Skip to content- First programmable digital computer Z3, 1941
- First programmable electronic computer Colossus, 1943
- First programmer Ada Lovelace (1815 – 1852)
- First Satellite in space Sputnik 1 (1st Oct 1957 by Russia)
- First sighting of Halley‟s Comet 240 BC by Chinese
- First solid-state computer 1960 (USA)
- First space shuttle flight Columbia (1981)
- First spacecraft to orbit Saturn Cassini-Huygens July 1, 2004
- First supersonic flight Captain Charles Elwood Yeager (14th Oct 1947)
- First test tube baby A girl Louise Brown (July 25, 1978)
- First talking film “Lights of New York” (1928)
- First transcontinental flight 10th Dec 1911 (Flown by Calbraith P. Rodgers)
- First unmanned landing on Mars 1971 by USA
- First US space station Skylab-I
- First US spacecraft to reach moon Ranger 4
- First US woman in space Sally K. Ride (Challenger on 4th April 1983)
- First weather satellite in orbit 17th Feb, 1959 (US Navy launched it)
- First Woman in space Valentina Vladimirovna Tereshkova (USSR) 16 – 19 June 1963
- First woman physician of USA Elizabeth Blackwell
- First woman to cross Atlantic Ocean by air Amelia Earhart
- First woman to walk in space Svetlana Savitskaya ( 1984) “Floating bodies law” Archimedes
- Gas in balloon Helium
- hardest thing present in a human body Dental enamel Highest electrical conductivity Silver metal
- Joints in human body 236 Largest bone Thigh Bone
- Largest comet The object 2060 Chiron (discovered in 1977)
- Largest invertebrate Giant Squid
- Largest Meteor Crater New Quebec (Canada)
- Largest Planet Jupiter (diameter 88,844 miles) Largest Satellite ` Ganymede
- Largest Star Betelgeuse (500 times greater than the Sun)
- Least Abundant element Radio active gas Random Least dense planet Saturn
- Longest bone in human body Femur or Thighbone
- Longest cell in human body Nerve cells (Neurons) 4 feet and 3 inches Maximum duration of eclipse 7 minutes and 31 seconds
- Most common element in the atmosphere Nitrogen
- Most common element in the universe Hydrogen
- The most easily breakable bone of human body Collar bone
- Most expensive metal Platinum
- Nearest planet from the Sun Mercury
- Normal blinking of human eyes 20,000 times a day
- Normal Blood Pressure 120/80 mm Hg.
- Normal breathing of human 20 times per minute
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