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Planets

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How Do We Keep Our Space Probes From Contaminating Other Planets?

Question:  What are the chances of interplanetary space crafts, probes  and rovers carrying the air-borne bacteria and viruses and…

Why is the Earth’s Orbit Around the Sun Elliptical?

Question:  Why is the Earth’s revolution around the sun elliptical rather than a perfect circle? I feel like if…

The Earth-Moon Spin-Orbit Resonance

Question:  For being a chunk of Earth’s primordial matter the Moon is quite an amazing stellar feat…it orbits synchronously…

Radio Frequency Recordings from the Planets

Question: Hello I am an experimental musician from Houston Texas. I have been searching for radio frequency recordings of…

Solar Radiation Effects on Mars Astronauts

Question:  I have been watching a programme on the television about the preparations for a manned mission to Mars….

Why do the Planets in our Solar System Orbit the Sun Counter-Clockwise?

Question: The planets in our solar system are orbiting the Sun counter clockwise, why? Do the laws of physics…

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The National Radio Astronomy Observatory is a facility of the U.S. National Science Foundation operated under cooperative agreement by Associated Universities, Inc.
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