Tiago Campante/Peter Devine

Ars Technica - Kepler discovered a system of 11-billion-year-old planets

Five of them, all smaller than Earth, indicate planet formation started early.

John Timmer on the discovery of what maybe the oldest planets in the universe. Read more at Ars Technica

/ D. enigmata on the right, with the three larger samples on the left representing D. discoides.