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NASA Office of Space Science

NASA Office of Space Science

Science Facts Written by NASA Office of Space Science

Astronomy

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

NEAR animation of Eros
Astronomy

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

Saturn Voyager Mission Artwork depicts the spacecraft's path on its journey to Saturn as it passes above the orbits of Mercury, Venus, Earth, Mars, and around Jupiter
Geology

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

Cat checks out the snow pack.