The first E-mail was sent by computer engineer Ray Tomlinson to himself in 1971. The E-mail was sent from one computer to another computer in Cambridge, Massachusetts. It travelled via ARPANET, a network of computers that was the precursor to the Internet. His first message read ‘testing 123’. The first E-mail from space was sent […]
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SMS or Short Messaging Service is a type of communication used in mobile phones. SMSs are commonly called ‘text messages’. With SMS, someone can send text to another person. The text message was born in the UK, in 1992. The first SMS was sent by a 22-year-old test engineer, Neil Papworth of Sema Group (Mavenir
The Hubble Space Telescope is a large telescope in space. NASA launched Hubble Space Telescope in 1990. Hubble is as long as a large school bus. It weighs as much as two adult elephants. Hubble travels around the Earth at about 5 miles per second. It takes the pictures of planets, stars and galaxies. Hubble
The Smallest Moons circle Planet Mars. Asaph Hall discovered them in 1877. They were named Phobos and Deimos. Both moons are blacker than coal. Phobos is 27 Kilometres across at its widest point and has a large impact crater on one side. It flies around Mars three times in one Martian day. Deimos is even
The International Space Station (ISS) is a space station, or a big satellite that people can live in for a long time. The station is a connected project among several countries: the United States, Russia, Europe, Japan and Canada. The Space Station is the largest manned object ever sent into space. It is a research
Rigel Star is the brightest star in the constellation of Orion. It is 800 light years from the Earth. Rigel is actually a three-star system consisting of the blue supergiant Rigel A and two distant, and dimmer stars. Rigel Star is 40,000 times brighter than the Sun. Rigel Star is only around 8 million years
Most of the Trojan Asteroids orbit the sun with Jupiter. Such asteroids were first discovered in 1906. All of Jupiter’s Trojan Asteroids are named after the heroes of the Trojan War. There are currently about 1200 known Trojan Asteroids. 624 Hektor is the largest of the Trojans. Some Trojan Asteroids are composed of ice and
The Earth is wrapped in a blanket of air called the ‘atmosphere’, which is made up of several layers. About 19-30 kilometres above the Earth is a layer of gas called Ozone, which is a form of oxygen. The Ozone Layer is known as the Troposphere. The troposphere extends up to the stratosphere layer. The
The Great Red Spot is a giant, spinning storm in Jupiter’s atmosphere. It is a football-shaped area of storms. It is like a storm on the Earth, but it is much larger. Jupiter’s Great Red Spot is twice the size of the Earth. The spot has a high pressure and storms with winds. It is
The Asteroid Belt is located between planets Mars and Jupiter. It was first discovered in 1801. It is disc-shaped. It contains thousands of rocks and debris known as asteroids and some dwarf planets. The asteroids are made of rock and metal. They are irregularly shaped. All these orbit the Sun. Most asteroids are named by
Ganymede is the biggest moon in the entire solar system. It is the moon of Planet Jupiter. Ganymede was discovered in 1610 by astronomer Galileo Galilei. Ganymede’s distance from Jupiter is 1,070,400 kilometres. This moon has a number of layers. Ganymede is without a substantial atmosphere containing oxygen, but not enough to support life. Ganymede
The North Star or Pole Star, called Polaris, is located nearly at the North Pole. Some say it’s the brightest star in the sky. But Polaris ranks only 50th in brightness. The northern pole star is known by various names, including Golden Peg, Evil Star and The Star That Does Not Walk. Finding Polaris is
The Andromeda Galaxy is a large galaxy closest to the Milky Way. It is also known as Messier 31, M 31 or NGC 224. It is one of the few galaxies that can be seen from the Earth. In 4.5 billion years, the Andromeda Galaxy and the Milky Way are expected to collide. Since it
All objects in the solar system, including the Moon, get their light from the sun. The Moon has no light of its own. It shines because its surface reflects light from the sun. At any time, half of the Earth and half of the Moon are lit by the sun. The brightness of the Moon
Neil Armstrong was the first human to walk on the Moon. The date was July 21, 1969. After months of practice and preparation, the Apollo 11 spacecraft was launched from Kennedy Space Centre in Florida, in 1969. Neil Armstrong had to take over manual control of the landing of Apollo 11 spacecraft. The landing was