NASA Office of Space Science
Science Facts Written by NASA Office of Space Science
The Minor Planets
Asteroids are rocky fragments left over from the formation of the solar system about 4.6 billion years ago. Most of these fragments of ancient space rubble - sometimes referred to by scientists as ... Continue reading
Voyager Phone Home
After historic visits to Jupiter and Saturn, Voyager 1 is now on course to be the first human-made object to leave our solar system. In space for more than 25 years, it has already traveled farther ... Continue reading
How Much Water in an Inch of Snow?
If the snowfall amounts were translated into equivalent volumes of water - then how much water would that be? Using a rule of thumb that each 10 inches of snow, if melted, would produce one inch of ... Continue reading