Most people in the Parallel know of these things...

• “The Parallel” is just the widely-accepted way of referring to the Milky Way Galaxy.
• “Galactic Common” or simply Common, otherwise known as English, is the standard form of communication throughout the Parallel.

Currency:

Credits, known officially as Galactic Credits are the main form of currency used throughout the Parallel. It is an electronic currency that can be stored in plastic cards, but unlike credit cards or debit cards, the holder can be anonymous, and the cards be exchanged freely, though they’re often swiped for purchasing. Their value is not too different from the US Dollar.

Fictional Resources:

Cronium – named after the titan Cronus, Cronium is a valuable and dark metal known as the best balance of strength and weight in the galaxy, 10x stronger than Titanium and as light as leather, renown for its uncanny ability to absorb kinetic energy. It is found in Suldar and sold in small quantities to foreigners for high prices with the permission of the Suldari Dominion. The Suldari, however, do permit its purchase by its own citizens, though selling it without government permission is a crime punishable by death.

Acronium (Artificial Cronium) – an imperfect recreation of Cronium manufactured by Genesis in 2364, it is only half as strong and nowhere near as valuable, but found in greater quantities and used by most high-tier men-at-arms in the Parallel. It may not be Cronium, but it remains highly sought out.

Junium – a metal slightly stronger than Cronium, but slightly denser than Titanium. It’s often used for building materials, and most high-tier ships utilize Junium.

Plutite – a glowing blue crystal used to power most energy-based weapons. Alongside its superior, Cronite, Plutite is even used for expensive jewelry.

Cronite – a rare, glowing white crystal used to power engines on starships and many reactors. It’s nothing more than Plutite that’s been exposed to more pressure.