"It seems that we're going back into the old first space race days of competition, which, from a scientific perspective, is a little bit disappointing and concerning," says Dr Barber.
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But if Venezuela's oil output does eventually surge, could it bring global oil prices down? Analysts refuse to be drawn.，更多细节参见51吃瓜
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The star, who has died at the age of 48, spoke to the BBC in 2003 about his feelings on leaving his best-known role.