May 6, 2015

Sheikh Mohammed bin Rashid al-Maktoum, Prime Minister of the United Arab Emirates (UAE) and ruler of Dubai (C) takes part in a ceremony to unveil UAE's Mars Mission in Dubai.

Boys sit in a tree under a partly cloudy sky in an open field in Karachi, Pakistan.

People walk through the garden of Changgyeonggung Palace in Seoul.

A boy jumps into the Ganges river to cool himself off on a hot summer day in Kolkata, India. Temperature in Kolkata is expected to reach 37 degrees Celsius (98.6 degrees Fahrenheit).

A couple uses a smartphone as they wait for the start of a shadow play performance at Changgyeonggung Palace in Seoul.

A man drives the "Iris viseo", an electric surveillance vehicle with a telescopic cockpit designed and manufactured in France at the car park of a shopping center in Noyelles-Godault.

A Buddhist monk catches an aerial view of Kathmandu from the damaged Swayambhunath Stupa premises in Kathmandu, Nepal.

The buildings of the banking district are seen through thousands of rain drops on a glass railing in central Frankfurt, Germany.

A view of the Great Falls of the Potomac River on the Virginia side of the river, about 25 km upstream from Washington, D.C. (photo by Diaa Bekheet)

The unmanned SpaceX Crew Dragon lifts off from launch pad 40 during a Pad Abort Test at the Cape Canaveral Air Force Station in Cape Canaveral, Florida.

This celestial object called IRAS 14348-1447 is actually a combination of two gas-rich spiral galaxies. It is located over a billion light-years away from us. It is one of the most gas-rich examples known of an ultraluminous infrared galaxy, a class of cosmic objects that shine characteristically — and incredibly — brightly in the infrared part of the spectrum. The image was taken by Hubble’s Advanced Camera for Surveys.

Kaydann Marshall runs through a park fountain in Cincinnati, Ohio, USA.

View of the Villarrica volcano, one of Chile's most active, picture taken from Pucon, some 800 km south of Santiago.