这是自四百多年前伽利略的第一台望远镜以来，天文学领域最大的进步。

This is the biggest step forward in ___astronomy since Galileo's first telescope over four hundred years ago.

她的父亲以其广博的天文学知识和在这个主题上所写的书籍而闻名。

Her father was famous for his vast knowledge of ___astronomy and books he wrote on this subject.

现代天文学依靠复杂的技术来解开宇宙的奥秘。

Modern ___astronomy relies on sophisticated technology to unravel the mysteries of the universe.