The worst places to visit
A deadpan travel advisory for the most hostile worlds in the catalog. Every entry is a single, honest superlative computed from real data: no shade, no liquid water, and in most cases no way to survive the first second. Prefer somewhere survivable? See the best places to visit.
- Hottest★☆☆☆☆KELT-9 b3777°C (6830°F)
Daytime hot enough to vaporize rock and metal. No surface, no shade, no return.
- Coldest★☆☆☆☆WISPIT 2 b-240°C (-399°F)
Colder than almost anywhere in the solar system, cold enough to freeze gases solid.
- Most crushing gravity★☆☆☆☆Kepler-37 e≥ 59.2x Earth gravity
Surface gravity so strong that standing, let alone walking, would be a struggle.
- Most blinding star★☆☆☆☆KELT-9 b44,900x Earth's sunlight
Drenched in many times the sunlight Earth receives, a scorching, sterilizing glare.
- Shortest year★☆☆☆☆ZTF J1828+2308 b2.7 hours
Whipping around its star in a matter of hours, roasted by the closeness.
- Longest year★☆☆☆☆COCONUTS-2 b1,100,616 years
So far from its star that a single orbit can outlast a human lifetime.
- Least Earth-like★☆☆☆☆GJ 900 bESI 0.00
By our Earth-similarity index, almost nothing about this world resembles home.
Each ranking is one category computed from a measured or derived value. We do not combine them into a single "deadliest" score: with atmosphere, wind, and radiation unknown for most worlds, any such score would be guesswork.