For a short time after its discovery in 2004, astronomers thought an asteroid dubbed Apophis had a significant chance of impacting Earth in 2029.
Since then, more precise measurements of its trajectory have shown that it doesn't pose a significant risk to Earth in the near future. When it does pass Earth in 2029, though, it will fly closer than some of Earth's satellites. And NASA could be ready to send a swarm of spacecraft to capture a wealth of data from the massive space rock.
"Nature has provided us with such a prime opportunity to demonstrate our space mission prowess," Lal said at the Planetary Defense Conference. "In this case, to perform rapid reconnaissance of an approaching object that might be an impact threat to learn all we can about it and inform any action we might need to take to mitigate potential disaster."
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