![]() ![]() ![]() The difference in angle of a star on the perpendicular to the plane of the Earth's orbit which passes through the Sun when viewed from either side of the Earth's orbit is 0.1°. Conversion chart - parsecs to astronomical units Category: main menu length menu Parsecs. An astronomical unit (abbreviated as AU, au, a.u., or ua) is a unit of length equal to about 149,597,870.7 kilometres (92,955,807.3 mi)1 or approximately the. A light year is the distance that light travels in one year. ![]()
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