There is enough sunlight reflecting off them and reaching our eyes.
The planets are visible because they are quite large in space. When the sun hits them they are visible on Earth.
The planets have to be visible to be discovered.
size, rings and moons
Venus and Jupiter are prominently visible these days.
It's true that the moon and visible planets are always within a few degrees of the ecliptic. They are all on the same plane.
Go to stardate.com
the naked eye determines if it is visible.
Venus and jupiter
The planets most certainly ARE visible in the northern hemisphere.
the 5 most visible planets are the biggest planets such as jupiter saturn and mars pluto is to small and murcury isnt visible due to the suns rais.
Venus Jupiter
They are both visible and inside the solar system.
There are generally a couple of planets visible every night of the year. Which planets will be visible and when depends on where each of the planets (and the Earth itself) are in their orbits. Here on August 28, 2009, for example, Jupiter rises about sunset and is brightly visible all night. Venus and Mars rise before dawn. Saturn and Mercury are not visible this month, because they are too close to the Sun to be seen.
the stars and some of our planets
Uranus
Venus and Jupiter are prominently visible these days.
Planet Gorgone
All of them do, Saturn's are the most visible.
It's true that the moon and visible planets are always within a few degrees of the ecliptic. They are all on the same plane.
amar goo khaa