system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What makes landing on Mars different from the moon landing?
gpt
First of all, Mars is a LOT farther than the Moon (like Johannesburg is farther than the local grocery store).

Then, Mars has higher gravity, so everything gets pulled down about twice as hard compared to the moon.

Finally, Mars has an atmosphere. It's very thin, but still significant. It has quite an effect on anything flying through it at any speed - and a lander coming from Mars' orbit (or beyond) has a LOT of speed.