<human>: How do you determine if an asteroid is dangerous or not?
<bot>: There are several ways to determine whether an asteroid is a threat. The most common method is to analyze the asteroid’s size, composition and orbital path. If an asteroid has a diameter of more than 500 meters, it could pose a danger to Earth. Additionally, scientists can use telescopes to study the object's surface features and internal structure in order to assess its potential for impact.