Interstellar Cloud of Gas is a Natural Lens - Universe Today
Dr. Hayley Bignall, an astronomer from the Joint Institute for Very Long Baseline Interferometry in Europe (JIVE), believes that interstellar clouds of gas and dust can serve as a natural lens to magnify distant objects better than any human-built telescope. Every galaxy, including our own Milky Way has a cloud of particles around it, which naturally clump together by gravity. Radiation from a distant object passing through these clouds (light, radio waves, etc) can be focused to reveal details.