LYTHAM ST ANNES, ENGLAND - AUGUST 24: Val Gale attends the funeral service of her partner and Star Wars actor Kenny Baker on August 24, 2016 in Lytham St Annes, England. Kenny Baker is best known for portraying the droid character R2-D2 in the Star Wars science fiction movie franchise. Kenny passed away at home in Preston, aged 81, after suffering respiratory problems. (Photo by Christopher Furlong/Getty Images)

LUTON, ENGLAND - AUGUST 24: Prince William, Duke of Cambridge plays a computer game during a visit to Youthscape on August 24, 2016 in Luton, England. The Duke and Duchess visited Youthscape at Bute Mills to tour the facility and learn about Youthscape's work, and then meet CHUMS and the OM Group and Luton Council of Faiths and Grassroots for discussions about coping with suicide and supporting young people's mental health and emotional wellbeing across faith groups. (Photo by Eddie Mulholland - WPA Pool/Getty Images)

LUTON, ENGLAND - AUGUST 24: Prince William, Duke of Cambridge plays a computer game during a visit to Youthscape on August 24, 2016 in Luton, England. The Duke and Duchess visited Youthscape at Bute Mills to tour the facility and learn about Youthscape's work, and then meet CHUMS and the OM Group and Luton Council of Faiths and Grassroots for discussions about coping with suicide and supporting young people's mental health and emotional wellbeing across faith groups. (Photo by Eddie Mulholland - WPA Pool/Getty Images)

LUTON, ENGLAND - AUGUST 24: Prince William, Duke of Cambridge plays a computer game during a visit to Youthscape on August 24, 2016 in Luton, England. The Duke and Duchess visited Youthscape at Bute Mills to tour the facility and learn about Youthscape's work, and then meet CHUMS and the OM Group and Luton Council of Faiths and Grassroots for discussions about coping with suicide and supporting young people's mental health and emotional wellbeing across faith groups. (Photo by Eddie Mulholland - WPA Pool/Getty Images)

TOKYO, JAPAN - AUGUST 24: Delegates including Rio de Janeiro Olympic Japan squad General Superintendent Yuji Takada (from 2nd left to right), Sub-Leader Yasuhiro Yamashita, Leader Seiko Hashimoto, Sub-captain Keisuke Ushiro, Team captain Saori Yoshida, the governor of Tokyo Yuriko Koike, Japanese Olympic Committee (JOC) President Tsunekazu Takeda, Director General Toshiro Muto, Minister of Education, Culture, Sports, Science and Technology Hirokazu Matsuno and Commissioner of the Japan Sports Agency Daichi Suzuki pose with the Olympic flag and the JOC flag during the "The Arrival of Olympic Flag Ceremony" at the Haneda Airport on August 24, 2016 in Tokyo, Japan. (Photo by Masterpress/Getty Images)

TOKYO, JAPAN - AUGUST 24: The media gather as the delegates including Rio de Janeiro Olympic Japan squad General Superintendent Yuji Takada (from 2nd left to right), Sub-Leader Yasuhiro Yamashita, Leader Seiko Hashimoto, Sub-captain Keisuke Ushiro, Team captain Saori Yoshida, the governor of Tokyo Yuriko Koike, Japanese Olympic Committee (JOC) President Tsunekazu Takeda, Director General Toshiro Muto, Minister of Education, Culture, Sports, Science and Technology Hirokazu Matsuno and Commissioner of the Japan Sports Agency Daichi Suzuki pose with the Olympic flag and the JOC flag during the "The Arrival of Olympic Flag Ceremony" at the Haneda Airport on August 24, 2016 in Tokyo, Japan. (Photo by Masterpress/Getty Images)

TOKYO, JAPAN - AUGUST 24: (from left) Rio de Janeiro Olympic Japan squad General Superintendent Yuji Takada, Sub-Leader Yasuhiro Yamashita, Leader Seiko Hashimoto, Sub-captain Keisuke Ushiro, Team captain Saori Yoshida, the governor of Tokyo Yuriko Koike, Japanese Olympic Committee (JOC) President Tsunekazu Takeda, Director General Toshiro Muto, Minister of Education, Culture, Sports, Science and Technology Hirokazu Matsuno and Commissioner of the Japan Sports Agency Daichi Suzuki pose with the Olympic flag (R) and the JOC flag during the "The Arrival of Olympic Flag Ceremony" at the Haneda Airport on August 24, 2016 in Tokyo, Japan. (Photo by Masterpress/Getty Images)

Concept portrayal of China's Mars rover and lander released on August 23, 2016 by lunar probe and space project center of Chinese State Administration of Science, Technology and Industry for National Defence. China Daily/via REUTERS