Explore the universe
Spacedle is a reference catalogue of real astronomical objects, each scored from its own science. Browse by what an object is, or by how rare it ranks.
By type
Exoplanets
Real worlds orbiting other stars, from scorching hot Jupiters to rocky super-Earths.
Stars
Suns near and far, sorted by brightness, colour and spectral class.
Comets
Icy visitors on long, looping orbits that grow tails as they near the Sun.
Asteroids
Rocky and metallic bodies, most of them circling between Mars and Jupiter.
Near-Earth objects
Asteroids and comets whose orbits carry them close to Earth.
Dwarf planets
Round worlds too small to clear their orbits, like Pluto and Ceres.
Kuiper Belt objects
Frozen bodies drifting in the Kuiper Belt beyond Neptune.
Pulsars
Spinning neutron stars that sweep beams of radiation past Earth.
Nebulae
Vast clouds of gas and dust where stars are born and where they die.
Star clusters
Gravitationally bound families of stars, from open groups to globular swarms.
Galaxies
Island universes of billions of stars far beyond the Milky Way.
Variable stars
Stars whose brightness rises and falls over hours, days or years.
Planets
The eight worlds of our own solar system, from scorched Mercury to storm-banded Neptune.
Moons
Natural satellites — ice-cracked Europa, volcanic Io, hazy Titan and our own Moon.
Black holes
Regions where gravity wins outright, from stellar-mass collapsars to the supermassive giants anchoring galaxies.
By rarity
The most common finds — every collection starts here.
Everyday objects that make up the bulk of the night sky.
A cut above, with a little extra science behind them.
Genuinely notable bodies that earn several science badges.
Standout objects with remarkable, headline-grade properties.
Strange, record-breaking outliers that defy the norm.
The rarest objects in the catalogue — the crown jewels of a dex.