Dwarves

They're who you bring in when you want supplies. Dwarves are accomplished miners and can take a planet and hollow it in a decade, strip a gas giant of its resources in a year, a blink in the 400 year life spans of the stout race.

Dwarves sport beards as signs of prowess, being well groomed and presented is a show of one's prestige, yet as other races may note, this cleanliness doesn't always extend to other areas of their lives, pointed out best by the fact that Dwarven doesn't have a word for manners.

Slow to trust others when gold isn't involved, they have a long and sordid history outside of mining planets, their home once consisted of seven kingdoms that, when presented with spaceflight, fought bloodily until three remained to form the council of kings.

Changes from the PHB

 * Tool Proficiency. Alongside smith’s tools, brewer’s supplies, or mason’s tools, you also have the choice of Tinkerer's tools.
 * Stonecunning. Due to having a long history of varied craftspeople, your knowledge also extends to heavy machinery, you may make an Intelligence (History) check with double your proficiency bonus when identifying the controls or parts of construction and mining technology.

Shipborn Subrace
Born far away from home, it's easy to tell the difference between a Shipborn and a terrestrial Dwarf. Paler skin, lighter hair and a weaker immune system what they lack in body they make up for in knowledge.
 * Ability Score Increase. Your Intelligence score increases by 1.
 * Dwarven Rifle Training. You have proficiency with complex ranged weapons.