Gas Giants
The Universe's Most Intense Worlds
Gas giants are massive worlds made mostly of hydrogen and helium, like Jupiter and Saturn in our Solar System. But the ones orbiting other stars can be wildly different—some scorch close to their stars, others drift alone in the void. These extreme planets teach us how massive worlds form, migrate, and survive (or get destroyed) in alien systems.
From puffy balloons inflated by heat to rogue worlds with no sun, they’re the most dramatic exoplanets we’ve found so far.
- Much larger than Earth—10–20× Earth radius common
- Extreme temperatures: some hotter than lava, others frozen
- Wild weather: winds up to 5,000 mph, glass rain, iron clouds
- Many are “puffy” from heat—lower density than cork
- Some are rogue planets—wandering without a star
- First exoplanets ever discovered were Hot Jupiters
Gas Giant Codex
Size:
12.6 × Earth
Distance from Earth:
1099 light-years
Habitable Zone:
No
Star Type:
K-type
Fun Fact:
Picture a super-sized Jupiter cousin zooming around its star in just two days—like the fastest merry-go-round in space!
Size:
11.1 × Earth
Distance from Earth:
663 light-years
Habitable Zone:
No
Star Type:
M-type
Fun Fact:
This giant gas ball whips around its tiny star every 2.5 days—faster than a kid can finish a roller-coaster ride!
Size:
12.3 × Earth
Distance from Earth:
128 light-years
Habitable Zone:
No
Star Type:
K-type
Fun Fact:
This massive gas giant circles its star every 15 years, a distant sentinel in a wide, stable orbit!
Size:
9.0 × Earth
Distance from Earth:
578 light-years
Habitable Zone:
No
Star Type:
Unknown
Fun Fact:
This ultra-light “super-puff” is so fluffy it defies gravity, like a cosmic cotton candy ball!
Size:
2.0 × Earth
Distance from Earth:
115 light-years
Habitable Zone:
Yes
Star Type:
M-type
Fun Fact:
This mini-Neptune sits near the inner edge of its star’s habitable zone, potentially with a thick atmosphere trapping warmth!
Size:
18.5 × Earth
Distance from Earth:
63 light-years
Habitable Zone:
No
Star Type:
A-type
Fun Fact:
This young gas giant was directly imaged orbiting in a dusty debris disk, like a newborn world in formation!