to establish Asteroid belt mass)
I know it is a long shot to get there, but believe it or not, this kinda stuff is related to pulsar timing!
The better the masses of Solar System bodies known, the better the location of the Solar System Barycentre is known, and when you are dealing with nanosecond scales ...
The better the masses of Solar System bodies known, the better the location of the Solar System Barycentre is known, and when you are dealing with nanosecond scales ...
The change in core density is probably under the PTA SSB impact limit, but I *REALLY* love exploring this stuff .... even if the answer is negligible, it's still pretty cool to learn about how these masses impact the position of the SSB at these tiny scales.
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