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Rockets

  • Ablatives (Henry Spencer)
  • Aerospikes (Henry Spencer; Ben Muniz; Jeff Greason)
  • Cold steel's brittleness (Henry Spencer)
  • Chamber materials (Dani Eder; Henry Spencer)
  • Chamber pressure (Doug Jones; Henry Spencer)
  • Combustion instability (Doug Jones; Henry Spencer)
  • Deep throttling (Henry Spencer)
  • Detonation rocket (Jordin Kare)
  • Efficiency (Bruce P. Dunn; Henry Spencer)
  • Engine cycles (Doug Jones)
  • Engine reliability (Jeff Greason)
  • Engine reusability (Henry Spencer)
  • Engine temperatures (Gary Hudson)
  • Exhaust backflow (Henry Spencer)
  • Exhaust color (Doug Jones; Henry Spencer)
  • Expander cycle (Henry Spencer; Jim F. Glass)
  • Hybrids (Jeff Greason; Bevin McKinney; Bruno Berger; Henry Spencer)
  • Ignition (Paul F. Dietz; Doug Jones; George Herbert; Henry Spencer)
  • Improvements (Henry Spencer; Jeff Greason)
  • Injectors (Henry Spencer)
  • Ion engines (Henry Spencer)
  • Altitude compensation using a jet engine (Gary Hudson)
  • Jet packs (Jordin Kare; Bill Higgins)
  • Liquid engine failure (Henry Spencer)
  • Liquid vs solid (Bruce Dunn)
  • LOX cooling (Doug Jones)
  • Lunar module throttling (Henry Spencer)
  • Metal autoignition (Andrew Higgins; Doug Jones; Henry Spencer; Jeff Greason)
  • Niobium nozzles (Jeff Greason)
  • Nozzles (Henry Spencer; Jim Glass)
  • Nuclear-thermal rockets (Paul F. Dietz; Henry Spencer; James A Davis)
  • Overexpansion (Henry Spencer)
  • Piston pumps (Jordin Kare)
  • Pogo oscillations (Henry Spencer)
  • Pressure-fed rockets (Gary Hudson)
  • Pressurization (Henry Spencer)
  • Primitive rockets (George William Herbert; Henry Spencer; James A Davis; Tom Billings)
  • Pumps (Jordin Kare)
  • Radiative cooling (Henry Spencer)
  • Reinforced propellant (Dani Eder)
  • Engine restart (Henry Spencer)
  • The RL10 (Bruce Dunn; Gary Hudson; Henry Spencer)
  • Rocket design books (Henry Spencer)
  • Rocket noise (Jeff Greason; Doug Jones; Gary Hudson; Henry Spencer)
  • Rocket steering (Henry Spencer; Jordin Kare)
  • Russian engines (Paul F Austin)
  • Shuttle exhaust (Henry Spencer)
  • Inefficiencies of small rockets (Dani Eder; Jordin Kare)
  • Specific impulse (Henry Spencer)
  • The SSME (Henry Spencer; Bruce Dunn)
  • Staged combustion (Henry Spencer)
  • Telescoping nozzles (Henry Spencer)
  • Testing (Henry Spencer)
  • Thermal rockets (Doug Jones)
  • Turbopumps (Paul F. Dietz; Bruce Dunn; Henry Spencer)
  • X1 engine (Doug Jones)

    Rocket fuels

  • Acetylenes (Bruce Dunn; Henry Spencer)
  • Aluminum as a fuel (Jordin Kare)
  • Carbide fuel (Jeff Greason)
  • Carbon monoxide (Paul F. Dietz)
  • Chilled fuel (Bruce Dunn; Henry Spencer)
  • ClF5 (Henry Spencer)
  • Exhaust and the ozone layer (Henry Spencer)
  • Flame temperatures (Henry Spencer)
  • Fluorine (Bruce Dunn; Henry Spencer)
  • Fuel costs (Bruce Dunn; Henry Spencer)
  • Fuel ratio (Henry Spencer)
  • The reason for running fuel-rich (Henry Spencer)
  • Fuel table (Bruce Dunn)
  • Hydrazine (Doug Jones; Henry Spencer)
  • Hydrazinium nitroformate (Bruce Dunn)
  • Hydrogen delta-V (Henry Spencer; Mitchell Burnside Clapp)
  • Hydrogen (Gary Hudson; Henry Spencer)
  • Hypergolic (Henry Spencer)
  • The book "Ignition", by Clark (Henry Spencer)
  • Inhibited nitric acid (Bruce Dunn)
  • Kerosene (Jeff Greason; Henry Spencer)
  • Li-F-H (Jeff Greason; Henry Spencer)
  • Liquid hydrogen (Henry Spencer)
  • LOX (George Herbert; Henry Spencer; Tom Perigrin)
  • Lunar fuels (Henry Spencer)
  • MAPP (Bruce Dunn)
  • Monopropellants (Henry Spencer)
  • Nitric acid (Jeff Greason; Doug Jones; George William Herbert; Henry Spencer)
  • Nitrous oxide (Henry Spencer)
  • NO2 (Henry Spencer)
  • Ozone (Bill Higgins; George Herbert; Henry Spencer)
  • Hydrogen Peroxide (George Herbert; Henry Spencer; Jeff Greason; Rick Ballard; Bruce Dunn; Jordin Kare)
  • Propane (Paul F. Dietz; Bruce Dunn; Henry Spencer)
  • Propargyl alcohol (Bruce Dunn)
  • Regenerative coolants (Jeff Greason; Gary Hudson; Henry Spencer)
  • Storables (Henry Spencer; Jim Davis)
  • Thermodynamic data references (Henry Spencer)
  • TNT (Larry Curcio; Doug Jones; Gary Hudson; Bevin McKinney)
  • UDMH (Doug Jones)
  • Xenon (Paul F. Dietz)

    Spacecraft

  • Airbag landing (Henry Spencer)
  • Airlocks (Henry Spencer)
  • Analog computers (Henry Spencer)
  • Artificial gravity (Theodore W. Hall; Charles R Martin; Henry Spencer)
  • ASAT (George Herbert; Henry Spencer)
  • Backup computers (Henry Spencer)
  • Beryllium (Henry Spencer)
  • Burn-in (Henry Spencer)
  • Capsule smell (Henry Spencer)
  • Cassini (Henry Spencer)
  • Catalyst bed heaters (Brett Buck)
  • Cats landing on feet; orientation changes in space (David M. Palmer; Henry Spencer)
  • CCD shielding (Jordin Kare)
  • Clementine (Dani Eder; Henry Spencer; Jordin Kare)
  • Cold-welding (Henry Spencer)
  • Comsat eclipses (Phil Karn; Henry Spencer)
  • Comsat lifetime (Henry Spencer)
  • Comsats (Henry Spencer)
  • Conductive tether (Dani Eder)
  • Cost per pound (Dani Eder)
  • Crasher stages ("Doug"; Henry Spencer)
  • Debris shielding (Dani Eder; Henry Spencer)
  • Deep Space Network (Henry Spencer)
  • Dyna-Soar (Henry Spencer)
  • Explosive bolts (Jordin Kare; Kim Keller; Henry Spencer)
  • Flight software (Henry Spencer)
  • Galileo (Henry Spencer)
  • Gimbal lock (Henry Spencer)
  • GPS (Dani Eder; Henry Spencer; Phil Karn; Jordin Kare)
  • Gyros (Brett Buck; Henry Spencer; Jordin Kare)
  • Hard disks in vacuum (Henry Spencer; Jordin Kare)
  • Helium cooling (Doug Jones; Henry Spencer)
  • Hubble (Henry Spencer)
  • Hydrogen's flammability (Doug Jones)
  • Hydrogen storage (Bruce Dunn; Henry Spencer; Steve Willner)
  • Inflatable space station (Henry Spencer)
  • Interfaces (Henry Spencer)
  • Ion engine (Bruce Dunn; Dani Eder)
  • ISS computers (Dani Eder; Josh Hopkins)
  • ISS (Henry Spencer)
  • Laser communication (Henry Spencer; Jordin Kare; Mark Adler)
  • Leak checking (Henry Spencer)
  • Magnetically clean (Henry Spencer)
  • Mars Observer (Henry Spencer)
  • Mil-spec (Henry Spencer)
  • Mir (David K Cornutt; James Oberg)
  • MPL (Brett Buck; Frank Crary; Geoffrey A. Landis; Henry Spencer; James Oberg)
  • Navigation (Henry Spencer; Mary Shafer)
  • Nuclear ASAT (Allen Thomson)
  • Orbital assembly (Henry Spencer)
  • Orbital attitude axes (John Prussing)
  • Passive cooling (Henry Spencer)
  • Photo calibration grid (Henry Spencer)
  • Radiation-hard electronics (Jordin T. Kare; Henry Spencer)
  • Radiation pressure (Phil R. Karn)
  • Radiation shielding (Henry Spencer)
  • Reactors in space (Henry Spencer)
  • Recycling (Henry Spencer)
  • Regenerative fuel cells (Jordin Kare)
  • Reprogrammable spacecraft (Henry Spencer)
  • Rigid tube manufacture in space (Henry Spencer)
  • Safety factors (Henry Spencer)
  • Satellite communication links (Henry Spencer)
  • Satellite nondecay (Allen Thomson)
  • Satellite pointing (Dani Eder)
  • Satellite tracking (Henry Spencer)
  • SDI (Doug Jones; Henry Spencer)
  • Skylab (Henry Spencer)
  • Solar cells (Dani Eder; Doug Jones; Henry Spencer; Geoffrey Landis)
  • Solar dynamic power (Henry Spencer)
  • Solar power satellites (Dani Eder; Henry Spencer; Jordin Kare)
  • Solar sails (Henry Spencer; Jordin Kare)
  • Space electronics (Henry Spencer; Phil Karn)
  • Space lubricants (Henry Spencer)
  • Space nukes (Henry Spencer)
  • Space pen (Henry Spencer)
  • Space station (George William Herbert; Henry Spencer; James Oberg)
  • Space toilet (Henry Spencer)
  • Spin axes (Henry Spencer)
  • Spin (Henry Spencer)
  • Spot imagers (Henry Spencer)
  • Star trackers (Henry Spencer; Jordin Kare)
  • Stirling engines (Jordin Kare)
  • Tethers (Henry Spencer)
  • Thermionic conversion reactors (Henry Spencer)
  • Urine recycling (Doug Jones; James Oberg)
  • Voyager datalink numbers (David Smith; Phil Karn)
  • Water recycling (Henry Spencer)

    Apollo

  • Apollo 13 (Henry Spencer)
  • The Apollo 1 fire (Henry Spencer)
  • Apollo 6 (Henry Spencer)
  • Redoing Apollo today (Henry Spencer)
  • Apollo books (Henry Spencer)
  • Apollo cameras (Dani Eder)
  • Apollo computer (David Smith)
  • Apollo crew size (Henry Spencer)
  • Apollo extensions (Henry Spencer)
  • Apollo heatshield (Henry Spencer)
  • Apollo's innovations (Henry Spencer)
  • Apollo landing sites (Henry Spencer)
  • Apollo lightning hit (Henry Spencer)
  • Apollo navigation (Henry Spencer)
  • Apollo staging (Henry Spencer)
  • Apollo cabin atmosphere (Henry Spencer)
  • Apollo capsule reuse (Henry Spencer)
  • CM-SM connection (Henry Spencer)
  • Electroluminescent displays (Henry Spencer; OM; "Dave")
  • Free-return trajectories (Henry Spencer)
  • Gemini (Henry Spencer)
  • Saturn V launch flame-belch (Henry Spencer)
  • Launch escape tower (Henry Spencer)
  • Lifting reentry (Henry Spencer; James Summers)
  • Lunar Module landing (Henry Spencer)
  • Lunar Module (Henry Spencer)
  • Lunar Module mounting (Henry Spencer)
  • Mission letters (Henry Spencer)
  • Quarantine (Henry Spencer)
  • Ranger (Henry Spencer)
  • Self destruct (Henry Spencer)
  • Saturn V roll after takeoff (Henry Spencer)
  • Water landing (Henry Spencer)

    Space Shuttle

  • Challenger (George Herbert; Henry Spencer; James Oberg)
  • Challenger risk briefings (Mary Shafer)
  • Enterprise (Henry Spencer)
  • External Tank (Bruce Dunn; Henry Spencer; Dani Eder)
  • External Tank insulation (Henry Spencer)
  • Forward firemen (Henry Spencer)
  • Fuel cell tanks (Dani Eder)
  • Getaway special cans (Phil R. Karn)
  • J2S engines (Gary Hudson)
  • Launch abort (Joe Pistritto)
  • MMUs (Henry Spencer)
  • Orbiter debris hits (Henry Spencer)
  • O-rings (Henry Spencer)
  • PIO (Mary Shafer)
  • Replacement shuttle costs (Dani Eder)
  • Taking the Shuttle to 51 degrees (Henry Spencer; James Oberg)
  • Shuttle abort (Gary Hudson; Henry Spencer; Mary Shafer)
  • Shuttle alternatives (Henry Spencer)
  • Shuttle altitude (Henry Spencer)
  • Shuttle bay doors (James Oberg)
  • Shuttle book (Bruce Dunn; Henry Spencer)
  • Shuttle-Centaur (Henry Spencer)
  • Shuttle control (Henry Spencer; Mary Shafer)
  • Shuttle cooling (Henry Spencer)
  • Shuttle cost (Henry Spencer)
  • Shuttle crossrange ability (Henry Spencer; James Oberg)
  • Shuttle-C (Dani Eder; Henry Spencer)
  • Shuttle development (Henry Spencer)
  • Shuttle emergency landing sites (Henry Spencer)
  • Shuttle escape ball (Henry Spencer)
  • Shuttle escape (Henry Spencer)
  • Shuttle hatch lock (Fred Leslie; James Oberg)
  • Shuttle landing (Henry Spencer)
  • Shuttle launch costs (Henry Spencer)
  • Shuttle life (Henry Spencer)
  • Shuttle maneuvering (Henry Spencer)
  • Shuttle piloting (Henry Spencer)
  • Shuttle processing (Kim Keller; Henry Spencer)
  • Shuttle satellite launch (Phil R. Karn)
  • Shuttle security (Henry Spencer)
  • Shuttle supports (Dani Eder; Henry Spencer)
  • Shuttle tiles (Dani Eder)
  • Shuttle tires (Henry Spencer)
  • Shuttle trajectory (Dani Eder)
  • SRB failure (Dani Eder)
  • SRB fuel (Henry Spencer)
  • SRB ignition (Phil Karn; Henry Spencer)
  • SRB reuse (Henry Spencer)
  • SRB shutdown (Henry Spencer)
  • SRBs (Dani Eder; Henry Spencer; Dennis R. Jenkins; Josh Hopkins)
  • SSME ignition (Henry Spencer)
  • TDRS (Henry Spencer)

    Launchers

  • Aerodynamics books (Jeff Greason)
  • Airbreathing launchers (Henry Spencer)
  • Atlas (Gary Hudson; Henry Spencer)
  • Balloon tanks (Henry Spencer)
  • Buran (Henry Spencer; James Oberg)
  • Cape Canaveral (Henry Spencer)
  • Counterrotating propellors (Henry Spencer)
  • Cryo tank filling (Henry Spencer)
  • DC-X (Frank Crary; Gary Hudson; Henry Spencer; Jordin Kare)
  • Destruct charges (Henry Spencer)
  • Ejection (George William Herbert; Henry Spencer; Mary Shafer)
  • Escape tower (Henry Spencer; Thomas L. Billings)
  • Expendable tanks (Henry Spencer)
  • Flame trench (Dani Eder)
  • Fuel tank scaling laws (Henry Spencer)
  • Fuel tanks (Jeff Greason; Doug Jones)
  • Guidance algorithms (Henry Spencer; MJessick@aol.com "Matt")
  • Horizontal vs. vertical landing (Henry Spencer; Mitchell Burnside Clapp)
  • Jet-powered first stage (Dani Eder)
  • Lander legs (Henry Spencer)
  • Landing crater (Henry Spencer)
  • Landing gear weight (Gary Hudson; George Herbert; Henry Spencer)
  • Landing (Doug Jones; Henry Spencer)
  • Launcher testing (Jeff Greason; Henry Spencer)
  • Launch towers (Henry Spencer)
  • Launch trajectory (Henry Spencer)
  • Medical lifeboat (Henry Spencer)
  • Missile heritage (Henry Spencer)
  • Moon exploration/launcher book (Henry Spencer)
  • Parking orbit (Henry Spencer)
  • Personal reentry (parachute from orbit) (Henry Spencer)
  • Phoenix (Dani Eder)
  • Reentry (Jeff Greason; Andrew Higgins; Henry Spencer)
  • Refractory metal skins (Henry Spencer)
  • Reliability (Allen Thomson; Henry Spencer)
  • Rocket spin-stabilization (Henry Spencer)
  • Roton (Gary C. Hudson; Jeff Greason; Bevin McKinney; Doug Jones; Henry Spencer)
  • Saturn I (Henry Spencer)
  • Saturn naming (Henry Spencer)
  • Saturn variable mixture (Henry Spencer)
  • Saturn V failure (Henry Spencer)
  • Saturn V guidance (Henry Spencer)
  • Saturn V preparation (Henry Spencer)
  • Saturn V (George Herbert; Henry Spencer; Jim Scotti)
  • Scramjets (Henry Spencer)
  • Space plane (Henry Spencer)
  • SSTO (Single Stage To Orbit) (Dani Eder; Henry Spencer)
  • Stability (Jeff Greason; George Herbert)
  • Staging (Henry Spencer)
  • Stagnation temperature reference (Jeff Greason; John Hare)
  • Trajectory (Henry Spencer)
  • US launcher summary (Henry Spencer)
  • V3 (Henry Spencer)
  • Vertical takeoff (Henry Spencer)
  • Water cooled reentry (Gary Hudson)
  • Winged Saturn (Dani Eder)
  • X15 (Jim Davis; Henry Spencer; James A Davis; Mary Shafer)
  • X-29 (Henry Spencer)
  • X33 (Henry Spencer; Robert I. Baumgartner; Jeff Greason; George Herbert; Henry Spencer; Mitchell Burnside Clapp)
  • Zenit (Allen Thomson; Henry Spencer)

    Miscellaneous

  • Aerogels (Jordin Kare)
  • Airplane economics (Jeff Greason)
  • The "Atomic Cannon" (Doug Jones)
  • Military aviation attack height (Henry Spencer)
  • Arizona missile silo museum (Bruce Dunn)
  • B52s (Henry Spencer)
  • Babbage (Henry Spencer)
  • Betacloth (fiberglass clothing) (Henry Spencer)
  • "Billion" (Henry Spencer)
  • Cancer rates (Henry Spencer)
  • Centrifugal force from the Earth's rotation (Henry Spencer)
  • Concorde (Henry Spencer)
  • Cousteau (Henry Spencer)
  • Crustal uranium (George William Herbert)
  • The book "Dark Sun" (Dwayne Allen Day)
  • Dollar bills (Doug Jones)
  • Duct tape (Henry Spencer)
  • The Dvorak keyboard (Paul F. Dietz; Henry Spencer)
  • Earthquakes (George Herbert)
  • Eyewitness reports (Henry Spencer)
  • Falling mammals (Henry Spencer)
  • Fighter canopies (Henry Spencer)
  • Glass types (Henry Spencer)
  • Gravity aberration (Henry Spencer)
  • Harrier (Henry Spencer)
  • Hawaii (Henry Spencer)
  • Heavy airlift (George William Herbert; Henry Spencer)
  • Heavy water (Paul Dietz)
  • High altitude balloon (Doug Jones; Henry Spencer)
  • Himalayas (Henry Spencer)
  • Hydrocephalics (David Palmer)
  • Making ice in the desert (Henry Spencer)
  • Interstates (Henry Spencer; Mary Shafer)
  • IR countermeasures (Henry Spencer; Mary Shafer)
  • Light bulbs (Henry Spencer)
  • Breathing liquids (Henry Spencer)
  • Liquid helium (Henry Spencer)
  • Little Boy (Henry Spencer)
  • Longitude (Henry Spencer)
  • Metals' vapor pressures (Paul F. Dietz)
  • Metric prefixes (Henry Spencer)
  • Microsoft (Henry Spencer)
  • Naval automation (George William Herbert)
  • Newton quote (Henry Spencer)
  • Night vision (Henry Spencer)
  • Nuclear detection (Paul F. Dietz)
  • Nuclear-powered bombers (Henry Spencer)
  • Nuclear torpedo (Henry Spencer)
  • Old low-radiation steel (Henry Spencer)
  • Parafoils (Jordin Kare)
  • Project HARP (Bruce Dunn)
  • Reactor coolants (Paul F. Dietz; Henry Spencer)
  • Season lag (Henry Spencer)
  • Shaped charges (Andrew Higgins)
  • Ship economics (George Herbert)
  • Smallpox (Henry Spencer)
  • Social Security (Henry Spencer)
  • Sonic boom elimination (Jeff Greason; Henry Spencer; James A Davis; Rand Simberg; Steinn Sigurdsson)
  • Sonic booms (Karl Swartz; Mary Shafer; Henry Spencer)
  • Space debris (Henry Spencer; Phil Karn)
  • In-space nuclear detonations (Henry Spencer)
  • SR71 (George Herbert; Henry Spencer; Mary Shafer)
  • The standard kilogram (Henry Spencer)
  • Sterile cockpit (Mary Shafer)
  • Tall buildings (George William Herbert)
  • Airplane thrust reversers (Henry Spencer; Mary Shafer)
  • Unicorns (Henry Spencer)
  • Units (Henry Spencer)
  • WD40 (Henry Spencer)
  • White Sands (Henry Spencer; Mary Shafer; Steve Wachowski)
  • X-15 reliability experience (Henry Spencer)
  • Exotics

  • Antimatter (Gordon D. Pusch; Henry Spencer)
  • Antimatter bombs (Gordon D. Pusch)
  • Antimatter storage (Bill Higgins)
  • Bubbleworld (Dani Eder)
  • Buckytubes (Henry Spencer)
  • Bussard buzz-bomb (Jordin Kare)
  • Bussard Ramjet (George Herbert; Henry Spencer)
  • Carbon fiber (Dani Eder)
  • Carbonyl process applied to asteroids (Andrew Case)
  • Cycling spacecraft (Doug Jones)
  • Fusion (Gordon D. Pusch; Henry Spencer; Paul F. Dietz)
  • Gamma ray laser prospects (Jeff Greason)
  • Gas gun explosive (Andrew Higgins)
  • Gun launch (Andrew Higgins; Bruce Dunn; Doug Jones; George Herbert; Dani Eder; Henry Spencer)
  • Gun velocity (Andrew Higgins; Bruce Dunn)
  • Helium-3 (Dani Eder; Paul F. Dietz; Henry Spencer)
  • Interstellar debris (Gordon D. Pusch)
  • Interstellar gun (Dani Eder)
  • Interstellar travel (Henry Spencer)
  • Laser launch (Henry Spencer; Jordin Kare)
  • Light gas gun (Andrew Higgins; Dani Eder; Jordin Kare)
  • Magnetic deceleration (Doug Jones)
  • Mass drivers (Andrew Higgins; Doug Jones; Henry Spencer)
  • Nuke-powered cannon (B. McKinney)
  • Orion (Paul F. Dietz; Andrew Higgins; Henry Spencer)
  • Project Pluto (Bill Higgins; Henry Spencer)
  • Railguns (Bruce Dunn)
  • Relativistic debris shields (Henry Spencer)
  • Ringworld (Henry Spencer)
  • Skyscrapers (George William Herbert)
  • Sling launcher (Andrew Higgins)
  • Stable plasma (Jordin Kare)
  • Tethers (Dani Eder; Jordin Kare; Hans Moravec)
  • Project Thunderwell (Henry Spencer)
  • Tower launch (Geoffrey A. Landis; Dani Eder; Jordin Kare)
  • Tow rope launch (Dani Eder)

    Optics

  • Adaptive optics (Dani Eder; Jordin Kare)
  • Hubble (Geoffrey A. Landis; William H. Jefferys; Henry Spencer)
  • Mercury mirrors (Jordin Kare)
  • Optical flats (Jordin Kare)
  • Refractor telescopes (Jordin Kare)

    Orbits

  • Aerobraking (Dani Eder)
  • Astronomy books (Henry Spencer)
  • Direct ascent (Henry Spencer)
  • GEO launch windows ("Burns")
  • Geostationary (Henry Spencer)
  • Glenn's Mercury flight orbit (James Oberg)
  • The gravitational constant (Henry Spencer)
  • Gravity assists (Henry Spencer)
  • ISS launch windows (Henry Spencer)
  • ISS's orbit (James Oberg)
  • Lagrange points (Henry Spencer)
  • Lunar orbit (Henry Spencer)
  • Mercury's orbit (Henry Spencer)
  • Moon capture by a planet (Henry Spencer)
  • The Moon's orbit (Henry Spencer)
  • The N-body problem (Henry Spencer)
  • Nodal regression (Henry Spencer; James Oberg)
  • Orbital lifetimes (Henry Spencer)
  • Orbital plane changes (Henry Spencer)
  • Orbit books (Henry Spencer)
  • Orbit definitions (Henry Spencer)
  • Orbit selection (Henry Spencer)
  • Polar orbits (Henry Spencer)
  • Precession (Henry Spencer)
  • Radiation drag (Henry Spencer)
  • Reaching the sun (Henry Spencer)
  • Resonances (Henry Spencer)
  • Spheres of influence (Henry Spencer)
  • Stopovers (Henry Spencer)
  • Orbit "pumping" with a tether (Henry Spencer)
  • Three-body problem (Henry Spencer)
  • Tidal circularization of orbits (Henry Spencer)
  • Tidal lock (Henry Spencer)
  • Trojan points (Henry Spencer)

    Politics, Society

  • Accidents (Henry Spencer)
  • Alligators (Jordin Kare)
  • Amundsen (Henry Spencer; Paul F. Dietz)
  • Apollo (Henry Spencer)
  • Archimedes (Henry Spencer)
  • Architects (Henry Spencer)
  • Astronauts (Henry Spencer; Jim Scotti; Mary Shafer)
  • The Avro Arrow (Henry Spencer)
  • Bidding procedures (Dani Eder)
  • Boeing policy (Dani Eder)
  • Bolshie-bashing (James Oberg; John Coggeshall; Julie Clements; Keith Cowing)
  • Bomber Command (WW2) (Henry Spencer)
  • Bribery (Henry Spencer)
  • The GSA bureaucracy (Mary Shafer)
  • Martin Caidin's books (Henry Spencer)
  • California power (Doug Jones)
  • Cameras (Henry Spencer)
  • Capital availability (Dani Eder)
  • Carter (Henry Spencer)
  • Cassini plutonium (Bill Higgins; Charles Buckley; George Herbert; Henry Spencer; Paul Dietz)
  • Chechnya (James Oberg)
  • CN tower (Henry Spencer)
  • Coffee (Henry Spencer)
  • Columbus (Henry Spencer; Steinn Sigurdsson)
  • Comet discoverers (Henry Spencer; Richard A. Schumacher)
  • Commercial use of Usenet (Henry Spencer)
  • Competition (Jeff Greason; Henry Spencer)
  • Consulting (Jordin Kare)
  • Copernicus (Frank Crary; Henry Spencer)
  • Cost estimating (Dani Eder)
  • Costs (Doug Jones; Gary Hudson; Henry Spencer)
  • Covert launch (Allen Thomson)
  • Cronkite (James Oberg)
  • Deep space nuclear bombardment force (Henry Spencer)
  • Engine development (Jeff Greason)
  • Falling Pinto (Carolyn P. Meinel)
  • Fear (Mary Shafer)
  • Federal acquisition (Henry Spencer)
  • The Fifties (Henry Spencer)
  • Full-moon effect on havoc (Henry Spencer)
  • Galileo (Henry Spencer)
  • Germans (Henry Spencer)
  • Glenn (Henry Spencer; James Oberg; Michael Cassutt)
  • Al Gore and the Internet (George William Herbert)
  • Government contractors (Mary Shafer)
  • Government help (Henry Spencer)
  • Heinemann (Henry Spencer)
  • Heinlein (Henry Spencer)
  • Hubble delay (Henry Spencer)
  • Hurricane warning (Frank Crary)
  • Indians (Henry Spencer)
  • Iraqi supergun (Allen Thomson; Henry Spencer)
  • ITAR (Jeff Greason)
  • Japan (Henry Spencer)
  • Jury nullification (George Herbert)
  • Kazakhstan renaming (James Oberg)
  • Lyndon LaRouche (Dale Amon)
  • Launch costs (Dani Eder)
  • Leaks (Allen Thomson)
  • Lend-Lease (Henry Spencer)
  • Liberals (Henry Spencer)
  • Mars 96 (James Oberg)
  • Microgravity (Henry Spencer)
  • Military launches (Phil Karn)
  • Missile gap (Henry Spencer; James Oberg)
  • Moon race (Henry Spencer)
  • Moon treaty (Henry Spencer)
  • NACA (Jeff Greason; Henry Spencer; James Oberg)
  • NASA administrator (Henry Spencer)
  • NASA and ICs (Henry Spencer; Paul Dietz)
  • NASA censorship (Allen Thomson; James Oberg)
  • NASA information (Jeff Greason)
  • NASA lightbulb (Jordin Kare)
  • NASA (Jeff Greason; Dave Michelson; Henry Spencer; Rand Simberg; Ken Hollis)
  • NASA Russian experts (James Oberg)
  • Natives (Henry Spencer)
  • Nuclear secrets (Henry Spencer)
  • OCST (Henry Spencer)
  • Orwell (Henry Spencer)
  • Patents (Jeff Greason; Henry Spencer)
  • Patriot vs Scud (Henry Spencer)
  • Pegasus (Greg Kuperberg; Henry Spencer; Mary Shafer)
  • Private enterprise (Jeff Greason; Henry Spencer)
  • "Proprietary" (Henry Spencer)
  • Regulation (Henry Spencer; Jeff Greason)
  • RTGs (Allen Thomson; Henry Spencer)
  • Russian coverups (Henry Spencer; James Oberg)
  • Russian partnership (James Oberg)
  • Russian rocket scientists (James Oberg)
  • Russian space book (David Lednicer)
  • Sagan (Frank Crary; Geoffrey A. Landis; Henry Spencer)
  • Salvage law (Henry Spencer)
  • The destruction of the US satellite industry (Henry Spencer)
  • School stupidity (Joe Dellinger)
  • Scientific American magazine (Michael Pelletier)
  • SDI (Dani Eder; Henry Spencer; Thomas L. Billings; James Oberg)
  • Skunk Works (Henry Spencer)
  • Soviet collapse predictions (Allen Thomson)
  • Space costing (Henry Spencer)
  • Space industries (Paul F. Dietz)
  • The Space Station's budget (Dani Eder)
  • Space tourism (Henry Spencer)
  • Space treaties (Henry Spencer)
  • Technological limits (Henry Spencer)
  • Technology leakage (Jeff Greason; Henry Spencer)
  • Tsien (Andrew Higgins; Dwayne Allen Day; James Oberg)
  • TV advertisers (James Oberg)
  • UFOs and Gordon Cooper (James Oberg)
  • The Gemini 11 UFO (James Oberg)
  • Ratcsh UFO retraction (James Oberg)
  • UFOs over South America (James Oberg)
  • US citizens and laws (Henry Spencer)
  • Von Braun (Henry Spencer)
  • Weapons of mass destruction (Allen Thomson; Henry Spencer)
  • Weapons permits (George William Herbert)
  • Wen-Ho Lee (Allen Thomson)

    Science, Exploration

  • Antarctic isolation (Henry Spencer)
  • Appendicitis (Henry Spencer)
  • The asteroid belt (Henry Spencer)
  • Asteroidal ice (Henry Spencer)
  • Asteroid mining (Henry Spencer; Paul F. Dietz)
  • Asteroids (Henry Spencer)
  • Asteroid steel (Dani Eder)
  • Astronomical distance measurements (Henry Spencer; Ned Wright; Steven B. Harris)
  • Astronomical unit (Henry Spencer)
  • Biosphere II (Dani Eder)
  • Breathable atmospheres (Doug Jones; George Herbert; Henry Spencer)
  • CCDs (Henry Spencer)
  • CO2 percentages (Henry Spencer)
  • Cosmic rays (Henry Spencer)
  • Cosmic ray shielding (Henry Spencer)
  • The cosmological constant (Henry Spencer)
  • The diffraction limit (Henry Spencer)
  • The ecliptic (Henry Spencer)
  • Extinction periodicity (Henry Spencer)
  • Eye focusing (Henry Spencer)
  • Free fall (Henry Spencer)
  • Galaxies (Henry Spencer)
  • Gamma ray bursts (David M. Palmer; Paul F. Dietz)
  • G tolerance (Dani Eder; Henry Spencer; Jordin Kare; James Oberg)
  • Hard spacesuits (George Herbert)
  • High-G blackout (Henry Spencer)
  • Human advantages (Henry Spencer)
  • Human internal clock (Henry Spencer)
  • Incoming asteroids (Henry Spencer; Jim Scotti; Jordin Kare; Josh Hopkins; Paul F. Dietz; Steinn Sigurdsson)
  • Io (Henry Spencer)
  • Jupiter water (Henry Spencer)
  • Life chemicals (Henry Spencer)
  • Lunar concrete (George Herbert)
  • Magnetosphere (Henry Spencer)
  • Man in vacuum (Geoffrey A. Landis; Henry Spencer)
  • Mars colonization (Henry Spencer; James Oberg)
  • Mars crew (Henry Spencer)
  • Mars Direct (Henry Spencer)
  • Mars dust (Henry Spencer)
  • Mars exploration (Bruce Dunn)
  • Mars flows (James Oberg)
  • Fuel-making on Mars (Henry Spencer)
  • Mars landing (Henry Spencer)
  • Mars life (Geoffrey A. Landis; George Herbert; Henry Spencer)
  • Mars meteorites (Henry Spencer)
  • Mars rovers (Henry Spencer)
  • Terraforming Mars (Doug Jones; Henry Spencer)
  • Martial arts (Henry Spencer)
  • Meteorite antarctica (Henry Spencer)
  • Meteorites (Frank Crary; Henry Spencer)
  • Molecular sieves (Henry Spencer)
  • The Moon's atmosphere (Henry Spencer)
  • Moon bases (Henry Spencer)
  • The Moon's brightness (Henry Spencer)
  • Moondust (Doug Jones; George Herbert; Henry Spencer)
  • Electrolysis of lunar materials (Henry Spencer; MA Lloyd)
  • Fuel-making from the Moon (Bruce Dunn; Doug Jones; Henry Spencer)
  • Lunar ice (Henry Spencer)
  • Lunar ores (Henry Spencer)
  • The Moon's origin (Henry Spencer)
  • Moon photos (Henry Spencer)
  • Lunar roads (Henry Spencer)
  • Nemesis (Jordin Kare)
  • Neutrinos (Paul F. Dietz)
  • Nukes and the Van Allen belts (Geoffrey A. Landis; Henry Spencer; rk)
  • Nuclear waste disposal in space (Dani Eder; Henry Spencer; Jordin Kare; Paul F. Dietz)
  • Oxygen atmosphere (Paul F. Dietz)
  • "Parsec" (Henry Spencer)
  • Photosynthesis (Henry Spencer)
  • Plant efficiency (Paul Dietz)
  • Quasars (Henry Spencer)
  • Radiation belts (Bill Higgins)
  • Regolith (Henry Spencer)
  • Remote ice detection (Bill Higgins)
  • Scurvy (Henry Spencer)
  • Skinsuits (flexible spacesuits) (Doug Jones; Henry Spencer)
  • Solar flares (Kyle Miller; Frank Crary; George Herbert; Henry Spencer)
  • Solar system formation (Henry Spencer)
  • The South Atlantic Anomaly (Henry Spencer)
  • Spacesickness (Henry Spencer)
  • Spacesuits and meteoroids (Henry Spencer)
  • Spacesuits (George Herbert; Henry Spencer)
  • Spacewalks (Henry Spencer)
  • Star distance measurements (Dani Eder; Henry Spencer)
  • Stellar close encounters (Henry Spencer)
  • The Sun (Paul F. Dietz; Doug Jones; Henry Spencer)
  • Supercritical (Henry Spencer)
  • Supercritical water oxidation (Henry Spencer)
  • Supernova (Henry Spencer)
  • Surveyor strep (Henry Spencer; James Oberg)
  • Tenth planet (Rick McGeer)
  • Terraforming book (Geoffrey A. Landis)
  • Terraforming (Henry Spencer)
  • Unmanned (Henry Spencer)
  • Uranus mission (Dani Eder)
  • Van Allen belts (Henry Spencer)
  • Variable stars (Kent Budge)
  • Venus balloon (Mitchell Burnside Clapp)
  • Venus suits (Henry Spencer)
  • Venus (Paul F. Dietz; Henry Spencer)
  • Women and color sensing (Henry Spencer)
  • Zero-G fluid load (Henry Spencer)