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Great explaining on how we measure distances to stars using parallax and distances to galaxies using Cepheid Variables stars.
The official site for NASA's Kepler mission, on a quest to find habitable exoplanets in our galaxy.
Leicester University's extensive guide to the solar system, the wider galaxy and space missions with lots of excellent photographs, illustrations and links
Cepheid Variables stars can tell astronomers how far away galaxies are.
How many galaxies are there in the universe? Nice infographic with some cool facts about our universe, the solar system and outer space.
Links and information on all aspects of cosmology including the Big Bang, Galaxies and Clusters, Cosmic Radiation and Cosmic Strings. All the information is supported with images and there are a ...
Read how Cepheid Variable stars can tell you distances to galaxies.
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