Paragraph 2
						  
It is the first 
 that humans have tried to change the 
 of a space object. NASA spokesperson Glen Nagle said DART was the 
 of many "planetary protection missions". He compared our 
 of surviving an asteroid hit to the 
 of the dinosaurs. He said: "We want to have a better 
 than the dinosaurs had 65 million years ago." He added that in pre-
, all the dinosaurs could do was to "look up and say, 'Oh asteroid'". Another spokesperson, Lori Glaze, said DART represented a "new 
 for humankind". She said: "It's an era in which we 
 have the capability to protect ourselves from something like a dangerous, hazardous asteroid 
."