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Keck Observatory on Hawaii's Mauna Kea, they could detect slight variations in stellar motion via the redshift and blueshift of the Doppler effect -- which helped them determine planetary mass readings of unprecedented precision.

By carefully examining the spectrum of SDSO-1, the velocity of its gas can be determined via the Doppler effect—the slight blueshift of its color if the gas is moving toward us or the redshift if it’s moving away.

Caroline Nash, a river scientist at the consulting firm CK Blueshift LLC who has published research on beaver-related restoration, emphasized that projects should be evaluated on a case-by-case basis.

This can be seen clearly in this map of the 2016 presidential vote by county, which I generated using tools provided by Blueshift.

There is a small but apparent spectral shift of the emission data upon decreasing the temperature that is generally expected for low-temperature experiments, resulting from thermal effects, including temperature-dependent solvent reorganization effects, causing a gradual blueshift and sharpening of the emission features.