Regardless of the time of day, the season, or what the moon is doing, the brightest star in the sky is the sun, and the second brightest is Sirius, in the constellation of Canis Major. Note that Venus, Mars, and Jupiter are capable of being brighter than Sirius depending on where they are in their orbits relative to Earth. But they are planets, and you asked for the brightest "star".
it is brightest when it is a clear night and no stars or nothing blocking the moon in outer space
The only reasons why you wouldn't be able to see the full moon would be that either it is daytime (the full moon rises at sunset, and sets at sunrise), or it is during totality of a lunar eclipse, or your eyes are closed. The full moon is the brightest thing in the night sky. It's almost possible to read by it.
brightest
a full moon looks like a full circle or a cookie or just a full moon!
the moon because it is bigger at night
Most people think they .come out on a full moon because of werewolves or something like that, actually they come out on full moons because it's the brightest night you'll get, so it's the best time for them to hunt and come out to explore territory.
A volcano
Blue-white stars are the hottest and brightest stars; Sirius A (and its white dwarf companion Sirius B) is the brightest star in Earth's night sky.
Full moon, or within one day of the full.
During New Moon and Full Moon, the moon's gravity pulls on the oceans more than during the other phases. Therefore at night time the tides are highest under the full moon.
During full moon; the sun, earth and moon are perfectly in line with each other. This is the only time the moon passes through the earth's shadow (night side), so a lunar eclipse can only occur during the full moon phase.
The next brightest body in the sky, after the sun and the moon, is the planet Venus. The brightest star is the one called "Sirius", in the constellation "Canis Major".