able 1 shows the luminosity (brightness) of several stars with respect to the Sun. A luminosity value of 1 means the star is as bright as the Sun. A luminosity value of 2 means the star has twice the brightness of the Sun.
How bright each star in Table 1 is with respect to the Sun?
Proxima CentauriAlpha Centauri AAlpha Centauri BSiriusRanTau Ceti
0 - 00.1
0.01 - 0.1
0.1 - 1
1 - 2
2 - 10
Brighter than 10 times