(Encyclopedia) albedoalbedoălbēˈdō [key], reflectivity of the surface of a planet, moon, asteroid, or other celestial body that does not shine by its own light. Albedo is measured as the fraction of…
Formation of the Solar System The Sun The Moon The Moon's Phases Some Facts about Eclipses Mercury Planet Mercury Video Venus Earth Mars Planet Mars Video and Activities Jupiter…
EXPLORING THE MOONFIRST SPACEMANFIRST MEN ON THE MOONMISSION CONTROLSPACE SHUTTLETO SPACE AND BACKFIND OUT MORELess than four years after the launch of the first satellite into space, Sputnik 1…
(Encyclopedia) month, in chronology, the conventional period of a lunation, i.e., passage of the moon through all its phases. It is usually computed at approximately 29 or 30 days. For the…
(Encyclopedia) EnceladusEnceladusĕnsĕlˈədəs [key], in astronomy, one of the named moons, or natural satellites, of Saturn. Also known as Saturn II (or S2), Enceladus is 310 mi (500 km) in diameter,…
WARNING!LOOPS IN THE ATMOSPHERESPOTS ON THE SUNNEUTRINOS FROM THE SUNSPACE WEATHERSOLAR ECLIPSEFIND OUT MOREDominating our corner of space is a star we call the Sun. It travels through space…
Apollo Moon Mission display in the National Air and Space museum HOW DO HUMANS SURVIVE IN SPACE? HOW DOES SPACE TRAVEL AFFECT PEOPLE? WHAT IS THE FARTHEST ANYONE HAS TRAVELED…
