Planetary securityWhat Hollywood Gets Wrong, and Right, about Asteroids
In the 1998 movie “Armageddon,” an asteroid the width of Texas is about to hit Earth. The heroes who stop it in the nick of time are a group of orange-suited Americans, all men. Life isn’t always like the movies. Not that an asteroid couldn’t slam into Earth, mind you. Asteroids — mostly tiny ones — pass by our planet virtually every second. But the people charged with stopping the big ones aren’t reaching for their spacesuits with mere hours to spare.
Meet Kirsten Howley, the real-life astrophysicist working to prevent an asteroid “Armageddon”
In the 1998 movie “Armageddon,” an asteroid the width of Texas is about to hit Earth. The heroes who stop it in the nick of time are a group of orange-suited Americans, all men.
Life isn’t always like the movies.
Not that an asteroid couldn’t slam into Earth, mind you. Asteroids — mostly tiny ones — pass by our planet virtually every second. But the people charged with stopping the big ones aren’t reaching for their spacesuits with mere hours to spare.
And spoiler alert: They also aren’t all men.
“I would say the number one question I get when I tell people what I work on is ‘Oh, like ‘Armageddon?’ ’’ And it’s nothing like ‘Armageddon,’” says Lawrence Livermore National Laboratory (LLNL) physicist Kirsten Howley, whose day job includes defending our planet from asteroids.
Howley doesn’t have an orange jumpsuit at hand, but her job is serious business. She and her team of planetary defenders specialize in how we might deflect an asteroid that poses a threat to Earth, like Bennu (see the video).
Bennu, weighing more than 78 billion kilograms, is an ancient asteroid currently orbiting the sun on a path that brings it close to Earth. It has a 1-in-2,700 chance of colliding, albeit not until 2185.
Last fall, NASA collected a sample from Bennu, the first NASA mission to procure material from an asteroid as it traveled through space. Those samples, once they make it back to Earth, will help physicists like Howley with their very important job — to make sure Bennu (and objects like it) don’t impact.
What that effort requires is a lot more complicated, and less immediately perilous, than the movies would have you think, although the goal of saving life on Earth is just the same.
For starters, Bennu is far more compelling than any old rock. What we’ve already learned, and hope to learn about it, could not only save the planet — it also could help change our understanding of what an asteroid (or even life) is.
Bennu
Before you think of Bennu simply as a missile hurtling through space, consider it as an object of interest in its own right.
