* Brightness: Both Jupiter and Venus are very reflective. Jupiter is the largest planet in our solar system and has a thick atmosphere that reflects sunlight. Venus is closer to the sun than Earth and has a dense atmosphere made up of clouds that reflect sunlight back into space.
* Proximity: Venus is the closest planet to Earth, making it the brightest object in the night sky after the moon. Jupiter is the fifth closest planet to the sun, but its large size means it still appears very bright to us.
* Opposition: Occasionally, Jupiter and Venus will be in opposition, meaning they are on the opposite side of the Earth from the sun. This makes them appear even brighter and easier to see.
Here's the key: You can only see celestial objects in the night sky if they are reflecting enough light back to Earth. Jupiter and Venus are both very good at reflecting sunlight, making them easily visible to the naked eye.
If you're interested in stargazing, I recommend downloading a stargazing app to help you identify planets and other celestial objects. Happy stargazing!
