Paragraph 2
It is the first time for
to change the
of an asteroid. A NASA spokesperson said DART was the
of many "planetary protection
". He talked about the end of the dinosaurs. He said: "We want to have a better
than the dinosaurs had 65 million years ago." He added that all the
could do was to "look up and say, 'Oh asteroid'". NASA also said DART was a "new
for humankind". It said: "It's an era in which we
have the capability to protect ourselves from
like a dangerous, hazardous asteroid
."