Showing posts with label Earth. Show all posts
The Moon is in synchronous rotation with Earth, always
showing the same face with its near side marked by dark volcanic maria that
fill between the bright ancient crustal highlands and the prominent impact
craters. It is the most luminous object in the sky after the Sun. Although it
appears a very bright white, its surface is actually dark, with a reflectance
just slightly higher than that of worn asphalt. Its prominence in the sky and
its regular cycle of phases. Source
Middle-earth is the fictional universe setting of the majority of author J. R. R. Tolkien's fantasy writings. The Hobbit and The Lord of the Rings take place entirely in Middle-earth, as does much of The Silmarillion and Unfinished Tales. Properly, Middle-earth is the central continent of the imagined world, not a name of the entire world. Tolkien prepared several maps of Middle-earth and of the regions of Middle-earth where his stories took place. Some were published in his lifetime, though some of the earliest maps were not published until after his death. Source
Earth, also known as "the Earth" and "the World" and sometimes referred to as the "Blue Planet", the "Blue Marble", Terra or "Gaia", is the third-closest planet to the Sun, the densest planet in the Solar System, the largest of the Solar System's four terrestrial planets and the only celestial body known to accommodate life. It is home to millions of species, including a global population of humans, that are supported and nourished by its biosphere and minerals. The human population is grouped into around two-hundred independent sovereign states that interact, among other means, through diplomacy, conflict, travel, trade and media. According to evidence from sources such as radiometric dating, Earth was formed around four and a half billion years ago. Source
