Hawking urges to send astronauts to moon in next 3 years
British physicist Stephen Hawking urged for the return of Moon missions by 2020 to give humanity a "sense of purpose". He stressed on building a lunar base in 30 years and sending astronauts to Mars by 2025. Hawking also criticised Donald Trump for US' Paris agreement exit, calling it "the most wrong decision on climate change this world has seen."