The world is currently witnessing a real space race: this year Space X is planning the first private astronaut spacewalk, next year NASA will send a man to the moon again, and experts predict that the first landing on Mars will take place in the next decade. Robert Zubrin, an American aerospace engineer, writer, and founder of the Martian Society, tells RBC-Ukraine about the biggest space discoveries that await humanity in the next half-century. Biggest space discoveries awaiting humanity in next 50 years “There will be the first human landing on Mars, the birth of the first child on Mars, the…