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The Question
(Submitted June 09, 1997)
Can you describe two or more aspects of the solar system that are not common
knowledge?
The Answer
Depending on how you define 'commonly known' there are a lot
of interesting things about the solar system that fit into this
category. Did you know, for example, that the rotation of the
planet Mars has been found to be chaotic over the lifetime of
the Solar System? What about the fact that the tidal interaction
between the Earth and the Moon is causing the Moon to slowly spiral
farther away from Earth? Long ago, the Moon was much closer to the
Earth, and looked larger in the sky. Did you know that the Sun
contains 98% of the entire mass of the Solar System? Did you know
that the planet Jupiter's atmosphere contains a Great Red Spot:
a storm system that has remained remarkably stable since the first
astronomers observed it with a telescope in the early 17th century?
Regards,
Padi Boyd and Jeff Silvis
for the Ask a High-Energy Astronomer Team
Questions on this topic are no longer responded to by the "Ask a
High-Energy Astronomer" service. See http://imagine.gsfc.nasa.gov/docs/ask_astro/ask_an_astronomer.html
for help on other astronomy Q&A services.
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