The Moon is thought to have formed when an object roughly the size of Mars hit the Earth. The impact was so violent that it threw large amounts of the Earth's mantle into orbit. This material evenually coalesced and formed the Moon.
Ansel Easton Adams was an American photographer and environmentalist. His black-and-white landscape photographs of the American West, especially Yosemite National Park, have been widely reproduced on calendars, posters, and in books.
Ian Adams is an environmental photographer specializing in natural, historical, rural, and garden landscapes. More than 2,000 of his photographs have been published in books, calendars, posters, magazines, and other publications. His recent books include Stan Hywet Hall & Gardens, The Ohio Lands, The Free-Spirited Garden, and Midwest Landscape Design.