A Halloween dog parade in New York City.
TIMOTHY A. CLARY/AFP via Getty Images
NASA's Desert Research and Technology Studies team members practice for future missions near Flagstaff, Arizona.
OLIVIER TOURON/AFP via Getty Images
A motorcyclist races in Sepang, Malaysia.
MOHD RASFAN/AFP via Getty Images
Murals are seen on top of a market in Mexico City.
Trees near Schierke, Germany.
AP Photo/Matthias Schrader
A girl sleeps while covered with sand during a solar eclipse in Karachi, Pakistan.
ASIF HASSAN/AFP via Getty Images
A construction site during a solar eclipse in Gurgaon, India.
VINAY GUPTA/AFP via Getty Images
A child looks at a giant papier-mache jack o' lantern in Valletta, Malta.
REUTERS/Darrin Zammit Lupi
10 Downing Street in London.
AP Photo/Alastair Grant
Runners cross a bridge in Washington, D.C.
A damaged power line in Kharkiv, Ukraine.
Soccer fans hold their scarves aloft inside a Berlin stadium.