nine planet
This website is an overview of the history, mythology, and current scientific
knowledge of the planets, moons and other objects in our solar system. Each page
has our text and NASA's images, some have sounds and movies, most provide
references to additional related information. In association with our friends at
Solar System Scope we now have an interactive
tour of the solar system
(takes a while to load and opens in a new window)
All eight planets can be seen with a small telescope; or binoculars.
And large observatories continue to provide much useful information.
But the possibility of getting up close with
interplanetary spacecraft has revolutionized planetary science.
Very little of this site would have been possible without the space program.
Nevertheless, there's a lot that
you can see
with very modest equipment
or even with just your own eyes.
Past generations of people
found beauty and a sense of wonder contemplating the night sky.
Today's scientific knowledge further enhances and deepens
that experience. And you can share in it by simply going out in the evening
and looking up.
The IAU has changed the definition of "planet" so that Pluto
no longer qualifies. There are now officially only eight planets in
our solar system. Of course this change in terminology does not affect
what's actually out there. In the end, it's not very important how we
classify the various objects in our solar system. What is important is
to learn about their physical nature and their histories.
Read more about by nineplanets.org
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