Kepler-444 – an ancient extrasolar system

Using NASA’s Kepler data, scientists discovered a solar system with Earth-sized planets dating back to the dawn of the Galaxy. Kepler-444 is a Sun-like star formed 11.2 billion years ago and it’s hosting 5 planets with sizes between Mercury and Venus. Credit: Tiago Campante/Peter Devine „An ancient extrasolar system with five sub-Earth-size planets” Campante et al., The Astrophysical Journal arXiv: