The universe is constantly being created—and destroyed. Discover how these processes work, and how they may hold clues to how the universe began.
More About the Universe
Details of the big bang are obscured by billions of years of cosmic history. But high-tech orbiting telescopes are lifting the veil on our universe's formative years.
Supernovae occur when large stars collapse, ejecting plumes of gas, dust, and energy. Scientists study the remnants of these blasts for clues about the life and death of stars.
Humans have studied nebulae for centuries. But space-based and infrared telescopes that can cut through the dust are casting these cosmic cloud formations in a whole new light.
Space-based telescopes have revealed the complex and beautiful details of thousands of our universe's far-flung galaxies.
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Volunteers risk their lives to vaccinate children in Islamic State-controlled territory in Syria. Video.