A Moment of Science
Nowadays everybody knows there are nine planets in our solar system, but that information was hard won.
How can scientist know so much about the sun's heliosheath without being able to go there?
Nowadays everybody knows there are nine planets in our solar system, but that information was hard won.
On last count, there were nine planets in our solar system: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto. Soon, however, we might need to add a tenth planet to the solar lineup. Learn more on this Moment of Science.
Ever wondered what makes up Saturn's rings? Find out on this Moment of Science.
Have astronomers discovered a new planet? Find out on this Moment of Science.
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