Which university are you at? <a href=" http://teazr.me/02/indoor-garden-strawberry/ ">erexin v tablets questions</a> According to NASA, "being classified as a PHA does not mean that an asteroid will impact the Earth: None of these PHAs is a worrisome threat over the next 100 years. By continuing to observe and track these asteroids, their orbits can be refined and more precise predictions made of their future close approaches and impact probabilities."