That’s not quite true - Perseverance has tubes for every tube (10) it left behind. The tubes left behind are the backups in case something happened to Perseverance- the main tubes are on board and can be collected all at once when from the rover.
That’s not quite true - Perseverance has tubes for every tube (10) it left behind. The tubes left behind are the backups in case something happened to Perseverance- the main tubes are on board and can be collected all at once when from the rover.
The point is that they’d have to be picked up and retrieved at all, even from Perseverance.
That alone is a separate multibillion dollar program just to do that.