Which Happened First?

Gravity Recovery and Climate Experiment

Gravity Recovery and Climate Experiment
Image: NASA · Public domain · source

The Gravity Recovery and Climate Experiment (GRACE) was a joint mission of NASA and the German Aerospace Center (DLR). Twin satellites took detailed measurements of Earth's gravity field anomalies from its launch in March 2002 to the end of its science mission in October 2017.

Summary from Wikipedia (CC BY-SA 4.0) · Dates from Wikidata (CC0)

Which happened first?

Timeline

  1. Cassini−HuygensOctober 15, 1997
  2. Mars Polar LanderJanuary 3, 1999
  3. Gravity Recovery and Climate Experiment (this page)March 17, 2002
  4. THEMISFebruary 17, 2007
  5. Gravity Recovery and Interior LaboratorySeptember 10, 2011
  6. Van Allen ProbesAugust 30, 2012

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Gravity Recovery and Climate Experiment (March 17, 2002) · Which Happened First?