Popular Posts

• Galileo’s Glassworks: The Telescope and the Mirror

  The Dutch telescope and the Italian scientist Galileo have long enjoyed a durable connection in the popular mind–so much so that it seems this simple glass instrument transformed a rather modest middle-aged scholar into the bold icon of the Copernican Revolution. And yet the extraordinary speed with which the telescope changed the course of Galileo’s [...]

• The Development of Jet and Turbine Aero Engines

  Using language understandable to those without an engineering background and avoiding complex mathematical formulae, Bill Gunston explains the differences between gas-turbine, jet, rocket, ramjet and helicopter turbo shaft aero engines.   He traces their histories from the early days through to today’s complex and powerful units as used in the latest wide-bodied airliners and high [...]

• Methinks The Sphinx Makes Astro Links To Salvation And Messiah

  Enigma in Stone – Lingering Symbol of the Ages If you can imagine it, stretch your mind, and think for a second. The Sphinx has been stumbled upon, lived next to, marched toward and viewed from afar, for ages. Looming peacefully in the sands, it has been a winsome illusory desert vision, and something to [...]

• The Great Comet Crash: The Collision of Comet Shoemaker-Levy 9 and Jupiter

  The Great Comet Crash is a record of the spectacular collision between Comet Shoemaker-Levy 9 and the giant planet Jupiter in July 1994. Researchers who were involved in all aspects of observing and interpreting the encounter give personal narratives of the events, from the discovery of the comet through to the dramatic effects on the [...]

• The Monuments of Mars: A City on the Edge of Forever, 4th Edition

  In 1976, NASA sent four Viking spacecraft to Mars to photograph the planet and test for the presence of life. One of the orbiters photographed a mile-long mesa that uncannily resembled a human face. Hoagland takes readers step by step through the NASA images and evidence that a former civilization may have lived on Mars. [...]