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3 votes

Planets Named After Roman Gods, Except Earth

There are two primary reasons why the planets were named after Roman Gods. Language - the early astronomers in Europe wrote in Latin, and Latin was the language of the Roman Empire. So they ended up ...
Nilay Ghosh's user avatar
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29 votes

Why did the dust between the planets disappear during the birth of the solar system?

Dust happens in two ways. "Primordial dust" just condenses out of the protostellar material in the disc providing it gets cool enough and dense enough. "Second generation" dust is ...
ProfRob's user avatar
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2 votes

Where can I get historical data of tropical longitude of Delta Cancri

Any Planetarium software that simulates precession will tell you this. If you know what to ask it. Delta cancri has a Right ascension of 8hr 45min (or about 131 degrees). It has an ecliptic longitude ...
James K's user avatar
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9 votes

How did the temperature of the solar system evolve?

There is no "nuclear flash". The approach to a stable, hydrogen-burning star is rather smooth and in fact the Sun was more luminous during its first few million years as a protostar than it ...
ProfRob's user avatar
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-3 votes

What was the definition of a planet before August 24, 2006?

( Quotes from Moons are planets: Scientific usefulness versus cultural teleology in the taxonomy of planetary science ) No single definition of planet existed. Messeri (2010) argued that the polysemy ...
David McKee's user avatar

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