How fast are you really going?

your speed right now
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km/h
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This is the speed at which we move relative to the "stationary" Universe — the rest frame of the cosmic microwave background (CMB). It combines the Solar System's base velocity (369.8 km/s) with Earth's orbit, which alternately speeds us up and slows us down.
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year minimum…year peak
Next peak
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Next minimum
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Speed over the year · Sydney · km/h

Distance traveled

This second
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we fly right now
Since opening
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and it keeps growing
Per year
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≈ 84 Earth–Sun distances

3D: Earth · day & night · our velocity

drag to rotate · scroll to zoom · double-tap to center your city
day — lit by the Sun · night — Earth's shadow your city — highlighted on the globe white arrow — our total velocity green — Earth's orbital velocity (×2.5 exaggerated)

Our clock vs CMB

We fly at 0.12% of light speed — our clocks tick slower than clocks at rest in the CMB. The lag accumulates: relativistic time dilation.
Lag behind CMB
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since opening · time runs slower
Per year
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28 s at December peak, 20 s in June
Over 70 years
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that much younger than clocks at rest in the CMB

City leaderboard — who is flying faster now

Updates every 5 seconds · depends on the city latitude and Earth's daily rotation

Distance calculator. How far we've flown together?

At the average speed — 1,331,352 km/h relative to the CMB (base, Planck 2018), not today's speed
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Average speed 1,331,352 km/h — CMB dipole base; Earth's orbit adds a ±108,000 km/h annual modulation that averages out.

Feedback

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