Saturn's density is less than water's, allowing it to float
Saturn's density is less than water's, allowing it to float
Sun
The Sun makes up 99.86% of all mass in the solar system
Tardigrades can survive in space, boiling water, and temperatures near absolute zero
Tardigrades survive extreme conditions: space, boiling water, near absolute zero
Neutron stars are so dense that a teaspoon of their material would weigh about 6 billion tons
Neutron stars: teaspoon weighs ~6 billion tons
Edwin Hubble showed galaxies recede with a velocity proportional to their distance
Hubble's Law: v = H₀d, where v is recession velocity, H₀ is Hubble's constant, and d is distance
Henrietta Swan Leavitt
Henrietta Leavitt discovered the period-luminosity relation of Cepheid variables
Chemistry: A Volatile History
52! ≈ 8 × 10^67 possible arrangements of a deck of cards
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