Venus/ˈviːnəs/ Definition 1 of 4Pro Tip 1/3Astronomical Term Used in science and space-related topics to discuss the planet's characteristics. The temperatures on Venus can reach over 450°C. Pro Tip 2/3Brightest Planet Often mentioned in discussions about the night sky and its visibility from Earth. Due to its brightness, Venus is sometimes mistaken for a UFO. Pro Tip 3/3Not a Star Avoid confusing Venus with a star; it's a planet that reflects sunlight. Venus looks like a star but orbits the sun just like Earth does.