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Because Venus is completely covered in clouds, human knowledge of surface conditions was largely speculative until the space probe era. Until the mid-20th century, the surface environment of Venus was believed to be similar to Earth, hence it was widely believed that Venus could harbor life.
Infrared image of the night-side of Venus, showing different layers of clouds at altitudes of 35 to 50 km in different colours. Red coloured clouds are the highest, green and blue are below. Carbon dioxide and monoxide areas are absorbing infrared signatures. Venusian clouds are thick and are composed mainly (75–96%) of sulfuric acid droplets ...
Studies have proven that Venus needed liquid water three billion years ago to be able to have such high concentrations of water-related minerals and gases on its surface and in its atmosphere today. However, such studies proved that the liquids would only have lasted up until 700 million to 750 million years ago, before eventually evaporating ...
The human obsession with space travel long predates our frantic search for an escape hatch from a wounded Earth. That's probably why we still consider deadly hellscapes like Mars colonizable and ...
At the top of the clouds, the wind speed on Venus reaches up to 95 m/s (340 km/h; 210 mph), circling the planet approximately every four Earth days in a phenomenon known as "super-rotation". [13] Compared to the Venusian solar day of 118 Earth days, colonies freely floating in this region could therefore have a much shorter day-night cycle ...
The EnVision Venus explorer will study that planet in unprecedented detail, from inner core to the top of its atmosphere, to help astronomers understand why the hot, toxic world didn’t turn out ...
Venus likely had liquid water on its surface for at least a few million years after its formation. [10] [11] The Venus Express detected that Venus loses oxygen and hydrogen to space, and that the escaping hydrogen doubles the oxygen. The source could be Venusian water, that the ultraviolet radiation from the Sun splits into its basic composition.
The terraforming of Venus or the terraformation of Venus is the hypothetical process of engineering the global environment of the planet Venus in order to make it suitable for human habitation. [1] [2] [3] Adjustments to the existing environment of Venus to support human life would require at least three major changes to the planet's atmosphere ...