Distance Measurements
The "distance" of a far away galaxy depends on what distance measurement you use. With a redshift of 5.47, light from this active galaxy is estimated to have taken around 12.3 billion light-years to reach us. But since this galaxy is receding from Earth at an estimated rate of 285,803 km/s (the speed of light is 299,792 km/s), the present (co-moving) distance to this galaxy is estimated to be around 26 billion light-years (7961 Mpc).
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Famous quotes containing the word distance:
“It is painful to recall a past intensity, to estimate your distance from the Belsen heap, to make your peace with numbers. Just to get up each morning is to make a kind of peace.”
—Leonard Cohen (b. 1934)