Gas supergiant

Size: 140000 km - 10000000 km
Atmosphere composition: Hydrogen

Usually found in a star's outer or cold zone, although a class of supergiants is known to circle their parent stars in very close orbits. They have high core temperatures causing them to radiate heat. Low stellar radiation and high planet gravity enables them to keep a tenuous surface comprised of gaseous hydrogen and hydrogen compounds. The atmosphere is highly turbulent with wind speeds in excess of 10000 kilometers per hour. Great for wilderness refueling if you use hydrogen to get around.