CNN's best photo galleries this week

Updated 2253 GMT (0653 HKT) August 14, 2015
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A Herdwick sheep from the Lamb National team jumps a fence during the launch of the International Agility Festival on Thursday, August 13, at Rockingham Castle near Market Harborough, England. See more amazing images from "The week in 35 photos." Joe Giddens/PA Wire/ZUMA Press
From multiple selfies to snaps of his famous friends, the world of Andy Warhol has been artfully documented through the lens of his Polaroid camera. Whether it's relaxing in Venice with the likes of Yves Saint Laurent and Bianca Jagger, or quiet moments of the artist himself, each image shares a rare peek into Warhol's life as a creative. © The Andy Warhol Foundation for the Visual Arts, Inc.
A meteor streaks across the sky above Halle, Germany, early Thursday, August 13. The Perseid meteor shower occurs every August when the Earth passes through the debris and dust of the Comet Swift-Tuttle. HENDRIK SCHMIDT/DPA/AFP/Getty Images
Alfred Hitchcock, master of the psychological thriller, was one of Britain's greatest filmmakers. He was born August 13, 1899. Here, Hitchcock is on the set of 1963's "The Birds." The filmmaker wanted Grace Kelly for the lead role, but upon her retirement from acting, Tippi Hedren was chosen instead.
Television personality Kim Kardashian West poses with her husband, Kanye West, and presidential candidate Hillary Clinton. "I got my selfie!!! I really loved hearing her speak & hearing her goals for our country!" she wrote on Instagram on Thursday, August 6. See that and more in this week's selfie gallery. From Instagram
Italian photographer Valerio Vincenzo has spent the last eight years photographing the EU's internal boundaries: that's 26 countries and 16,500 kilometers of borders that can be freely crossed. Valerio Vincenzo
Nigerian photographer Ima Mfon posted an all-call to Facebook asking for participants of the same heritage living in America in an attempt to document what bonds them. The result is a set of striking portraits of people from varied walks of life with one thing in common: their
Nigerian identity.
Ima Mfon/Klompching Gallery
U.S. water polo players push head coach Adam Krikorian into the pool after they defeated the Netherlands in their women's water polo gold medal match during the Aquatics World Championships in Kazan, Russia, on Friday, August 7. See more amazing sports photos from this week. MICHAEL DALDER/Reuters/Landov
Ivor Prickett, a documentary photographer, has been following the mass exodus of Syrians who survived the destruction of their towns. His photos remind us of their humanity and show how they are adapting to their new lives. Ivor Prickett/UNHCR/Panos Pictures