American - Scientist | -
I think every time we send a spacecraft to an asteroid or comet, we learn more.
Carrie Nugent
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Our solar system is actually a wild frontier, teeming with different, diverse places: planets and moons, millions of objects of ice and rock.
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I think the public perception about asteroids is that they're kind of metaphors for acts of God, the fact that we have no control over the universe. They're always seen as these uncontrollable events. But when you look at the science, they're actually the exact opposite.
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Astronomers are using every technique at their disposal to discover and study asteroids.
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I love studying asteroids because they are relatively simple, just rocks in space. They can be understood with physics and described with elegant equations. For the most part, they are serene celestial bodies.
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An asteroid impact is a preventable natural disaster. It's in part preventable because we have the technology, and it's in part preventable because it's predictable.
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There's been a lot of really great intensive research into earthquakes, but we can't predict an earthquake down to the day. We can't predict where a hurricane is going to be a month in advance.
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On the whole, asteroids tend to leave Earth alone. And day to day, there really isn't cause for most people to give them any thought. But despite being remote objects that most people have never seen, asteroids, and the threat they pose, come up an awful lot in popular culture.
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Changing the asteroid's velocity changes the time when the asteroid crosses Earth's orbit. After all, just because it crosses Earth's path doesn't mean there is necessarily going to be a collision. It has to cross Earth's path when the Earth is right there.
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There are physical bodies, physical worlds that astronauts could visit, that we haven't found yet. Especially, there's these close approaches of asteroids. They pass within geosynchronous orbit sometimes, and they pass within the Earth and the moon.
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I think that, a lot of times, people have this idea that the solar system is entirely explored, that we have sent spacecraft to every planet, we've taken beautiful pictures of everything, and that it's kind of done.
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NEOWISE has two goals: One is to characterize asteroids, figure out how big and how bright they are, really basic information about these bodies; and we also find asteroids.
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