1752 Lightning Rod
Benjamin Franklin's electricity experiments lead him to a valuable application — the lightning rod, which when placed at the apex of a barn, church steeple, or other structure, conducts lightning bolts harmlessly into the ground.

1776 Submarine 
David Bushnell's "Turtle" submerges by taking water into its tanks and reverses the process to rise. It moves by means of a hand crank propeller. The "Turtle" is used in an attack on Lord Howe's Flagship "Eagle," but attempts to attach a mine to the Eagle's hull fail. 

1790 First U.S. Patent
The United States issues its first patent to William Pollard of Philadelphia. His machine roves and spins cotton. 

1794 Cotton Gin 
Eli Whitney patents his machine to comb and deseed bolls of cotton. His invention makes possible a revolution in the cotton industry and the rise of "King Cotton" as the main cash crop in the South, but will never make him rich. Instead of buying his machine, farmers built bogus versions of their own. 

1797 Interchangeable Parts 
Eli Whitney contracts to manufacture 10,000 muskets for the U.S. Army. At the time, an entire musket would be made by a single person, without standardized measurements. Whitney divided the labor into several discrete steps and standardized parts to make them interchangeable. 

1801 Steam-Powered Pumping Station 
The Fairmount Water Works harnesses steam power to provide water for the city of Philadelphia.

1803 Spray Gun 
Dr. Alan de Vilbiss of Toledo, Ohio, invented this device to replace swabs as the method of applying medication to oral and nasal passages. 

1805 Amphibious Vehicle
Oliver Evans' "Orukter Amphibolos" dredges the waters near the Philadelphia docks. Its steam-powered engine drove either wooden wheels or a paddle wheel. Evans demonstrated his machine in Philadelphia's Center Square, where he passed the hat for money. 

1806 Coffee Pot
Coffee drinkers the world over no longer have to chew their brew. Benjamin Thompson, Count Rumford, invents a coffee pot with a metal sieve to strain away the grounds. 

1807 Steamboat 
Robert Fulton, former miniaturist and landscape painter, opens American rivers to two-way travel. His steamboat the "Clermont" travels 150 miles upstream between New York and Albany at an average speed of 5 mph. 

1813 Armored Warship
Steam power enhances military power. Robert Fulton's "Demolos" sails. At 140 ft. in length, it carries a thirty 32-pound cannon. 

1814 Plough 
Farmers had furrowed the rocky soil of New England with wooden-tipped ploughs. John Jethro Woods of Poplar Ridge, New York, creates a plough with a replaceable cast-iron tip, making farming in America easier.

1817 Erie Canal
Overland travel in the 1800s is slow and arduous. Engineers propose a plan to supplement natural water systems by digging a 363 mile canal to connect the Hudson River with Lake Erie. The "Seneca Chief" will make the inaugural run through the Erie Canal in 1825.  

1818 Profile Lathe 
Thomas Blanchard of Middlebury, Connecticut, builds a woodworking lathe that does the work of 13 men. His invention helps to lower wood prices. 

1830 Electro-magnetic Motor 
Joseph Henry, Professor of Mathematics and Natural Science at the Albany Academy, builds a motor employing the electromagnet, invented by William Sturgeon in London just five years earlier. Henry's motor has no practical use. 

1831 Reaping Machine 
The McCormick Reaper, which cut grain much faster than a man with a scythe, failed to catch on. McCormick sold the first unit around 1840; by 1844, only 50 had sold. After taking his operation to Chicago, McCormick prospered. By 1871 his company was selling 10,000 reapers per year.  

1833 Sewing Machine 
Walter Hunt invents the first lock-stitch sewing machine, but loses interest and does not patent his invention. Later, Elias Howe secures patent on an original lock-stitch machine, but fails to manufacture and sell it. Still later, Isaac Singer infringes on Howe's patent to make his own machine, which makes Singer rich. Hunt also invents the safety pin, which he sells outright for $400. 

1834 Threshing Machine 
John A. and Hiram Abial Pitts invent a machine that automatically threshes and separates grain from chaff, freeing farmers from a slow and laborious process. 

1836 Revolver 
To finance the development of his "six shooter," Samuel Colt traveled the lecture circuit, giving demonstrations of laughing gas. Colt's new weapon failed to catch on, and he went bankrupt in 1842 at age 28. He reorganized and sold his first major order to the War Department during the Mexican War in 1846, and went on to become rich. 

1837 Power Tools 
Thomas Davenport of Brandon, Vermont, is one of the first to find a practical application for the electric motor. He uses a motor he built to power shop machinery and also builds the first electric model railroad car. 

1840 Paint Tube
John Rand invents a collapsible metal squeeze tube. The container immediately hits markets in Europe, where it is used to hold and dispense artists' pigments.  

1842 Ether Anesthesia 
Crawford Williamson Long, of Jefferson, Georgia, performs the first operation using an ether-based anesthesia, when he removes a tumor from the neck of Mr. James Venable. Long will not reveal his discovery until 1849. 

1843 Vulcanized Rubber
Rubber, so named because it could erase pencil, had long been considered a waterproofing agent, but in its natural state, it melted in hot weather and froze solid in the cold. After ten years of tireless work and abject poverty, Charles Goodyear perfects his process for "vulcanizing" rubber, or combining it with sulfur to create a soft, pliable substance unaffected by temperature. 

1844 Telegraph
Samuel F.B. Morse demonstrates his telegraph by sending a message to Baltimore from the chambers of the Supreme Court in Washington, DC. The message, "What hath God wrought?," marks the beginning of a new era in communication. 

1845 False Teeth 
Cladius Ash helps Americans get a better grip on what they're eating. He creates a new type of artificial dental wear featuring individual porcelain teeth mounted with steel springs. 

1846 Cylinder Printing Press 
Richard M. Hoe creates a revolution in printing by rolling a cylinder over stationary plates of inked type and using the cylinder to make an impression on paper. This eliminated the need for making impressions directly from the type plates themselves, which were heavy and difficult to maneuver. 

1851 Crystal Palace
In a glass conservatory in London, the Great Exhibition begins. Among the 14,000 exhibits were Colt's repeating pistol, Goodyear's vulcanized rubber, and Gail Borden's meat biscuit. More than six million visitors from around the world attended. The exhibition became a model for all World Fairs to come. 

1857 Passenger Elevator
Elisha Graves Otis dramatically demonstrates his passenger elevator at the Crystal Palace Exposition in New York by cutting the elevator's cables as it ascends a 300 foot tower. Otis' unique safety braking system prevents the elevator from falling; his business prospects rise.  

1858 Burglar Alarm 
Edwin T. Holmes of Boston begins to sell electric burglar alarms. Later, his workshop will be used by Alexander Graham Bell as the young Bell pursues his invention of the telephone. Holmes will be the first person to have a home telephone. 

1859 Oil Well 
Drilling at Titusville, Pennsylvania, "Colonel" Edwin Drake strikes oil at a depth of 69.5 feet. Prior to that, oil, which had been used mostly as a lubricant and lamp fuel, had been obtained only at places where it seeped from the ground. Western Pennsylvania witnesses the world's first oil boom. 

1860 Repeating Rifle 
B. Tyler Henry, chief designer for Oliver Fisher Winchester's arms company, adapts a breech-loading rifle invented by Walter B. Hunt and creates a new lever action repeating rifle. First known as the Henry, the rifle will soon be famous as simply the Winchester. 

1862 Battle of the Ironclads 
For the first time, two armored ships battle each other at sea. The Union Monitor, designed from scratch by John Ericsson, features a two-cannon revolving turret and eight-inch plate armor. The Confederate Merrimac, a wooden hulled ship hastily outfitted with iron plates, holds it own against the Monitor. The two battle to a draw. 

1863 Roller Skates 
James Plimpton of Medford, Massachusetts, gives the world the first practical four-wheeled roller skate. This sets off a roller craze that quickly spreads across the U.S. and Europe. 

1864 Oil Pipeline 
Built in the oil fields at Pithole, Pennsylvania, Samuel van Syckel's five-mile, pump-operated pipeline made oil transport infinitely easier. No one appreciated this less than the Teamsters, who saw the pipeline as a threat to their business and destroyed it. The determined van Syckel hired a crew of "pipeline protectors" and rebuilt the pipeline. 

1865 Web Offset Printing 
William Bullock introduced a printing press that could feed paper on a continuous roll and print both sides of the paper at once. Used first by the Philadelphia Ledger, the machine would become an American standard. It would also kill its maker, who died when he accidentally fell into one of his presses. 

1867 Barbed Wire 
Lucien B. Smith of Kent, Ohio, invents the product that will close down the open cattle ranges by closing in cattle onto individual plots of privately owned land. I.L. Ellwood and Company's Glidden Steel Barb Wire will dominate the market; by 1890 the open range will be only a memory. 

1870 Pneumatic Subway 
Working in secret to hide his operation from Boss Tweed, who opposes it, Scientific American publisher Alfred Ely Beach builds a pneumatic subway under Broadway in New York. Beach's single subway car, which features upholstered chairs and chandeliers is driven along the 300 foot tunnel by a 100 horsepower blower. 

1873 Typewriter
Inspired by a Scientific American article featuring a British attempt at a typing machine, Christopher Latham Sholes invents his own. In 1873 he sells an improved prototype to Remington and Sons, gunsmiths, of Ilion, New York, who begin to mass produce the machines. Among the first works to be produced on a typewriter is Mark Twain's "Adventures of Tom Sawyer." 

1874 Structural Steel Bridge 
Captain James Buchanan Eads finishes the bridge across the Mississippi at St. Louis. Using steel supplied by Andrew Carnegie, Eads incorporates a triple arch design, with spans measuring 502, 520, and 502 feet. The construction amazes the engineering world; Eads will be the first American engineer to be awarded the Albert Medal of the Royal Society of Arts in London. 

1875 Electric Dental Drill 
George F. Green of Kalamazoo, Michigan, replaces the agony of tooth decay with the anxiety of the dental drill when he invents an electric powered device to drill teeth. 

1875 Mimeograph 
While using paraffin in an attempt to invent and improve telegraphy tape, Thomas Alva Edison discovers a way to make duplicate copies of documents instead. 

1876 Telephone 
Alexander Graham Bell patents his telephone, built with the assistance of young self-trained engineer Thomas A. Watson. Elisha Gray, who developed a similar device at about the same time, will unsuccessfully challenge Bell's patent. 

1877 Phonograph 
Working with a team of engineers at his Menlo Park, New Jersey, laboratories, Thomas Alva Edison perfects a system of sound recording and transmission. The first recording replayed is a voice saying "Mary had a little lamb its fleece was white as snow." 

1879 Incandescent Light Bulb 
Backed by $30,000 in research funds provided by investors including J.P. Morgan and the Vanderbilts, Thomas Edison perfects an incandescent light bulb. The first commercial incandescent system will be installed at the New York printing firm of Hinds and Ketcham in January, 1881. 

1880 Hearing Aid 
R.G. Rhodes improves on the ear trumpet with another primitive hearing aid. The device is a thin sheet of hard rubber or cardboard placed against teeth which conducts vibrations to the auditory nerve. 

1882 Electric Fan 
The world becomes a cooler place, thanks to the work of Dr. Schuyler Skaats Wheeler. His two-bladed desk fan is produced by the Crocker and Curtis electric motor company.  

1884 Thrill Ride 
L.N. Thompson, founder of Coney Island's Luna Park, invites the first passengers to board his new thrill ride, the roller coaster. Thompson calls his new attraction the Switchback. 

1885 Skyscraper 
After the Great Fire of 1871, Chicago has become a magnet for daring experiments in architecture. William Le Baron Jenney completes the 10-story Home Insurance Company Building, the first to use steel-girder construction; more than twenty skyscrapers will be built in Chicago over the next 9 years. 

1887 "Platter" Record
Edison's tube recording system produces distorted sound because of gravity's pressure on the playing stylus. Emile Berliner, a German immigrant living in Washington, DC, invents a process for recording sound on a horizontal disc. The "platter" record is born.  

1888 Kodak Camera 
In Rochester, New York, George Eastman introduces a hand-held box camera for portable use. The camera is pre-loaded with 100 exposure film; after shooting the photographer returns the whole camera to the manufacturer for development and a reload. 

1889 Dishwasher 
After ten years work and numerous prototypes, Mrs. WA Cockran of Shelbyville, Indiana, eases kitchen labor everywhere by producing a practicable dishwashing machine. 

1891 Peep Show 
Thomas A. Edison and William Dickson perfect their kinetoscope, a forerunner of the movie projector. Viewers watch through a small peephole as images pass between a lens and an electric light bulb at a rate of 46 frames per second. While the kinetoscope would lead directly to the development of moving pictures and the kingdom of Hollywood, Edison considered the kinetoscope as no more than a toy. 

1891 Escalator 
Jesse W. Reno, introduces a new novelty ride at Coney Island. His moving stairway elevates passengers on a conveyor belt at an angle of 25 degrees. The device will be shown at the Paris Exposition of 1900, where it is called the escalator.  

1892 Gasoline-powered Car
In a loft in Springfield, Massachusetts, brothers Frank and Charles Duryea fabricate the first gasoline-powered automobile built in the United States. It will make its first successful run on the streets of Springfield in September, 1893. 

1893 Zipper 
At the World's Columbian Exposition in Chicago, Whitcomb L. Judson introduces his clasp locker, a hook-and-eye device opened and closed by a sliding clasp. Improvements in the device by other inventors will continue; workers at B.F. Goodrich will coin the name "zipper" in 1923.

1896 Automatic Hat 
James Boyle, of Washington, DC, makes public courtesy much more convenient for the modern gentleman. His new hat tips automatically. 

1897 Player Piano 
Edwin S. Votey, patents his self-playing piano, which he calls the pianola. The instrument uses instructions recorded on perforated paper to drive a set of artificial wooden fingers poised above a piano keyboard. Later versions placed the entire mechanism inside the body of the piano, eliminating the fingers. 

1898 Submarine 
The J.P. Holland torpedo boat company launches the first practical submarine, commissioned by the U.S. Navy. The test is successful. Holland gets orders for six more. 

1901 Shaving
King Camp Gillette, former traveling hardware salesman of Fond du Lac, Wisconsin, takes the risk out of shaving with his new double-edged safety razor. By the end of 1904, he will have sold 90,000 razors and 12,400,000 blades, but he will die in 1932 with his dream of a utopian society organized by engineers unrealized. 

1902 Air Conditioning 
Working as an engineer at the Buffalo Forge Company, Willis H. Carrier designs the first system to control temperature and humidity. He will go on to found his own company, the Carrier Corporation, to produce air-conditioning equipment. 

1903 Airplane 
At Kitty Hawk, North Carolina, brothers Orville and Wilbur Wright break the powered flight barrier with their gasoline-powered "Flyer I." The first powered, sustained, and controlled airplane flight in history lasts 12 seconds. Wilbur pilots the machine. On a flight later that day, Orville will remain aloft 59 seconds and travel 852 feet. 

1908 Model T
Car maker Henry Ford introduces his Model T automobile. By 1927, when it is discontinued, 15.5 million Models T's will be sold in the U.S. Ford owes much of his success to his improved assembly line process, which by 1913 will produce a complete Model T every 93 minutes.

1911 Self Starter 
Charles F. Kettering, who developed the electric cash register while working at National Cash Register, sells his electric automobile starters to the Cadillac company. This device increases the popularity of the gasoline-powered car, which no longer needs to be started with a hand crank.  

1914 Panama Canal
After 36 years' labor, the bankruptcy of thousands of investors, and the deaths of more than 25,000 men, the Panama Canal is finished. The canal cuts the sailing distance from the East Coast to the West Coast by more than 8,000 miles. 

1917 War
U.S. troops arrive on the battlefields of Europe, where new technologies have created the bloodiest conflict in history. Armored tanks, machine guns, poisonous gas, submarines and airplanes will force military commanders to rethink traditional strategies of war.  

1919 Hydrofoil 
Alexander Grahams Bell's "Hydrodome IV" sets a world record of 70 mph for water travel. The boat weighs over 10,000 pounds and uses underwater fins to raise the hull of the boat and decrease drag between the hull and the water. 

1920 KDKA
The first regular commercial radio broadcasts begin when AM station KDKA of Pittsburgh delivers results of the Harding-Cox election to its listeners. Radio experiences immediate success; by the end of 1922, 563 other licensed stations will join KDKA. 

1921 Wirephoto 
The first electronically-transmitted photograph is sent by Western Union. The idea for a facsimile transmission was first proposed by Scottish clockmaker Alexander Bain in 1843.  

1924 Execution 
In an effort to make capital punishment more humane, the State of Nevada introduces death by gas chamber. Convicted murderer Gee John takes 6 minutes to die. 

1926 Rocket 
Robert H. Goddard, Professor of Physics at Clark University in Worcester, Massachusetts, makes the first successful launch of a liquid-fueled rocket at his aunt Effie's farm in Auburn, Massachusetts. The rocket reaches 41 ft. in altitude.

1927 Television
Philo Farnsworth demonstrates the first television for potential investors by broadcasting the image of a dollar sign. Farnsworth receives backing and applies for a patent, but ongoing patent battles with RCA will prevent Farnsworth from earning his share of the million-dollar industry his invention will create. 

1929 Frozen Food
Clarence Birdseye offers his quick-frozen foods to the public. Birdseye got the idea during fur-trapping expeditions to Labrador in 1912 and 1916, where he saw the natives use freezing to preserve foods. 

1931 Radio Astronomy 
While trying to track down a source of electrical interference on telephone transmissions, Karl Guthe Jansky of Bell Telephone Laboratories discovers radio waves emanating from stars in outer space.  

1932 Defibrillator 
Working at the research facilities at Johns Hopkins University, Dr. William Bennett Kouwenhoven develops a device for jump-starting the heart with a burst of electricity.  

1937 Chair Lift 
Skiers no longer have to climb hills to enjoy their sport. Engineers from the Union Pacific Railroad build a chair lift for the Dollar Mountain resort in Sun Valley, Idaho. Dollar Mountain follows with an order for six more. 

1938 Nylon 
A team of researchers working under Wallace H. Carothers at E.I. du Pont de Nemours & Company invents a plastic that can be drawn into strong, silk-like fibers. Nylon will soon become popular as a fabric for hosiery as well as industrial applications such as cordage.  

1939 Digital Computer
John Atanasoff and Clifford Berry of Iowa State College complete the prototype of the first digital computer. It can store data and perform addition and subtractions using binary code. The next generation of the machine will be abandoned before it is completed due to the onset of World War II. 

1940 Jeep
Karl K. Pabst of the Bantam Car. Co., Butler, Pennsylvania, produces a four-wheel drive vehicle that will become famous as the jeep. Given its name by its military designation, G.P., or general purpose, the jeep will be used for numerous transport applications throughout World War II, and will become a popular domestic vehicle after the war.  

1942 Atomic Reaction
A team working under Italian refugee Enrico Fermi at the University of Chicago produces the first controlled, self-sustaining nuclear chain reaction. This experiment and others will result in the development of the atomic bomb. 

1945 Atomic Bomb 
A team led by J.R. Oppenheimer, Arthur H. Compton, Enrico Fermi and Léo Szilard detonates the first atomic bomb at the Los Alamos Lab near Santa Fé, New Mexico. Following the tests, the United States dropped two atomic bombs on Japan -- one at Hiroshima, one at Nagasaki -- that claimed more than 100,000 lives.  

1947 Polaroid Camera 
Dr. Edwin H. Land introduces a new camera that can produce a developed photographic image in sixty seconds. Land will follow in the 1960s with a color model and eventually receive more than 500 patents for his innovations in light and plastics technologies.  

1948 Electric Guitar
Leo Fender launches the guitars that built rock and roll when he debuts his Broadcaster solid-bodied electric guitar. Later renamed the Telecaster, the guitar will become a favorite with guitar slingers worldwide.  

1951 UNIVAC 1
The Eckert and Mauchly Computer Co. of Philadelphia sells the first commercial computer, the UNIVAC 1, to the U.S. Census Bureau. The memory called up data by transmitting sonic pulses through tubes of mercury. An additional 45 UNIVAC 1 machines would eventually be sold. 

1953 Heart-lung Machine
Dr. John H. Gibbon performs the first successful open heart surgery in which the blood is artificially circulated and oxygenated by a heart-lung machine. This new technology, which allows the surgeon to operate on a dry and motionless heart, greatly increases surgical treatment options for heart defects and disease.  

1955 Nuclear Submarine
The Nautilus, the first nuclear submarine, revolutionizes naval warfare. Conventional submarines need two engines: a diesel engine to travel on the surface and an electric engine to travel submerged, where oxygen for a diesel engine is not available. The Nautilus, the first nuclear sub, can travel many thousands of miles below the surface with a single fuel charge. 

1957 Polio Vaccine 
Dr. Albert Sabin develops a polio vaccine using strains of polio too weak to cause infection but strong enough to activate the human immune system. His invention will put an end to the polio epidemics that have crippled thousands of children worldwide.  

1958 Explorer I
Three months after the Soviet Union began the Space Age by launching Sputnik, the U.S. responds by sending the Explorer I satellite into orbit. Explorer I's mission is to detect radiation; it discovers one of the Van Allen radiation belts.  

1960 Laser
Working at Hughes Research Laboratories, physicist Theodore H. Maiman creates the first laser. The core of his laser consists of a man-made ruby -- a material that had been judged unsuitable by other scientists, who rejected crystal cores in favor of various gases. 

1964 Operating System
IBM rolls out the OS/360, the first mass-produced computer operating system. Using the OS/360, all computers in the IBM 360 family could run any software program. Already IBM is a giant in the computer industry, controlling 70% of the market worldwide. 

1965 Minicomputer
Digital Equipment introduces the PDP-8, the world's first computer to use integrated circuit technology. Because of its relatively small size and its low $18,000 price tag, Digital sells several hundred units.  

1969 Moon Landing 
Millions watch worldwide as the landing module of NASA's Apollo 11 spacecraft touches down on the moon's surface and Neil Armstrong becomes the first human to set foot on the moon. President John F. Kennedy, who vowed to the world that the United States would put a human on the moon before 1970, has not lived to witness the moment. 

1970 Optical Fiber
Corning Glass announces it has created a glass fiber so clear that it can communicate pulses of light. GTE and AT&T will soon begin experiments to transmit sound and image data using fiber optics, which will transform the communications industry. 

1972 Video Game 
Pong, one of the first mass-produced video games, has become the rage. Noland Bushnell, the 28 year-old inventor of Pong, will go on to found Atari. 

1974 Barcode
The first shipments of bar-coded products arrive in American stores. Scanners at checkout stations read the codes using laser technology. The hand-punched keyboard cash register takes one step closer to obsolescence. 

1975 Microsoft
Old high school friends Bill Gates and Paul Allen form a partnership known as Microsoft to write computer software. They sell their first software to Ed Roberts at MIT, which has produced the Altair 8800, the first microprocessor-based computer. Gates soon drops out of Harvard. 

1976 Super Computer 
Cray Research, Inc. introduces its first supercomputer, the Cray-1, which can perform operations at a rate of 240,000,000 calculations per second. Supercomputers designed by Seymour Cray will continue to dominate the market; the Cray 2, marketed in 1985, will be capable of 1,200,000,000 calculations per second. 

1979 Human-Powered Flight 
Cyclist Byron Allen crosses the English Channel in a pedal-powered aircraft called the Gossamer Albatross. The flight takes 2 hours, 49 minutes, and wins a [sterling]100,000 prize for its crew, headed by designer Dr. Paul MacCready. Constructed of Mylar, polystyrene, and carbon-fiber rods, the Albatross has a wingspan of 93 feet 10 inches and weighs about 70 pounds.

1981 Space Shuttle
For the first time, NASA successfully launches and lands its reusable spacecraft, the Space Shuttle. The shuttle can be used for a number of applications, including launch, retrieval, and repair of satellites and as a laboratory for physical experiments. While extremely successful, the shuttle program will suffer a disaster in 1986 when the shuttle Challenger explodes after takeoff, killing all on board.

1982 Artificial Heart 
Dr. Robert Jarvik implants a permanent artificial heart, the Jarvik 7, into Dr. Barney Clark. The heart, powered by an external compressor, keeps Clark alive for 112 days.  

1983 PC
In January "Time" names its 1982 "man" of the year — the personal computer. PC's have taken the world by storm, dramatically changing the way people communicate. IBM dominates the personal computer market, benefiting both from the production of its own machines as well as "clones" produced by other companies. 

1985 Genetic Engineering
The USDA gives the go-ahead for the sale of the first genetically altered organism. The rapidly growing biotech industry will seek numerous patents, including one for a tomato that can be shipped when ripe. 

1988 Graphic User Interface
Apple files a suit charging that Microsoft has pirated Apple's user-friendly graphical interface. The suit will fail, and Microsoft's star will continue to rise. By the mid 1990's, Apple will be experiencing a painful and public financial shakeout. 

1990 Hubble Telescope
The space shuttle Discovery deploys the Hubble Space telescope 350 miles above the Earth. Although initial flaws limit its capabilities, the Hubble will be responsible for numerous discoveries and advances in the understanding of space.