Relativity, black holes and quantum mechanics

  • Escape from planet Earth
    problem
    Favourite

    Escape From Planet Earth

    Age
    16 to 18
    Challenge level

    How fast would you have to throw a ball upwards so that it would never land?

  • The ultra particle
    problem

    The Ultra Particle

    Age
    16 to 18
    Challenge level

    Explore the energy of this incredibly energetic particle which struck Earth on October 15th 1991

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