Groups & Clusters of Galaxies
Astronomy / Deep Space
Galaxy clusters are the largest gravitationally bound objects in the universe. They have three major components: (i) hundreds of galaxies containing stars, gas and dust; (ii) vast clouds of hot (30 - continue reading this fact
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The Big Bang Model
Astronomy / Cosmology
The Big Bang Model is a broadly accepted theory for the origin and evolution of our universe. It postulates that 12 to 14 billion years ago, the portion of the universe we can see today was only a few continue reading this fact
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X-ray Telescopes
Astronomy / Exploration
X-rays are a highly energetic form of light, not visible to human eyes. Light can take on many forms -- including radio waves, microwaves, infrared, visible, ultraviolet, X-ray and gamma radiation. Ve continue reading this fact
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