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Logo: Sonderforschungsbereich geo-Q
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Logo: Sonderforschungsbereich geo-Q
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First light for GRACE Follow-On Laser Interferometer

Space between two satellites measured for the first time with laser interferometry

On June 14, 2018 the laser ranging interferometer (LRI), a novel instrument onboard the GRACE Follow-On satellite mission delivered first measurements.

Since then, the LRI has been taking scientific measurements in parallel to the main microwave ranging instrument. Initial results agree well, and the research team is optimistic that the LRI’s improved precision will assist in tracking indicators of climate change by observing Earth’s gravity field and its variations.

GRACE Follow-On is a joint project of NASA with German partners, which are led by the GFZ German Research Centre for Geosciences.

For more information please consult the Research News at the Albert Einstein Institute Hannover.