Krynnspace

Of all the Known Spheres, Krynnspace is considered the most primitive and pristine by spelljamming travelers. At roughly 8,000 million miles in diameter, Krynnspace is considerably larger than Realmspace, and is also notably colder than other known spheres and as such is plagued by small lethal clouds of freezing vapor.
Krynnspace is a heliocentric system, with the system primary, a fire body known as the Sun, lying at the center of the sphere and orbited by 6 planets and an asteroid cluster. Most of the planets are named for the deities of Krynnspace, as are the constellations.
The main bodies of the system are Sirrion, Reorx, Krynn, Chislev, Zivilyn, Nehzymth, and the Stellar Islands.
To quote Captain Ingemarsen of the hammership Vatun’s Axe, “the residents of Krynnspace have let an aspect of Tiamat into the world after the War of the Lance. She goes by the name of Takhisis in that crystal sphere and good aligned forces there have banded together and are currently fighting what they call the War of Souls to banish her from the Prime Material plane. If you are in a heavily armed ship, you might be able to trade in magical weapons, but dragons are everywhere there as well.”