bananamathpi (bananamath)

Race #34

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Official speed 109.21 wpm (31.98 seconds elapsed during race)
Race Start February 3, 2019 1:43:36am UTC
Race Finish February 3, 2019 1:44:08am UTC
Outcome Win (1 of 2)
Opponents 2. pugslyyy (86.53 wpm)
Accuracy 99.0%
Points 89.19
Text #4190347 (Length: 291 characters)

We can determine the present rate of expansion by measuring the velocities at which other galaxies are moving away from us, using the Doppler effect. This can be done very accurately. However, the distances to the galaxies are not very well known because we can only measure them indirectly.