Questions tagged [planetary-science]

The study of planets, asteroids, comets, etc, including weather, geology, composition, etc. This tag should be used when the focus of the question is on the the science of a non-Earth non-star natural object, and not used when designing spacecraft to cope with said challenges.

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What caused Cydonia mesas, such as “The Face on Mars”, to be created?

The Cydonia region of Mars is littered with mesas, which are an unusual geographic feature on Mars. A sample of a few of these, including the commonly known as "The Face on Mars", is shown below. How ...
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How hard is the Lunar surface?

The lunar surface visible to us is mostly regolith - space dust, asteroid remains, and what-not. The true lunar surface is below - at depths ranging from a few inches to a few metres. Given that ...
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What is the cause of Saturn's north pole persistent hexagon jet streams?

According to the article on the Cassini Solstice Mission website dating back to December 9, 2009: The six-sided shape remains a mystery. Scientists think the hexagon is a meandering jet stream at ...
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Can you have a rainbow on any bodies in the solar system besides Earth?

We know from Flying on dense atmosphere planets & moons that many bodies in our solar system have sufficient atmosphere for at least the concept of flying to be considered. What about the ...
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1answer
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Did the Viking landers detect life on Mars?

The two Viking landers had an experiment on board where they attempted to find life on the planet. The initial results said yes, there was life, but later there were questions raised about the results....

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