Chitral Astronomical Society

Chitral Astronomical Society

Skies over the Hindu Kush

Encyclopedia

Dwarf Planet

Eris

The discovery that demoted Pluto.

Slightly smaller than Pluto but more massive. Its discovery in 2005 forced the IAU to redefine 'planet'.

See also

Pluto

The icy heart of the Kuiper Belt.

Ceres

The largest object in the asteroid belt.

Haumea

An egg-shaped dwarf with a ring.

Makemake

An icy dwarf in the outer Kuiper Belt.

Sedna

A distant red world from the Solar System's edge.