The Interior Exploration using Seismic Investigations, Geodesy, and Heat Transport (InSight) mission has provided an opportunity to improve our knowledge of Mars’ interior via the Rotation and Interior Structure Experiment (RISE). RISE provides information on the rotation of Mars by measuring the Doppler shift of radio transmissions from InSight to NASA’s Deep Space Network (DSN) on Earth. Through the combination of one year of Doppler data from InSight with previous data from the Viking-1 lander, Mars Pathfinder, and Opportunity missions, data spanning 43 years from 1976 to 2019 are used to estimate the Mars precession rate as −7605 ​± ​3 milliarcseconds per year. This result is consistent with the precession rate estimated from Doppler tracking of previous landers and orbiters alone.

使用地震调查，大地测量学和热传输（InSight）任务进行的内部探索为通过旋转和内部结构实验（RISE）提高了我们对火星内部的了解提供了机会。RISE通过测量从InSight到地球上NASA的深空网络（DSN）的无线电传输的多普勒频移来提供有关火星自转的信息。通过将InSight的多普勒一年数据与Viking-1着陆器，火星探路者和机会任务的先前数据相结合，使用了1976年至2019年间43年的数据来估计火星进动率为−7605±每年3毫秒。这一结果与多普勒跟踪仅对先前着陆器和轨道器的估计进动率相一致。