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Natural Phenomenon : Supernova
Four hundred years ago, on 1604, a previously unseen star suddenly appeared in the night sky. It was much brighter than all other stars we would ever seen. The thing later named supernova, which not only beautiful, but also could be dangerous if it gets too close to us. Supernova is a beautiful, epic moment that created by a blast of death star. The word supernova was coined by Walter Baade and Fritz Zwicky in 1931. Its name was derived from nova that means new. Besides a blast that emit lights, supernovas are also known as the end of star’s life cycle. Supernovae may expel much, if not all, of the material away from a star a t velocities up to 30,000 km/s or 10% of the speed of light. The most recent supernova visible to the eye was Supernova 1987A, in the year 1987. It was approximately 168.000 light-years away from us. Based on its elements that appears on their spectra, supernova divided unto 2 types, type 1 that contains no hydrogen and type 2 that contains hydr
Suggestion and Offer Dialogue
Fauzan : Hi, Jona! Where have you been? Jona : I'm from the canteen. By the way, what's that? Fauzan : My biology homework, have you finished this? Jona : Not yet, how about you? Fauzan : Me neither, I was sick yesterday so I didn't go to school and understand nothing Jona : What if we learn the subject together? Fauzan : That would be great, but when will we do it? Jona : Tomorrow, after the school's over at the rooftop. Do you have time? Fauzan : Sure Jona : Well then, let's go to the library to find some biology books Fauzan : Good idea, let's go! p.s : italic = offer bold = suggestion
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