Add Yahoo as a preferred source to see more of our stories on Google. In a discovery that challenges conventional optics, scientists have managed to make a laser beam cast its own shadow—a feat ...

Scientists may have discovered how to create a real-life tractor beam using electromagnetic radiation that can draw particles toward it. The result is something very akin to the tractor beam seen in ...

This animation shows how a hypothetical future mission might eventually employ ‘tractor beam’ technology. (Credit: NASA’s Goddard Space Flight Center, Conceptual Image Lab) Tractor beams — the ability ...