At the heart of our sun, fusion is unfolding. As hydrogen atoms merge to form helium, they emit energy, producing the heat ...

For a long time, the Greenwald limit was accepted as a given and incorporated into fusion reactor engineering. The new work shows that precise control over how the plasma is created and interacts with ...

A wobbling jet from a giant, voracious black hole is suppressing star formation in a distant galaxy—and astronomers have ...