New answers tagged planetary-science
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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, ...
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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 ...
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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 ...
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I haven't used it myself, so I don't know what the track record is like, but this one seems pretty all inclusive:
http://www.spacecalendar.com/
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I use this from SpaceFlightNow:
https://spaceflightnow.com/launch-schedule/
For launches since it tracks them pretty far out
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