Tag: telescopes

  • Nation & World

    ‘Seeing the unseeable’

    A years-long effort by dozens of researchers at the Harvard-Smithsonian Center for Astrophysics reveals the first-ever image of a supermassive black hole.

    9 minutes
    In the first picture of a black hole, it is outlined by emission from hot gas swirling around it under the influence of strong gravity near its event horizon.
  • Nation & World

    A thinner, flatter lens

    A new meta-lens works in the visible spectrum, seeing smaller than a wavelength of light. Because of this development, high-efficiency, ultra-flat, or planar, lenses could replace heavy, bulky ones in smart phones, cameras, and telescopes.

    5 minutes