The Kepler space telescope was launched by NASA to discover Earth-like planets orbiting other stars
The ´Flying Fortress´ was developed for the United States Army Air Force by Boeing
Spitfire was a legendary British single-seat military aircraft used in World War II.
A mobile, nuclear-capable ballistic missile developed at the end of the Cold War.
Radial engines are used primarily in aeroplanes and helicopters.
Farmhouses in the Middle Ages were simple, single-storey structures built from earth, mud and wood.
The architecture of traditional Samoan family settlements reflect the unique culture of their inhabitants.
The dromedary is an indispensable animal for inhabitants of the deserts.
One of the oxoacids of nitrogen. Colourless, moderate acid with a pungent odour, that exists only in aqueous solution.
A compound formed as white smoke during the combustion of phosphorus.
A rock relief located in Northeast Bulgaria, probably carved at the end of the 7th century.
The inability to differentiate certain shades of colour is called colour vision deficiency.
The Hubble Space Telescope orbits outside the distorting influence of Earth´s atmosphere.
Metals forming hexagonal metallic lattices are rigid and difficult to machine.
Colourless, moderate acid, only known in aqueous solution.
This animation presents levels of biological organisation from the level of the individual organism to the level of cells.
The least tightly packed crystal structure.
The face-centred cubic metal lattice allows the closest fit of metal atoms.
One of the largest marsupials.
The Earth's continents have been in constant motion during the history of the planet.