A century of astronomy revealed Earth's place in the universe
A brief history of astronomy
Galaxy Hunters Article, Cosmology Information, First Star Facts
The Extravagant Universe: Exploding Stars, Dark Energy, and the
2.6 The Birth of Modern Astronomy – Copernicus and Galileo – Astronomy
Astronomers See Evidence of Something Unexpected in the Universe
A century of astronomy revealed Earth's place in the universe
Where Is the Center of the Universe
The Milky Way: Understanding Our Place in the Galaxy
Earth has two extra, hidden 'moons
The 5 Biggest Questions About the Universe (and How We're Trying