Europa is Jupiter's brightest moon. This is because...
Jupiter is the second brightest planet in the sky after Venus and the fourth brightest object in the sky. The sun and the moon are the brightest objects in the sky, but they are not planets.
The second Brightest planet is Jupiter.
Jupiter is the second brightest in the world after the sun
Europe
Jupiter is the second brightest planet after Venus.
Clouds would be second. Beyond earth's atmosphere the moon would be the brightest object in the sky, now followed by the International Space Station. Venus has been displaced from 3rd to 4th place. None of these objects shine with their own light, but from reflected light of our sun.
The moon Io looks the brightest from the surface of Jupiter. That's because Io is the closest moon to the planet. Io is the moon on the left of the planet.
because it is the closest to jupiter
IO
Ganymede is the largest moon of Jupiter and would appear the brightest from the planet due to its size and reflectivity. Ganymede's icy surface reflects a high amount of sunlight, making it one of the brightest objects in Jupiter's sky.
The moon Io would look the brightest from the surface of Jupiter because It is the nearest.
The brightest object as seen from us is the Sun.The next-brightest objects are the Moon, Venus, Jupiter, and Mars (on rare occasions, Mars can actually be a bit brighter than Jupiter).