“You need to live in a dome initially but over time you could terraform Mars to look like Earth and eventually walk around outside without anything on... So it's a fixer-upper of a planet.”

Simplified Meaning:

When you first move to a new place that isn't very comfortable, like Mars, you have to live in a special, protected space. Think about getting a rundown house; you can't live in it right away because it's not safe. You would first stay in a temporary shelter while fixing it up into a nice home. For Mars, this means living in domes with controlled environments. As you keep working on the place, making improvements bit by bit, it eventually becomes more like home. With Mars, that means changing the land and atmosphere over many years so people can live and breathe outside without special suits. This process is called terraforming. Essentially, Mars is like a big, long-term project that needs lots of effort to transform it into a place where people can live comfortably. It teaches us patience and hard work, showing that with consistent effort, you can change even the most difficult situations into something better.