He maintained his own private observatory and discovered three comets.

The automatic telescopes discovered two new comets in 2004 and 2006.

He went on to become a significant figure in astronomy, and later discovered many comets during his observations.

He discovered two more comets in 1963 and 1965.

After taking her brother's advice to understand astronomy, she discovered more than half a dozen comets in the 1780s and 1790s.

He has discovered 22 comets, nine of them using his own backyard telescopes.

Learn about the long but rewarding process of discovering and analyzing comets.

While making her own observations, she discovered several comets and nebulae.

From 2 December 1839 to 6 March 1840 he discovered three new comets.

His research group discovered 7 comets and 807 asteroids.