The collision of two neutron stars, seen in an artist's rendering, created both gravitational waves and gamma rays. Researchers used those signals to locate the event with optical telescopes.
Robin Dienel/Carnegie Institution for Science
Earl Maize (left), Cassini program manager at JPL, and Julie Webster, spacecraft operations team manager for the Cassini mission at Saturn, embrace after the Cassini spacecraft plunged into Saturn on Friday at precisely 7:55 a.m. ET.
NASA/Joel Kowsky/(NASA/Joel Kowsky)
Brady Helms, Wayne Kee and John Cosat keep an eye on Hurricane Irma from inside the emergency operations center at the Launch Control Center at NASA's Kennedy Space Center.