Astronomy

Celsius, Anders

Swedish astronomer

Queloz, Didier

Biography, Discoveries, & Facts

Crippen, Robert

Biography, Missions, & Facts

Ariane

European launch vehicles

Pickering, William Henry

American astronomer

Jähn, Sigmund

East German cosmonaut

Hydrogen Cloud

astronomy

Comet

Composition, & Facts

Kubasov, Valery

Russian cosmonaut

Jodrell Bank Observatory

research station, Cheshire, England

Aphrodite Terra

Venusian surface feature

Minggantu

Chinese astronomer and mathematician

Ockels, Wubbo

Biography, Spaceflight, & Facts

Hill, George William

American astronomer

Dark Energy

Discoverers, & Facts