App of the week: Stephen Hawking's Snapshots of the Universe | eSchool News | eSchool News - 0 views
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anita z boudreau on 10 Feb 14"Stephen Hawking's Snapshots of the Universe explains the principles that control our universe through simple and fun experiments. You'll learn why: planets stay in orbit around stars, black holes may not actually be black, time is not the same for everyone, objects fall at different speeds, stars are not always where we perceive them to be, and much more."