Explanation

• Alexander Fleming discovered Penicillin
• At St. Mary's Hospital in London
• In September 1928.
• First true antibiotic used to treat bacterial infections.
• First patient treated was Albert Alexander, a 43-year-old policeman, on 12 February 1941

Last updated by NA on 23-April-2026

Explanation

• The modern bicycle was invented by John Kemp Starley.
• He introduced the safety bicycle design in 1885.
• This design included two equal-sized wheels and a chain drive system.
• He is known as the father of the modern bicycle.

Last verified on 02-06-2026

Explanation

• Nicolaus Copernicus is called the Father of Modern Astronomy.
• He introduced the heliocentric theory in 1543.
• This theory stated that the Sun is at the center of the solar system.
• His ideas changed the old belief that Earth is the center.

Additional information:

• Galileo Galilei, a later figure, is often called the "father of observational astronomy".

Last verified on 01-06-2026

Explanation

• Penicillin, the first true antibiotic, was discovered by Alexander Fleming.
• He made this discovery in 1928 at St. Mary’s Hospital, London.
• He found that a mould (Penicillium) killed bacteria in culture dishes.
• His findings were officially published in 1929.
• First patient treated: Albert Alexander (12 February 1941)

Last verified on 01-06-2026

Explanation

• Microsoft was founded on April 4, 1975.
• It was founded by Bill Gates and Paul. Allen in Albuquerque, New Mexico.

Last verified on 02-03-2026