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One of the greatest challenges humanity faces is finding a way to provide the world's population with clean energy. Since sunlight is our most abundant source of energy, solar cells, which absorb sunlight and create electricity, will become increasingly important...

In this public lecture, longtime SLAC physicist Greg Loew will present a trip through SLAC's origins, highlighting its scientific achievements, and provide a glimpse of the lab's future in "Big Machines and Big Science: 80 Years of Accelerators at Stanford."

Black holes do not spend their lives alone in empty space. It is now known that at the center of almost every galaxy there is an enormous black hole, with a mass billions of times the mass of the sun...

Some 150 million years ago, a strange creature died in a tropical lagoon that today is located in Bavaria, Germany. In 1861, a single feather of this creature was discovered. Not long afterward, a complete fossil was found with the...

Astronomers infer that the universe contains huge amounts of a mysterious, invisible substance called "dark matter". To account for the structure of galaxies and clusters of galaxies, the universe must contain six times more dark matter than ordinary atomic matter...

At a first glance, our galaxy appears to be made of stars separated by vast and empty space.  However, we now know that this space is filled with things that are more difficult to see – gas, photons and the...

What was the first thing in the Universe? A black hole or a star? How did it form? Even our biggest and best telescopes cannot tell us. Direct calculation with supercomputers, however, can. The first luminous objects in the Universe...