100000000 times earths light
The sun.
Venus is occasionally brighter than jupiter
Venus, at its brightest, is brighter than any other planet. However, when it's not at its brightest, there are a couple of others than can be brighter if they're near their brightest, Mars and Jupiter being the most notable.
Mercury is hotter than Venus and Venus is brighter than Mercury
Venus.
Venus has an apparent magnitude [See related link] of -3.82 when it is opposite from the Sun, whereas Sirius has an apparent magnitude of -1.47. So Venus is always brighter (When seen) than Sirius.
Venus is much brighter than Mars. Only the Moon and the Sun are brighter than Venus.
Venus is occasionally brighter than jupiter
Venus, at its brightest, is brighter than any other planet. However, when it's not at its brightest, there are a couple of others than can be brighter if they're near their brightest, Mars and Jupiter being the most notable.
Mercury is hotter than Venus and Venus is brighter than Mercury
Because it is nearer that the stars.
Yes
becacue mercury is smaller than venus
Venus.
Venus has an apparent magnitude [See related link] of -3.82 when it is opposite from the Sun, whereas Sirius has an apparent magnitude of -1.47. So Venus is always brighter (When seen) than Sirius.
Venus, when it's at its brightest, is brighter than any other planet. At any given time, though, which planet is brightest can vary; it's often Venus, but a reasonable fraction of the time Mars and Jupiter give Venus a run for its money.
Only the sun and the moon.
Sun rays are more easily reflected on clouds than earth.