Cosmic records

gravityfinder answers 38 records from measured data: the hottest, coldest, densest and closest worlds we know, the strongest and gentlest gravity, the biggest sun in any sky, the extremes of the stars these planets orbit, and the record holders among black holes and galaxies.

Each record is one honest superlative: a record holder, the number behind it, the top 25, and how we know. For the guided tours, see the worst places to visit and the best.

Worlds

Size, mass, temperature: the extremes of the planets themselves.

Orbits

How far out, how fast around, how lopsided the path.

What it would feel like

Gravity, weight, and the size of the sun overhead.

Discovery

Who was first, which year found the most, and how.

Host stars

The stars these worlds orbit, at their extremes.

Black holes and galaxies

The record holders beyond the planetary catalog.

Each record is one category computed from a measured or derived value, with disputed rows and physically impossible values excluded. Where a measurement is weak, the page says so in its first sentence rather than in a footnote. We do not crown records we cannot vouch for: there is no most massive galaxy here, because no mass is measured for the galaxies in this catalog.