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Tag: Parallax

Surveying the Stars

It is an enormous step to go from the planets to the stars. For example, our Voyager 1 probe, which was launched in 1977, has now traveled farther from Earth than any other spacecraft. As this is written in 2016, Voyager 1 is 134 AU from the Sun.1 The nearest star, however, is hundreds of thousands…
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Stars and Stellar Distances

Ancient Greek Astronomers believed the stars were burning objects. Today, we know that stars are composed of very hot gases. Stars produce energy by nuclear fusion. If you observe the sky on a clear night, you can see as many as 2000 stars. Some stars in the night sky are brighter than others. However, the…
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