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ScienceIQ Facts

Physics & Astronomy Facts

Mach 1: Fast planes and Ernst Mach
How Fast is Mach 1?

A Mach number is a common ratio unit of speed when one is talking about aircrafts. By definition, the Mach number is a ratio of the speed of a body (aircraft) to the speed of sound in the undisturbed ...

Near-Earth Supernovas

Supernovas near Earth are rare today, but during the Pliocene era of Australopithecus supernovas happened more often. Their source was an interstellar cloud called 'Sco-Cen' that was slowly gliding by ...
The Moon
Lunar Explorations

Ever since the beginning of intelligent life on Earth, the moon has been a focal point of human curiosity. Galileo’s discovery in 1610 that the moon had craters, valleys and mountains, instead of the ...

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