What are the similarities and differences between planets and dwarf planets?

A dwarf planet is usually a spherical body resembling a small planet. Objects in space are round because of their gravity. If they aren’t big enough, they don’t have enough gravity to crush them into ball shape. This asteroid, which came from outside our solar system system recently, looks like a big slab. So both... Continue Reading →

Spaceships and Hollywood

Spoiler alert - in the future there never will be artificial gravity - astronauts won't be able to walk around in spaceships. In the movies most spaceships like the Starship Enterprise employ a convenient technology they call "artificial gravity" to overcome this weightlessness problem. In a few movies they even rotate parts of the ship,... Continue Reading →

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