Experts think this is more than 40,000 years old and was made by Neanderthals or an earlier species of human.
The BBC's Regan Morris details what the celebrity gathering was like ahead of the awards ceremony next month.
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"We're going to be going into an orbit almost right away that is 40,000 miles out - like a fifth of the way of the Moon," Koch told BBC News.
无论采用哪种方法论，清晰的目标定义和有效的沟通是成功的基础。