Watch Live as Asteroid 2002 AM31 Flys by Earth on SundayWatch Live as Asteroid 2002 AM31 Flys by Earth on Sunday
<p>Watch live this weekend as an asteroid the size of a city block flies past the Earth.</p> <p style="text-align:center" class="small"><br /> Asteroid 4179 Toutatis passed by the Earth in 2004. Credit: ESO</p> <p>On
