Here's why:
* Planet positions change: Planets move across the sky over time, so what's visible in the south one night might be in a different location a few weeks later.
* Different planets are visible: Depending on the time of year, you might be seeing Venus, Jupiter, Mars, or even Saturn.
To find out what planet you're seeing, I need you to tell me:
* The date: What day are you looking at the sky?
* The time: What time of night or day are you looking up?
Once you give me those details, I can use an astronomy website or app to tell you what planet you're seeing!