b'Headline for Essay Pages Set LatoAwsternotnyo Smeyven on Twenty SevenTS vestigating atthe Bo Semibold Iirth, Structurtalice, and Fate of the UniverseInubhead in L16 This artists concept shows the explosive collision of two neutron stars. Image courtesy Robin Dienel, Carnegie Institution for Science . . . thefirst to discoveroptical light produced by aneutron star merger .Discovering the First Lightwith Gravitational WavesA team led by Carnegies Anthony Piro, Josh Simon, and postdoctoral fellows Maria Drout and Benjamin Shappee, with colleagues at U.C.-Santa Cruz, were the first to discover optical light produced by a neutron star merger. Studying the same event withThis is an artists concept of gravitational waves, ripples in space-both gravitational waves and light ushers in a new eratime, caused by binary neutron stars. Albert Einstein predicted that in astronomy of investigating the universe with twogravitational waves existed as part of his general theory of relativity a century ago. Only recently have scientists detect any. completely different probes. This event additionallyImage courtesy R. Hurt/Caltech-Jet Propulsion Laboratoryexplains the origin of the universes heaviest elements, solving a decades-old mystery. The group used the Swope telescope at Carnegies Las Campanas Observatory less than 11 hours The Laser Interferometer Gravitational-Waveafter the LIGO alert. Their discovery, named Swope Observatory (LIGO) alerted the Carnegie scientistsSupernova Survey 2017a (or SSS17a), was the first, to the neutron star merger on August 17, 2017.despite many large teams across the world feverishly Neutron stars are the dense remnants of massivecompeting to find the elusive event.stars after they die as supernovae. LIGO had previously detected gravitational waves, ripples inSimon and Shappee quickly took additional space-time, from merging black holes, earning themobservations using spectrographs at the the 2017 Nobel Prize in Physics. However, blackobservatorys twin Magellan telescopes. Spectra hole mergers do not emit light and are thereforeseparate light into its component wavelengths, telling invisible to telescopes. Neutron stars have long beenastronomers the speed, chemistry, and temperature expected to produce both light and gravitationalof the merger material. No other group made waves when merging, so their detection had beencomparable observations that first night. Piro, with eagerly anticipated. Carnegies Juna Kollmeier, performed theoretical work to show the early emission was produced by a shock ripping through the merger debris as the'