Flight Check

Recorded celestial movements

Built Great Pyramid aligned to stars

Used star clocks in tombs

Supported geocentric theory

Proposed heliocentric model

Calculated Earth's circumference

Created star catalog; discovered precession

Published the Almagest; geocentric model

Founded the discipline of algebra; systemized work of Ptolemy

Created the Zij-i Sultani star catalog; calculated the sidereal year

Birth of astronomer who formulated heliocentric theory

Published De revolutionibus orbium coelestium

Birth of scientist who described laws of planetary motion

Built an astronomical telescope

Published Starry Messenger; discovered Jupiter's moons

Published the Dialogue; furthered heliocentrism debate

Boyle's Law: pressure-volume relationship for gases (constant temp)

Developed ideas of gravity

Created method of fluxions (calculus)

Published Principia Mathematica

Passed the Longitude Act

Built H1 marine chronometer

Published Hydrodynamica; introduced Bernoulli's Principle

Euler equations of fluid motion (ideal fluids)

Completed H4 chronometer

Charles's Law for gases

Popularized caloric theory of heat

Disproved caloric theory (friction experiment)

Gay-Lussac's Law: pressure-temperature in gases

Invented the Stirling engine; closed-cycle heat engine with high efficiency

Avogadro's hypothesis; molecular explanation for gases

Introduced viscosity in fluid motion equations (Navier–Stokes)

Carnot cycle; groundwork for 2nd Law of Thermodynamics

Expressed the ideal gas law

Measured parallax of Alpha Centauri (first stellar parallax)

Mechanical equivalent of heat, First Law of Thermodynamics

Derived full Navier–Stokes equations (viscous flows)

Proposed absolute temperature scale (Kelvin)

Defined entropy; formalized Second Law of Thermodynamics

Expanded on Second Law and conservation of energy

Developed the kinetic theory of gases

Statistical kinetic theory; Maxwell-Boltzmann distribution

Formally introduced the concept of entropy

Statistical interpretation of entropy

Reynolds Number for fluid flow (laminar/turbulent transition)

Invented the de Laval steam turbine and nozzle, essential for modern steam engines and rocket propulsion

Birth of spaceflight pioneer; published rocket science books 1923

Introduced Quantum Theory

Proposed liquid-fueled rockets

First powered flight

Introduced concept of boundary layer

Formulated the Third Law of Thermodynamics

Proved existence of galaxies outside Milky Way

Proposed the Hohmann Transfer

First liquid-fueled rocket launch

Discovered universe expansion (Hubble's Law)

Invented PTFE (Teflon)

Invented Velcro (hook-and-loop fastener)

First successful V-2 rocket launch

Proposed concept of geostationary satellites

Invented the Whipple Shield (space debris)

Invented integrated circuit (microchip)

Proposed blunt-body reentry concept

Launched Sputnik 1: first artificial satellite

Launched Sputnik 2: Laika, first animal in space

Luna 2: First human-made object to impact Moon

First demonstration of ion engine

Developed space freeze-drying process for astronaut food

Developed Multi-Layer Insulation (MLI): thermal protection space blankets for spacecraft and satellites

First human in space

First American to orbit Earth

Syncom 3: World's first geostationary communications satellite; broadcast 1964 Tokyo Olympic Games

First human spacewalk (EVA)

Luna 9: first soft landing on Moon, sent first surface photos

Developed memory foam (viscoelastic polyurethane)

Apollo 8: first humans to orbit Moon

Developed portable battery-powered tools for Apollo lunar missions

Apollo 11: first humans land on Moon

Advanced aerospace ceramics developed for reentry protection (Space Shuttle thermal tiles, engines, structural components)

Developed scratch-resistant polycarbonate coatings for astronaut visors

Apollo 13 mission

Mariner 10: first Mercury flyby; also flew by Venus

Developed smoke detector for Skylab

Launched Helios 1 solar probe (Germany collaboration)

Developed portable water/ion exchange purification systems for space

Developed studless winter tires using space polymer research

Developed shock-absorbing athletic soles

Launched Voyager 2 (August 20) and Voyager 1 (September 5) on grand tour of outer planets

ISEE-3/ICE: First comet flyby (Giacobini-Zinner, 1985) and solar wind research

Voyager 1: Closest approach to Jupiter (March 5); Voyager 2: Jupiter flyby (July 9)

Expanded Landsat Earth observation satellite program

Voyager 1: Closest approach to Saturn (November 12, 1980); Voyager 2: Saturn flyby (August 25, 1981)

Deployed Canadarm on Space Shuttle

Launched international satellite-aided search and rescue (SAR) program

Giotto: First close-up comet nucleus images (Halley's Comet)

Voyager 2: Uranus flyby (January 24); only spacecraft to visit Uranus

Ceramic invisible braces developed as spinoff

Voyager 2: Neptune flyby (August 25); only spacecraft to visit Neptune

Galileo orbiter: First to orbit Jupiter; studied moons & magnetosphere (1989-2003)

Galileo: First asteroid flyby Gaspra (1991), first asteroid moon discovery at Ida (Dactyl, 1993)

NEAR Shoemaker: First orbit/landing on asteroid (Eros) 1996-2001

Launched Cassini–Huygens: studied Saturn and landed probe on Titan (2005)

Launched the International Space Station (first module Zarya)

Founded as private reusable rocket company; flew New Shepard suborbital (2015+), developing New Glenn orbital launcher

Launched GRACE twin satellites: gravitational changes from space

Founded by Elon Musk

First CubeSat launched (June 2003)

Developed the Super Soaker while working with NASA/military

Founded for commercial suborbital spaceflight; first private passenger flights in 2021; focus on space tourism & reusability

Rosetta/Philae: First spacecraft to orbit/land on a comet nucleus (67P, 2014) 2004-2016

Huygens probe lands on Titan (carried by Cassini)

Stardust: Returned comet dust 2006 (from Wild 2); first interstellar dust samples collected and returned

New Horizons: Launched 2006, Pluto flyby July 14, 2015, Arrokoth (Kuiper Belt object) flyby January 1, 2019. Still operational

Hayabusa: Launched May 9, 2003, returned Itokawa sample June 13, 2010

First Falcon 9 rocket launch

Juno orbiter: Launched August 5, 2011, arrived at Jupiter July 4, 2016

Voyager 1: First human-made object to enter interstellar space (August 25)

Hayabusa2: Launched December 2014, returned Ryugu samples December 2020

Scottish CubeSat launch (UKube-1, July 2014)

MESSENGER: End of first Mercury orbital mapping mission

OSIRIS-REx: Launched 2016, collected sample 2020, returned to Earth 2023

Maiden flight of Falcon Heavy rocket

Voyager 2: Enters interstellar space (November 5), after flybys of four gas giants; continues transmitting data beyond heliopause

Announced Project Kuiper, a global broadband satellite constellation for internet access

Began Starlink global broadband satellite rollout

Demonstrated closed-loop life support and in-orbit farming

Began Lunar Gateway and Artemis lunar initiatives

Launched the James Webb Space Telescope (JWST)

Announced Orbital Reef, a planned commercial space station as a successor to the ISS

Produced crystallized HIV drug in orbit

First commercial space stations under development/planned deployment

Proposed space-based data centers by major corporations/agencies

Planned Mars program with Starship