Learn About Cosmology

Cosmology: The study of the origin and evolution of the universe as a whole.

Most of the Universe is dark. The protons, neutrons and electrons that make up the stars, planets and us represent only a small fraction of the mass and energy of the Universe. The rest is dark and mysterious. X-rays can help reveal the secrets of this darkness. X-ray astrophysics is crucial to our understanding not only of the Universe we see, but the quest to determine the physics of everything. More >

The video with closed-captions (at YouTube)

Cosmology Blog
fiery star outburst in outer space
A Serendipitous Discovery May Provide Our First View of a New Population of X-ray Transients
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