Tonya Hall talks to Brent Barbee, aerospace engineer at NASA, to talk about a hypothetical asteroid encounter marshaling a 21st century planetary defense to the rescue.
2019年7月8日星期一
Huge asteroid will fly by Earth closer than satellites do on Friday the 13th in 2029
Tonya Hall talks to Brent Barbee, aerospace engineer at NASA, to talk about a hypothetical asteroid encounter marshaling a 21st century planetary defense to the rescue.
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