Astronomy

Light Curve

astronomy

Heliometer

instrument

Ursa Minor

constellation

Schwabe, Samuel Heinrich

German astronomer

Laika

Background, Spaceflight, & Facts

Reichenbach, Georg Von

German instrument maker

Cerro Tololo Inter-American Observatory

observatory, Chile

Mathieu, Claude-Louis

French astronomer and mathematician

Oberon

astronomy

Forbush Effect

astronomy

D-lines

spectroscopy

Kirch, Maria

German astronomer

Bailly, Jean-Sylvain

Biography, Tennis Court Oath, Death, & Facts

Nicholson, Seth Barnes

American astronomer

Vostok

Soviet spacecraft series

Cygnus

Description & Facts