In order for you to play Starbound on Linux with minimal graphics settings, your computer must meet the following requirements
Operating System:
Debian Stable or Ubuntu 12.04 LTS or later
Processor (CPU):
Core 2 Duo
Memory (RAM):
2 GB RAM
Graphics Card:
256 MB graphics memory and opengl 2.1 compatible gpu
Network:
Broadband Internet connection
Storage:
3 GB available space
In order to play Starbound on Linux with maximum graphics settings, you need a computer with a configuration no worse than the following
Operating System:
Debian Stable or Ubuntu 12.04 LTS or later
Processor (CPU):
Core i3
Memory (RAM):
4 GB RAM
Graphics Card:
256 MB graphics memory and opengl 2.1 compatible discrete gpu
Network:
Broadband Internet connection
Storage:
4 GB available space