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[[category:Solar System]] ...planet-sized object crashed into Venus early in the evolution of the Solar System, reversing its direction of rotation. Such giant impacts are expected to be

'''Question: How many planets have been found outside of the solar system?'''

For over a century, astronomers have used a system of stellar classification that described most stars as one of seven types d ...of water ice. If confirmed, it will be the first object outside the solar system known to have water clouds.

[[category:Solar System]]

* [[:category:Solar System|Solar System]]

...ar mass (2 x 10³³ g) of gas turns into stars per year, and that Solar mass is typically distributed among red dwarf stars, which we think are sui ...can exist. A gas giant that moves through the inner part of the planetary system can eject any rocky planets already there. Unfortunately, the Kepler missio

...the earth. In a few years, we would need a telescope bigger than our solar system.