Debbie Reynolds and her daughter, Carrie Fisher, at the Primetime Creative Arts Emmy Awards in 2011 in Los Angeles. Reynolds' death, just one day after her daughter's, has led many to ask whether it's really possible to die of a broken heart. Chris Pizzello/AP hide caption
Astronomers searching for an undiscovered planet in the outer solar system hope to catch a glimpse of it Thursday through the Subaru Telescope located on top of Hawaii's Mauna Kea mountain. Courtesy of the National Astronomical Observatory of Japan hide caption
Vera Rubin works at the Lowell Observatory in Flagstaff, Ariz., in 1965. Carnegie Institution hide caption
George Michael performs a charity concert for Sidaction, an AIDS nonprofit, at the Palais Garnier opera house in Paris in 2012. Eddy LeMaistre/Corbis via Getty Images hide caption
A screen grab from a video posted by Jacqueline Craig's niece shows an officer holding Craig on the ground while issuing commands. Police arrested Craig after she called to report a man had grabbed her son and accused him of littering. Porsha Craver/Facebook hide caption
The marmalade hoverfly might not be the flashiest bug under the sun, but researchers say it "does some very important jobs." Clifton Beard/Flickr hide caption
Police across Europe are on the lookout for Berlin terrorism suspect Anis Amri, seen here in an undated picture provided by Najoua Amri on Thursday. AP hide caption
The Wikipedia entry for the TV show RuPaul's Drag Race is among the site's most edited this year. Katja Ogrin/Redferns/Getty Images hide caption
Brazilian Federal Judge Sergio Moro (right) is leading his country's corruption probe of state-run oil company Petrobras. Two Brazilian companies have agreed to more than $3.5 billion in fines for violating U.S. bribery laws in their dealings with Petrobras. Eraldo Peres/AP hide caption
Walruses rest on the shores of the Chukchi Sea, the vast majority of which was designated off-limits to drilling on Tuesday. Ryan Kingsbery/AP hide caption
Darnell Earley, former emergency manager of Flint, Mich., at a House Oversight and Government Reform Committee hearing in March. Mark Wilson/Getty Images hide caption
A tiny radio receiver built from components the size of two atoms. It emits a signal as red light, which is then converted into an electrical current and can be broadcast as sound by a speaker or headphone. Eliza Grinnell/Harvard School of Engineering and Applied Sciences hide caption
Jeffery Hangst's ALPHA research at CERN, which is Europe's premier particle physics laboratory and is located near Geneva, is devoted to studying antimatter. CERN hide caption