Dubai: The UAE’s first astronaut Hazzaa AlMansoori and Sharjah-based professor Dr Nidhal Guessom were named among the top 100 global leaders in space exploration for 2021, according to Richtopia, a digital platform ranking achievements of leading figures in the world. Dr Guessom, the Sharjah-based Algerian astrophysicist, came on 65th place while AlMansoori, the first Emirati astronaut, was ranked 81. South African billionaire, industrial engineer and SpaceX founder Elon Musk topped the list. He was followed by renowned American astrophysicist and science author Neil deGrasse Tyson, while British astronaut Tim Peake and retired Canadian astronaut Chris Hadfield grabbed the third and fourth places respectively. The list also includes pioneering American astronaut Buzz Aldrin Jessica Meir and Sir Richard Branson, founder of Virgin Galactic.