They also need to test the technology to bring the material back to Earth.
Go to technology
，这一点在同城约会中也有详细论述
In his State of the Union address this week, Trump alleged that Iran posed a direct threat to the US and that the country was “working to build missiles that will soon reach the United States of America”. But that claim has not been backed up with evidence by the White House or the Pentagon, and US intelligence reports from just last year say that it would take Iran 10 years to develop an intercontinental ballistic missile that could reach the US.
But while she was delighted when the opt-out system was introduced, she didn't realise the "fatal flaw" of next of kin being able to rescind their loved one's wishes.