Солнце. Тчк.
https://ru.wikipedia.org/wiki/%D0%98%D1%81%D1%82%D0%BE%D1%80%D0%B8%D1%8F_%D0%92%D0%B8%D0%B7%D0%B0%D0%BD%D1%82%D0%B8%D1%8F