International Space Station – Largest space station

International Space Station is a satellite/space station orbiting earth, at an altitude of 400 km above earth’s surface. It is the largest manmade object in space weighing more than 400 tons. It is orbiting earth at a speed of 27,000 km/h. It was constructed with international collaboration with US, Russia, European Union, Canada and Japan. […]

Yuri Gagarin – First man in space

Yuri Gagarin was Soviet pilot and cosmonaut. On 12 April, 1961 he became first human in space when his spacecraft Vostok 1 orbited Earth. He was Colonel in Soviet Air Force. He was selected for space program along with 20 others, who had their rigorous training and Gagarin was selected. Vostok 1 was very small […]

World’s first Mobile Phone

World’s first handheld mobile phone was manufactured by Motorola in 1973. Prior to that mobile phones were bulky and used to be in cars and other vehicles. The first mobile telephone call made by Martin Cooper who is a researcher and executive at Motorola on April 3, 1973 to rival telecom company Bell Labs executive […]

BrahMos Missile – World’s fastest missile

BrahMos is a mixed word of River Brahmaputra of Indian and River Moskva of Russia. It is a supersonic missile developed jointly by India and Russia. It is anti-ship cruise missile which can travel at Mach 3 (3 times the speed of sound 3600 km/h). It can be launched from ships, submarines, aircraft and land […]

Cheyenne Mountain Complex – Atomic bomb proof military command centre under Mountain

Cheyenne Mountain Complex is a military installation and nuclear bunker located in Colorado Springs, Colorado, USA. It was constructed under the Cheyenne Mountain by digging and tunneling it. It was built in 1960s during ‘Cold War’ between US and USSR for protecting Command centre from any nuclear strike.  Formerly it was used for United States […]

Meteor Crater – Crater that can be seen from space

METEOR CRATER Meteor crater or Barringer crater is located in Arizona desert in the United States. It is more than 1 km in diameter, depth of 170 m and rim of the crater rise by 45 m from surrounding area. It is a meteorite impact crater. History It is estimated to be formed around 50000 […]

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