Satellite navigation, GPS

Satellite navigation, GPS

The Global Positioning System consists of 24 satellites but only 4 have to be visible for positioning.

Geography

Keywords

satellite navigation, satellite, navigation, GPS, Global Positioning System, positioning, distance measurement, elevation, civil, military, geography

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Environmentally friendly vehicles

Combining a conventional internal combustion engine propulsion system with an electric propulsion system reduces emission.

Geographic coordinate system

The geographic coordinate system enables every location on the Earth to be exactly specified.

Geographic coordinate system (basic)

The system of circles of latitude and longitude on the globe enable every location on the Earth to be exactly specified.

Hubble Space Telescope

The Hubble Space Telescope orbits outside the distorting influence of Earth´s atmosphere.

ISS

The International Space Station is a habitable satellite built with the cooperation of 16 countries.

Mars Exploration Program

Space probes and Mars rovers examine the structure of Mars and possible traces of life.

Measuring time

The first calendars and time-measuring instruments were already used by ancient Eastern civilisations.

Moon landing: 20 July 1969

Neil Armstrong, one of the crew members of Apollo 11 was the first man to set foot on the Moon.

Navigational instruments of the past

Several ingenious instruments have been invented over the centuries to help in navigating the seas.

Satellite types

Satellites orbiting the Earth can be used for civilian or military purposes.

Space Shuttle

The Space Shuttle was a manned, reusable spacecraft operated by NASA.

The Earth’s magnetic field

The Earth’s magnetic North and South poles are located near the geographic North and South poles.

Voyager space probes

The Voyager space probes were the first man-made objects to leave the Solar System. They gather data about outer space and carry information about humanity.

Sputnik 1 (1957)

The Soviet-made satellite was the first spacecraft to be launched into outer space (in October 1957).

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