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This article provides estimates of zonal harmonics down to $J_8$ derived from Doppler data in the Juno mission.* Tesseral harmonics are "statistically zero as expected for a fluid planet in equilibrium". The article also compares the zonal harmonics estimates to past estimates from the Pioneer and Voyager missions. The values are reported in Table 2, ...


We don't really know. A study from 2012 suggests that lichens and cyanobacteria could indeed survive the "obvious" perils of Mars, including radiation, low pressure, and temperatures dropping as low as $-50°\text{C}$. In 2012 the Planetary Society reports a two-stage experiment performed at the German Aerospace Center, in which (1) organisms were ...


From Gizmodo's Now You Can Listen to Marsquakes: After landing on Mars last year, the InSight probe deposited a sensitive seismometer called the the Seismic Experiment for Interior Structure (SEIS) on the Martian surface. After first recording a strange, possible Marsquake this past April, the experiment has now counted at least 21 quakes among 100 ...


I haven't used it myself, so I don't know what the track record is like, but this one seems pretty all inclusive:


I use this from SpaceFlightNow: For launches since it tracks them pretty far out

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