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Documents How Far is far ? Measuring the size of the Universe.

Slide 1 How Far is far ? Measuring the size of the Universe. Slide 2 The easiest way to measure the distance to a planet or star is through a method called parallax. The…

Documents Twinkle, twinkle, little star, how I wonder what your Hertzsprung- Russell diagram...

Slide 1 Twinkle, twinkle, little star, how I wonder what your Hertzsprung- Russell diagram classification….are. Slide 2  Stars are generally grouped into three colors:…

Documents The Sun and other stars. The physics of stars A star begins simply as a roughly spherical ball of...

The Sun and other stars The physics of stars A star begins simply as a roughly spherical ball of (mostly) hydrogen gas, responding only to gravity and itâs own pressure.…