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The orbits of the 8 planets in our Solar System are elliptical.
planet, Solar System, Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, planetary orbit, gas giant, rocky planet, dwarf planet, asteroid, asteroid belt, Sun, star, astronomical object, moon, Milky Way, circulatory system, rotation, spiral galaxy, astronomy, geography
The three important laws describing planetary motion were formulated by Johannes Kepler.
The diameter of our galaxy is about 100,000 light years; it contains more than 100 billion stars, one of which is our Sun.
A demonstration of nearby planets, stars and galaxies.
The inner planets of the Solar System are terrestrial planets while the outer planets are gas giants.
This animation introduces the studies of astronomers and physicists whose works fundamentally changed our view of the universe.
The diameter of the Sun is about 109 times that of the Earth. Most of its mass consists of hydrogen.
Uranus is the 7th planet from the Sun, a gas giant.
The animation shows the two-seater Lunar Rover used in the Apollo 15 mission
Comets are spectacular celestial bodies orbiting the Sun.
The Earth is a rocky planet with a solid crust and oxygen in its atmosphere.
Galileo Galilei's scientific achievements contributed greatly to the advancement of physics and astronomy.
This animation presents some interesting facts in the field of astronomy.
Jupiter is the largest planet of the Solar System, it has two and a half times the mass of all the other planets combined.
Possible traces of water and life are sought on Mars.
The first calendars and time-measuring instruments were already used by ancient Eastern civilisations.
Mercury is innermost and smallest planet of the Solar System.
Neptune is the outermost planet of the Solar System, the smallest of the giant planets
The largest satellite of Pluto is Charon.
Saturn is the second largest planet in the Solar System, easily recognisable by its rings.
James Cook's legendary journey around the world proved to be enormously valuable for science.
The formation of the Sun and the planets started with the contraction of a dust cloud about 4.5 billion years ago.
Venus is the 2nd planet from the Sun, the brightest object on the night sky (after the Moon).
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.
A spacecraft on its path is in a constant state of free fall.
The Hubble Space Telescope orbits outside the distorting influence of Earth´s atmosphere.
Neil Armstrong, one of the crew members of Apollo 11 was the first man to set foot on the Moon.
This animation demonstrates Sir Isaac Newton's three laws of motion that laid the foundation for classical mechanics.
During its orbit around the Earth, the visibility of the Moon's illuminated part constantly changes.
Satellites orbiting the Earth can be used for civilian or military purposes.
Studying Ceres and Vesta will help us learn more about the early history of the Solar System and how rocky planets are formed.
The Moon is the Earth's only natural satellite
The apparent movement of the Sun is caused by the Earth's rotation around its axis.
The animation shows the way forces act on wheeled vehicles and vehicles with runners.
The International Space Station is a habitable satellite built with the cooperation of 16 countries.
Space probes and Mars rovers examine the structure of Mars and possible traces of life.
The Cassini spacecraft was exploring Saturn and its moons for nearly 20 years.
The New Horizons space probe was launched in 2006, with the objective to study Pluto and the Kuiper Belt.
The Earth is composed of several spherical layers.
Yuri Gagarin became the first human in space on 12 April 1961.