The Hubble Space Telescope orbits outside the distorting influence of Earth´s atmosphere.
The three important laws describing planetary motion were formulated by Johannes Kepler.
Observatories are often built at high elevations to minimize the effects of atmospheric turbulence
This animation shows optical and radiotelescopes used in astronomical observation.
Space probes and Mars rovers examine the structure of Mars and possible traces of life.
A wide variety of optical instruments are in use today, ranging from microscopes to telescopes.
This animation introduces the studies of astronomers and physicists whose works fundamentally changed our view of the universe.
The animation shows the two-seater Lunar Rover used in the Apollo 15 mission
Massive accelerating or orbiting bodies cause ripples in spacetime. These are called gravitational waves.
The diameter of our galaxy is about 100,000 light years; it contains more than 100 billion stars, one of which is our Sun.
Neil Armstrong, one of the crew members of Apollo 11 was the first man to set foot on the Moon.
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.
The New Horizons space probe was launched in 2006, with the objective to study Pluto and the Kuiper Belt.
This animation demonstrates the process of star development for average and massive stars.
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.
Yuri Gagarin became the first human in space on April 12, 1961.
The International Space Station is a habitable satellite built with the cooperation of 16 countries.
Satellites orbiting the Earth can be used for civilian or military purposes.