• dwarf planets
-- Ceres, Pluto, Eris, Makemake, Haumea, Charon, Dysnomia
6723

○○○ errant ⪢⪢
They called these errant objects planets, a word that means wandering stars.
15555

○○○ look up ⪢⪢
Thousands of years ago, ancient astronomers looked up at the sky.
14660

○○○ think ⪢⪢
Some of the things they thought were stars were moving in ways they didn't expect.
15563

Pillow English Listening