White Mars: Or, the Mind Set Free : A 21St-Century Utopia

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Elsewhere, particularly on the oldest areas of the Martian surface, finer-scale, dendritic networks of valleys are spread across significant proportions of the landscape. The moon will complete three-quarters of its orbit around Earth, measured from the previous new moon, on Sunday, Nov. Cave entrances measure from 100 to 252 metres (328 to 827ft) wide and they are estimated to be at least 73 to 96 metres (240 to 315ft) deep.

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G. Wells's The War of the Worlds, in which Martians seek to escape their dying planet by invading Earth; Ray Bradbury's The Martian Chronicles, in which human explorers accidentally destroy a Martian civilization; as well as Edgar Rice Burroughs's series Barsoom, C. As Mars approaches opposition, it begins a period of retrograde motion, which means it will appear to move backwards in a looping curve with respect to the background stars. The origin of both moons is unclear, although a popular theory states that they were asteroids captured into Martian orbit. The planet will travel eastward from Libra, through Scorpius and southern Ophiuchus before entering Sagittarius on Nov.The average time between the successive oppositions of Mars, its synodic period, is 780 days; but the number of days between successive oppositions can range from 764 to 812. Therefore, their closest approaches, the inferior conjunctions, are the second closest for Earth after those with Venus, and the closest for Mars to any other planet. NASA's Mariner 4 was the first spacecraft to visit Mars; launched on 28 November 1964, it made its closest approach to the planet on 15 July 1965. Full moons that occur during the cold months in North America will climb as high in the sky as the summer noonday sun and cast similar shadows. The total volume of ice in the south polar cap plus the adjacent layered deposits has been estimated at 1.

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Since Earth will be positioned between the sun and the planet on that date, Jupiter will rise at sunset, remain visible all night long, and set at sunrise. The surface of Mars hosts a large shield volcano ( Olympus Mons) and one of the largest canyons in the Solar System ( Valles Marineris). But to fully enjoy the heavens — especially a meteor shower, the fainter constellations, or to see the amazing swath across the sky that is the disk of our home galaxy, the Milky Way — rural areas are best for night sky viewing. The lower (easterly) cluster NGC 884 is looser and includes a handful of 8th-magnitude golden stars. The Spirit rover found concentrated deposits of silica in 2007 that indicated wet conditions in the past, and in December 2011, the mineral gypsum, which also forms in the presence of water, was found on the surface by NASA's Mars rover Opportunity.

The dark features were thought to be seas, hence their names Mare Erythraeum, Mare Sirenum and Aurorae Sinus. making it an all-night target during November — especially in the late evening, when it will be highest, and will appear most clearly in a backyard telescope or binoculars.

White Mars: Aldiss, Brian W., Penrose, Roger: 9780312254735

The long-lasting, weak shower is the first of two consecutive showers derived from debris dropped by the passage of periodic Comet 2P/Encke. When the moon approaches its full phase, all of the sites where the astronauts explored are illuminated by sunlight, but no telescope on Earth is strong enough to see the equipment they left on the moon. There is evidence of an enormous impact basin in the Northern Hemisphere of Mars, spanning 10,600 by 8,500 kilometres (6,600 by 5,300mi), or roughly four times the size of the Moon's South Pole – Aitken basin, the largest impact basin yet discovered. Elements with comparatively low boiling points, such as chlorine, phosphorus, and sulfur, are much more common on Mars than on Earth; these elements were probably pushed outward by the young Sun's energetic solar wind.Other scientists caution that these results have not been confirmed, and point out that Martian climate models have not yet shown that the planet was warm enough in the past to support bodies of liquid water. During Sumerian times, Nergal was a minor deity of little significance, but, during later times, his main cult center was the city of Nineveh. Large albedo features retain many of the older names but are often updated to reflect new knowledge of the nature of the features.