!GENESIS Positional Astronomy, Synchronization and Time Reckoning

  Willy Ley_Absconded Milliseconds.htm

  Willy Ley_Names in the Sky.htm

  Willy Ley_The Days of the Week.htm

  Willy Ley_The Forerunners of the Planetarium_1.jpg

  Willy Ley_The Forerunners of the Planetarium_3.jpg

  Willy Ley_The Southern Cross.htm

  Willy Ley_The Variable Date of Easter.htm

 AU 000 The Death of the Sun

  Willy Ley_Death of the Sun.htm

 AU 007 Venus, Mercury and Vulcan

  Willy Ley_Observation of the Inner Planets_1.jpg

  Willy Ley_Observation of the Inner Planets_3.jpg

  Willy Ley_The Moon of Venus.htm

  Willy Ley_The Planet Vulcan_Lescarbault’s observatory.jpg

  Willy Ley_Unveiling the Mystery Planet_1.jpg

  Willy Ley_Unveiling the Mystery Planet_Emsh.jpg

 AU 010 Earth

  Willy Ley_Cause of the Ice Age_Jean M Auel.jpg

  Willy Ley_Cause of the Ice Age_Pleistocene.jpg

  Willy Ley_OTEC_1.jpg

  Willy Ley_OTEC_3.jpg

  Willy Ley_Remnants of the Sarmantian Sea_1.jpg

  Willy Ley_The Home-Made Land.htm

  Willy Ley_The Home-Made Land_2.jpg

  Willy Ley_The Home-Made Land_4.jpg

  Willy Ley_The Home-Made Land_Afsluitdijk.jpg

 AU 010 Earth_Curiosa

  Willy Ley_Antikhthon.jpg

  Willy Ley_Hollow Earth_1.jpg

  Willy Ley_Hollow Earth_3.jpg

  Willy Ley_Hollow Earth_Kurt Lasswitz.jpg

  Willy Ley_The Book of Enoch.htm

  Willy Ley_The Great Pyramid, the Golden Section and Pi_1.jpg

  Willy Ley_The Great Pyramid, the Golden Section and Pi_3.jpg

  Willy Ley_The Great Pyramid, the Golden Section and Pi_5.jpg

  Willy Ley_The Great Pyramid, the Golden Section and Pi_Khufu.jpg

  Willy Ley_The Magic Mountain_A Mountain of Loadstone.jpg

 AU 010 Earth_Thalassa

  Willy Ley - Decompressed Deep Sea Fish.htm

  Willy Ley - Monsters of the Deep_01.jpg

  Willy Ley - Monsters of the Deep_03.jpg

  Willy Ley - Monsters of the Deep_05.jpg

  Willy Ley - Monsters of the Deep_07.jpg

  Willy Ley - Monsters of the Deep_09.jpg

  Willy Ley - Monsters of the Deep_11.jpg

  Willy Ley - My Friend, the Nautilus_1.jpg

  Willy Ley - My Friend, the Nautilus_3.jpg

  Willy Ley - My Friend, the Nautilus_5.jpg

  Willy Ley - My Friend, the Nautilus_Nautilus Pompilus.jpg

  Willy Ley - The Strange Planet Next Door_1.jpg

  Willy Ley - The Strange Planet Next Door_3.jpg

  Willy Ley - The Strange Planet Next Door_Gaughan.jpg

  Willy Ley - The Strange Planet Next Door_HMS Challenger_2.jpg

 AU 010 Earth_The Moon

  Notes_Moon Mysteries_Hyginus Rill.jpg

  Willy Ley_Moon Mysteries.htm

  Willy Ley_Moon Mysteries_01b.jpg

  Willy Ley_Moon Mysteries_03.jpg

  Willy Ley_Moon Mysteries_05.jpg

  Willy Ley_Moon Mysteries_07.jpg

  Willy Ley_Moon Mysteries_09.jpg

  Willy Ley_Moon Mysteries_11.jpg

  Willy Ley_Perceived Size of the Moon.jpg

  Willy Ley_The Air on the Moon.jpg

  Willy Ley_The Other Side of the Moon_1.jpg

  Willy Ley_The Other Side of the Moon_3.jpg

  Willy Ley_The Other Side of the Moon_5.jpg

 AU 015 Mars

  Willy Ley_Close-Up on Mars (synodic periods).htm

  Willy Ley_Close-up on Mars_2.jpg

  Willy Ley_Close-up on Mars_Mars in opposition_1.jpg

  Willy Ley_How to Get Around on other Planets.htm

  Willy Ley_How to Get Around on other Planets_2.jpg

  Willy Ley_How to Get Around on other Planets_4.jpg

  Willy Ley_How to Get Around on other Planets_6.jpg

  Willy Ley_Life on Mars and Elsewhere.htm

  Willy Ley_Mars_Camille Flammarion.jpg

  Willy Ley_Mars_Lucien Rudeau.jpg

  Willy Ley_The Year on Mars (Leap Years) Sep 56.htm

 AU 015 Mars_Phobos & Deimos

  Willy Ley_Small Bodies Near Heavy Planets.htm

  Willy Ley_Small Bodies Near Heavy Planets_Lucien Rudeau.jpg

  Willy Ley_The 'Martian Space Stations'_Dember.jpg

 AU 030 Asteroids

  Willy Ley_Asteroid Roundup_1.jpg

  Willy Ley_Asteroid Roundup_Eros_explore-me.jpg

 AU 030 Asteroids_The Sky is Falling

  Notes_When Will Worlds Collide.html

  Willy Ley_Meteorite Falls (casulties).htm

  Willy Ley_Meteors, Meteoroids and Meteorites.htm

  Willy Ley_The Meteoric Stream.jpg

  Willy Ley_The Sound of Meteorites_1.jpg

  Willy Ley_The Sound of Meteorites_3.jpg

  Willy Ley_When Will Worlds Collide_1.jpg

  Willy Ley_When Will Worlds Collide_Bonestell_1.jpg

  Willy Ley_When Will Worlds Collide_Paramount_1.jpg

 AU 052 The Red Spot of Jupiter

  Willy Ley_Jupiter's Red Spot.jpg

 AU 052 The Terrestrial Planets and the Moons

  Notes_The Redesigned_Chesley Bonestell_Mr Smith Goes to Venus.jpg

  Willy Ley_The Redesigned Solar System (Farewell to all that).htm

  Willy Ley_The Redesigned Solar System_2.jpg

  Willy Ley_The Solar System and its Moons.htm

  Willy Ley_The Solar System and its Moons_2.jpg

  Willy Ley_The Solar System and its Moons_4.jpg

  Willy Ley_The Solar System and its Moons_line up_solar system.jpg

  Willy Ley_Who'll Own the Planets_Mars.jpg

  Willy Ley_Who'll Own the Planets_Titan.jpg

 AU 400 A Dwarf Planet Called Pluto

  Willy Ley_The Demotion of Pluto.htm

  Willy Ley_The Demotion of Pluto_2.jpg

  Willy Ley_The Demotion of Pluto_4.png

  Willy Ley_The Diameter of Pluto.htm

  Willy Ley_The Near Discovery of Pluto in 1919.htm

 AU 800 Comets

  Willy Ley_Mission to a Comet.htm

  Willy Ley_Mission to a Comet_2.jpg

  Willy Ley_Mission to a Comet_4.jpg

  Willy Ley_The Orbits of the Comets.htm

  Willy Ley_The Worst of All Comets_1.jpg

  Willy Ley_The Worst of All Comets_3.jpg

 AU 800 Comets_Tunguska

  Willy Ley_Too Much Imagination.jpg

 NEWTON Earth Tunnels and Public Transportation

  Notes and Criticism_Public Transportation_All We Marsmen_Finlay.jpg

  Notes and Criticism_Public Transportation_Soltau Roller Coaster.jpg

  Willy Ley_Earth Tunnels.htm

  Willy Ley_Mutant of the Iron Horse.htm

  Willy Ley_Mutant of the Iron Horse_2.jpg

  Willy Ley_Mutant of the Iron Horse_4.jpg

  Willy Ley_Mutant of the Iron Horse_6.jpg

 NEWTON Hohmann Orbits

  Notes_Hohmann Transfer Orbits.htm

  Notes_Hohmann Transfer Orbits_2.png

  Notes_Hohmann Transfer Orbits_4.png

  Philip Latham_The Aphrodite Project.jpg

  Willy Ley_Second Trip to Venus.htm

 NEWTON Lagrange Points and Geostationary Satellites

  Notes_Lagrange Points and Geostationary Satellites.htm

  Willy Ley_Earth's Extra Satellites.htm

  Willy Ley_Earth's Other Moons.htm

  Willy Ley_Earth's Other Moons_2.jpg

  Willy Ley_Interplanetary Communications.png

  Willy Ley_Lagrange Points_1.jpg

  Willy Ley_Lagrange Points_3.jpg

  Willy Ley_Synchronous Satellite.jpg

  Willy Ley_The Trojan Planets.jpg

 NEWTON Rocket Science_Precursors

  Notes_The Elements of Khujut Rabua and Ctesiphon.html

  Notes_Who Invented the Crossbow.html

  Notes_Who Invented the Crossbow_pocket crossbow.jpg

  Willy Ley_2000 Year Old Car Batteries (The Elements of Khujut Rabua and Ctesiphon).htm

  Willy Ley_2000 Year Old Car Batteries (The Elements of Khujut Rabua and Ctesiphon)_2.jpg

  Willy Ley_2000 Year Old Car Batteries (The Elements of Khujut Rabua and Ctesiphon)_4.jpg

  Willy Ley_Friar Bertholdus_1.jpg

  Willy Ley_Greek Fire.htm

  Willy Ley_Who Invented the Crossbow.htm

  Willy Ley_Who Invented the Crossbow_02.png

  Willy Ley_Who Invented the Crossbow_04.png

  Willy Ley_Who Invented the Crossbow_06.png

  Willy Ley_Who Invented the Crossbow_08.png

  Willy Ley_Who Invented the Crossbow_10.png

 NEWTON Rocket Science_Rocket Equation

  Notes_Rocket Equation_graph.jpg

  Notes_Rocket Equation_Voyage to the Planets.jpg

  Willy Ley_Rocket Fuels_Carl Barks 59-01_Weemite.jpg

  Willy Ley_The Why of Liquid Propellants.htm

  Willy Ley_The Why of Liquid Propellants_2.jpg

 NEWTON Rocket Science_Rocket History

  Notes_Missing Ingredient.htm

  Willy Ley_Eight Days in the Story of Rocketry_1.jpg

  Willy Ley_Eight Days in the Story of Rocketry_3.jpg

  Willy Ley_Eight Days in the Story of Rocketry_5.jpg

  Willy Ley_Eugen Saenger and the Rocket Propelled Airplane_1.png

  Willy Ley_Eugen Saenger and the Rocket Propelled Airplane_3.jpg

  Willy Ley_Eugen Saenger and the Rocket Propelled Airplane_5.jpg

  Willy Ley_Mail by Rocket.htm

  Willy Ley_Mail by Rocket_2.jpg

  Willy Ley_Missing Ingredient (Rockets in 1906).jpg

  Willy Ley_On Rockets and Their History.htm

  Willy Ley_Space Travel by 1960.jpg

  Willy Ley_The End of the Jet Age.jpg

  Willy Ley_The How of Space Travel.htm

  Willy Ley_The How of Space Travel_2.jpg

  Willy Ley_The How of Space Travel_4.jpg

  Willy Ley_The How of Space Travel_6.jpg

  Willy Ley_The How of Space Travel_GALAXY.jpg

  Willy Ley_The Orbital Satellite Vehicle.html

 NEWTON Rocket Science_Rockets vs Guns

  Notes_Busy Lizzy_Babylon Gun.jpg

  Willy Ley_Busy Lizzy_1.jpg

  Willy Ley_Rocket to the Moon (frag).htm

  Willy Ley_Rocket to the Moon_Mechanix Illustrated_02.png

  Willy Ley_Rocket to the Moon_Mechanix Illustrated_04.png

  Willy Ley_Rocket to the Moon_Mechanix Illustrated_06.png

  Willy Ley_Rocket to the Moon_Mechanix Illustrated_08.jpg

  Willy Ley_Rocket to the Moon_Mechanix Illustrated_10.jpg

  Willy Ley_Rocket to the Moon_Mechanix Illustrated_cover.jpg

 NEWTON Space Stations

  Willy Ley_The Birth of the Space Station.htm

  Willy Ley_The Birth of the Space Station_Noordnung's Wohnrad.png

 VAR Life before Darwin (Bestiaries - BEM vs ET)

  Notes_Giants in Those Days_Meganthropus spoof.jpg

  Notes_How to Slay Dragons_St George and the Dragon.jpg

  Notes_The Case of the Lying Stones.html

  Notes_The Deadly Trees.html

  Willy Ley_Dragons and Hot Air Balloons.htm

  Willy Ley_Giants in Those Days.htm

  Willy Ley_Giants in Those Days_2.jpg

  Willy Ley_Giants in Those Days_4.jpg

  Willy Ley_How to Slay Dragons_1.jpg

  Willy Ley_How to Slay Dragons_3.jpg

  Willy Ley_Let's Build an Extraterrestrial.htm

  Willy Ley_Let's Build an Extraterrestrial_02.jpg

  Willy Ley_Let's Build an Extraterrestrial_04.jpg

  Willy Ley_Let's Build an Extraterrestrial_06.jpg

  Willy Ley_Midnight Marvels.htm

  Willy Ley_Midnight Marvels_02.jpg

  Willy Ley_Midnight Marvels_04.jpg

  Willy Ley_Midnight Marvels_06.jpg

  Willy Ley_Midnight Marvels_08.jpg

  Willy Ley_Midnight Marvels_10.jpg

  Willy Ley_Midnight Marvels_12.jpg

  Willy Ley_Midnight Marvels_14.jpg

  Willy Ley_Midnight Marvels_16.jpg

  Willy Ley_The Birth of Superstition.htm

  Willy Ley_The Birth of Superstition_2.jpg

  Willy Ley_The Bumblebee Bugler.jpg

  Willy Ley_The Case of the Lying Stones_1.jpg

  Willy Ley_The Case of the Lying Stones_3.jpg

  Willy Ley_The Supersonic Bot Fly.htm

 VAR Life on other Worlds

  Willy Ley_Extra Solar Planets and Intelligence (Ley's Equation).html

  Willy Ley_Extraterrestral Bacteria_1a.jpg

  Willy Ley_Extraterrestral Bacteria_2a.jpg

  Willy Ley_Extraterrestral Bacteria_3.jpg

  Willy Ley_Extraterrestral Bacteria_5.jpg

  Willy Ley_Other Life than Ours.html

 VAR Symbolic Language and SETI

  Notes_The Intractable Prime Number (Goldbach Theorem).htm

  Notes_The Written Word.htm

  Willy Ley_How Will You Talk to the Martians_1.jpg

  Willy Ley_How Will You Talk to the Martians_3.jpg

  Willy Ley_The Intractable Prime Number.htm

  Willy Ley_The Island of the Stone Heads_1.jpg

  Willy Ley_The Island of the Stone Heads_3.jpg

  Willy Ley_The Island of the Stone Heads_5.jpg

  Willy Ley_The Island of the Stone Heads_7.jpg

  Willy Ley_The Island of the Stone Heads_Ahu Tongariki.jpg

  Willy Ley_The Written Word_1.jpg

  Willy Ley_The Written Word_3.jpg

 VAR Useful Knowledge for SF Writers

  Notes_Human Ultraviolet Vision.html

  Notes_Seeing Stars in Broad Daylight.html

  Willy Ley_Amne Machin.htm

  Willy Ley_Henri Moissan's Synthetic Diamonds.htm

  Willy Ley_Human Ultraviolet Vision_Caltha palustris_uv.jpg

  Willy Ley_Lost Messier Objects.htm

  Willy Ley_Red Shift.htm

  Willy Ley_Scorched in the Thermosphere.jpg

  Willy Ley_The Iron Pillar of Dehli.htm

 WLEY FYI in Retrospect and Outlook

  Willy Ley_The World in 2052.htm

  Willy Ley_Thirteen Years of FYI.htm

 WLEY Language and Notation

  Notes_One Planet, One Language.htm

  Willy Ley_The Early Days of the Metric System.htm