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Types of stars

This animation demonstrates the process of star development for average and massive stars.

Geography

Keywords

star, star development, nebula, red giant, planetary nebula, white dwarf, red supergiant, supernova, neutron star, black hole, astronomical object, astronomy, geography

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The formation of the Sun and the planets started with the contraction of a dust cloud about 4.5 billion years ago.

The Sun

The diameter of the Sun is about 109 times that of the Earth. Most of its mass consists of hydrogen.

Chain reaction

Energy released during nuclear fission can be used for civilian or military purposes.

Fusion reactor

Nuclear fusion will serve as an environmentally friendly and practically unlimited source of energy.

Gravitational waves (LIGO)

Massive accelerating or orbiting bodies cause ripples in spacetime. These are called gravitational waves.

Hubble Space Telescope

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

Kepler space telescope

The Kepler space telescope was launched by NASA to discover Earth-like planets orbiting other stars

Observatory

Observatories are often built at high elevations to minimise the effects of atmospheric turbulence

Planets, sizes

The inner planets of the Solar System are terrestrial planets while the outer planets are gas giants.

Telescopes

This animation shows optical and radiotelescopes used in astronomical observation.

The Dawn mission

Studying Ceres and Vesta will help us learn more about the early history of the Solar System and how rocky planets are formed.

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.

The development of celestial mechanics

This animation introduces the studies of astronomers and physicists whose works fundamentally changed our view of the universe.

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