The warped shape of the stellar disk of the Milky Way galaxy, determined by mapping the distribution of young stars called Cepheids with distances set out in light years, is seen over the Warsaw University Telescope at Las Campanas Observatory in Chile, in an artist's rendition released August 1, 2019.

People walk through rushing flood waters as they try to hold onto a rope to help them to cross the street following heavy monsoon rains outside the Moinuddin Chishti sufi shrine in Ajmer in the western Indian state of Rajasthan on August 1, 2019.

This aerial image shows fishing boats docked on the last day of the summer fishing moratorium, as they prepare to leave port in Lianyungang in eastern China's Jiangsu Province on July 31, 2019.

The sun goes down in Dresden, eastern Germany on July 26, 2019.

An Iranian man walks in Mellat Park in Tehran on July 29, 2019.

In this handout photograph taken and released by the National Disaster Response Force (NDRF) on July 27, 2019 NDRF personnel rescue passengers of the Mahalaxmi Express train stranded in a flooded area in-between Badlapur and Vangani following heavy monsoon rains, some 70 kms from Mumbai.

This picture shows Musashino Forest Sport Plaza, venue for the badminton and modern pentathlon competitions at the Tokyo 2020 Olympic Games, on July 26, 2019.

Former Special Prosecutor Robert Mueller is sworn in before Congress in Washington, DC, the US, on July 24, 2019. (Photo by AFP)

A fishbone lies on a dry part of the bed of the River Loire at Montjean-sur-Loire, western France, as drought conditions prevail over much of western Europe.

Indian border guards pay homage to slain soldiers who lost their lives in Kargil War at a war memorial, in Srinagar, Kashmir, on July 23, 2019.