As viewed from Earth, Arcturus is dimmer than the Sun, but actually, it is brighter. Why? Arcturus is than the Sun. Apparent Absolute |(light years) Magnitude Magnitude 5.0 Distance Name Sun NA -26.7 Alpha Centauri Sirius Arcturus Betelgeuse Deneb 4.27 0.0 4.4 8.7 -1.4 1.5 36 -0.1 -0.3 520 0.8 -5.5 1600 1.3 -6.9 O a.bigger |b. farther Oc. cooler O d. hotter

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