4/1/2024 0 Comments Planet centauri amethyst![]() It’s the only world known to harbor life. The third planet from the sun, Earth is a waterworld, with two-thirds of the planet covered by ocean. Named for: Roman goddess of love and beauty Because it is often brighter than any other object in the sky - except for the sun and moon - Venus has generated many UFO reports. The Greeks believed Venus was two different objects - one in the morning sky and another in the evening. Its size and structure are similar to Earth, Venus' thick, toxic atmosphere traps heat in a runaway "greenhouse effect." Oddly, Venus spins slowly in the opposite direction of most planets. ![]() Scientists describe Venus’ situation as a runaway greenhouse effect. The pressure at the surface would crush and kill you. The second planet from the sun, Venus is terribly hot, even hotter than Mercury. ![]() Over its four-year mission, NASA's MESSENGER spacecraft has revealed views of the planet that have challenged astronomers' expectations.ĭiscovery: Known to the ancients and visible to the naked eye Mercury has virtually no atmosphere to absorb meteor impacts, so its surface is pockmarked with craters, just like the moon. Its day side is scorched by the sun and can reach 840 degrees Fahrenheit (450 Celsius), but on the night side, temperatures drop to hundreds of degrees below freezing. The closest planet to the sun, Mercury is only a bit larger than Earth's moon.
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