The diameter of our galaxy is about 100,000 light years; it contains more than 100 billion stars, one of which is our Sun.
The formation of the Sun and the planets started with the contraction of a dust cloud about 4.5 billion years ago.
The diameter of the Sun is about 109 times that of the Earth. Most of its mass consists of hydrogen.
Energy released during nuclear fission can be used for civilian or military purposes.
Nuclear fusion will serve as an environmentally friendly and practically unlimited source of energy.
Massive accelerating or orbiting bodies cause ripples in spacetime. These are called gravitational waves.
The Hubble Space Telescope orbits outside the distorting influence of Earth´s atmosphere.
This animation presents some interesting facts in the field of astronomy.
The Kepler space telescope was launched by NASA to discover Earth-like planets orbiting other stars
Observatories are often built at high elevations to minimise the effects of atmospheric turbulence
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 shows optical and radiotelescopes used in astronomical observation.
Studying Ceres and Vesta will help us learn more about the early history of the Solar System and how rocky planets are formed.
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.
This animation introduces the studies of astronomers and physicists whose works fundamentally changed our view of the universe.