Solar sailing is a revolutionary way of propelling a spacecraft through space. A solar sail spacecraft has large reflective sails that capture the momentum of light from the Sun and use that momentum to push the spacecraft forward. Please accept marketing-cookies to watch this video. Did you know there's a way for spacecraft to travel farther, faster, and maybe one day reach other stars?
Navigation at Sea, History of
Christopher Columbus Ships
Polynesia began with the voyaging canoe. More than three thousand years ago, the uninhabited islands of Samoa and Tonga were discovered by an ancient people. With them were plants, animals, and a language with origins in Southeast Asia; and along the way they had become a seafaring people. Arriving in probably a few small groups, and living in isolation for centuries, they evolved distinctive physical and cultural traits. Samoa and Tonga became the cradle of Polynesia, and the center of what is now Western Polynesia.
In 1300 B.C., Mesopotamia invented the sailboat. They inv...
Documentary Film based on Gibson's book: Qur'anic Geography. Ancient Sailing and Navigation. Text copyright Canbooks.
The first Western civilization known to have developed the art of navigation at sea were the Phoenicians, about 4, years ago c. Phoenician sailors accomplished navigation by using primitive charts and observations of the Sun and stars to determine directions. Maps, compasses, astrolabes, and calipers are among the early tools used by ocean navigators. In the modern era, these tools have been largely replaced by electronic and technological equivalents. Despite these early beginnings, it would take many centuries before global navigation at sea became possible.