MARSEILLE: The Olympic Flame arrives in Marseille, France, aboard Belem, a three-masted sailing ship coming from Greece, on Wednesday, May 8. The Summer Games are being held in Paris this summer (Benoit Tessier/Reuters)

SPACE: This image, captured by the Dark Energy Camera and released on Monday, May 6, shows "God's Hand," a cometary globule 1,300 light-years from Earth in the Puppis constellation. It's a rarely seen cosmic phenomenon, according to astronomers (CTIO/NOIRLab/DOE/NSF/AURA)

LOUISVILLE: Mystik Dan, with jockey Brian Hernandez Jr., edges out Sierra Leone and Forever Young in a rare three-horse photo finish at the Kentucky Derby on Saturday, May 4. It was the 150th running of the race (Jabin Botsford/The Washington Post/Getty Images)

ISTANBUL: An employee at Plant Factory checks the growth of greens cultivated in a vertical farming system in Istanbul on Wednesday, May 8. Plant Factory is Turkey's first commercial vertical farm (Chris McGrath/Getty Images)

BARNSDALL: The Crowder family surveys what's left of their home Tuesday, May 7, after a tornado in Barnsdall, Oklahoma (Brandon Bell/Getty Images)

CANOAS: A man is rescued by military firefighters after flooding in Canoas, Brazil, on Saturday, May 4. At least 95 people have died in the heavy rainfall and floods that have torn through the state of Rio Grande do Sul, where storms have affected more than 1 million people in 385 municipalities, according to the civil defense (Renan Mattos/Reuters)

SAN FRANCISCO: Sea lions sunbathe on a raft along Pier 39 in San Francisco on Saturday, May 4 (Godofredo A. Vásquez/AP)

NEW YORK: Performers wear gold and black at the Met Gala in New York on Monday, May 6. See the best looks from the night (Landon Nordeman/The New York Times/Redux)

MOLEPOLOLE: Members of the Zion Christian Church choir sing in Molepolole, Botswana, during a funeral ceremony held Saturday, May 4, for dozens of people who died in a South African bus accident in March.Monirul (Bhuiyan/AFP/Getty Images)

MOSCOW: Vladimir Putin walks to take his oath as Russian president during an inauguration ceremony in Moscow on Tuesday, May 7. Putin won Russia's stage-managed election by an overwhelming majority in March, securing for himself another six-year term that could see him rule until at least his 77th birthday (Alexander Zemlianichenko/Pool/AP)