Listen to News: Meteor Explodes Over Russia ~ 19 February 2013
Discussion Question: Scientists believe that this type of event happens about once every 100 years. Does a rare ocurrence like this justify the building of early warning systems from space?
Any way of preventing major damages to us is always welcome in advance, mainly when it comes to the catastrophic results of big asteroids over the Earth's surface seen in the example of the one that crossed the Russian sky in February this year


