17 июл 1609 г. - Galileo Galilei decides to use the telescope for astronomical purposes.
Описание:
Galileo Galilei makes his own refracting telescope and gets the brilliant idea of using it for astronomical purposes. This was also the year he published his very own book and mentions his new creation in it.Добавлено на ленту времени:
Дата:
17 июл 1609 г.
Сейчас
~ 416 г назад