NASA is planning to crash a probe into an asteroid to protect the planetDigital TrendsWhen such an impact does occur — as it did in 2013 when a meteor injured 1,500 people in Chelyabinsk, Russia — it's a sudden reminder of the ...Video emerges of fireball streaking across South Australia sky9news.com.auHundreds of people took to social media after witnessing the bright light. "What I can only