Mars One Habitat Size

Mars One’s original concept includes launching a robotic Mars lander and Mars orbiter as early as 2020, to be followed by a human crew of four in 2024, and one in 2026 which would not be returning to Earth. Although the announcement garnered much international publicity, the concept has been criticized by scientists, engineers, and […]

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Orion Nebula M43

The green hue was a puzzle for astronomers in the early part of the 20th century because none of the known spectral lines at that time could explain it. There was some speculation that the lines were caused by a new element, and the name nebulium was coined for this mysterious material. With better understanding […]

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