Nuclear weapon testing U.S.A. tested the first hydrogen bomb in the world, which had the codename Mike, at the Enewetak atoll in the Marshall Islands (November 1, 1952) Read More
O πλανήτης Γη Multi-colored and natural-colored images of planet Earth recorded by satellites. The third photo on the right depicts the Aurora Australis Read More
Open star clusters Open clusters of stars may contain from 100 to 10.000 stars, all of which formed at nearly the same time Read More
Our solar system A narrow asteroid belt filled with rocks and dusty debris orbits a star like Sun when it was 30 million years old Read More
Our solar system The planets, the moons, the asteroids and the comets belong to the family of our solar system Read More
Photochromic molecules In this experiment you will see how certain materials change color when they absorb light, i.e. electromagnetic radiation. Read More
Photograph of the Moon from Luna 3 Photo of the dark side of the Moon taken by the spacecraft Luna 3 Read More
Planetary system in the constellation Pisces Austrinus Planets around the star Fomalhaut, the brightest star in the constellation Pisces Austrinus Read More
Pluto: the New Horizons mission The spacecraft New Horizons is designed for the study of the atmosphere and the moons of Pluto Read More
Robert Goddard: the theoretical founder of modern rockets Image of Robert Goddard (1881-1945), inventor of 83 patents in the design of rockets and space flights, who holds the launch stand of the 10 foot tall rocket Read More
Rockets' launch The launch of the rockets, Freedom 7, Liberty Bell 7, Friendship 7, Aurora 7, Sigma 7 and Faith 7 Read More
Saturn's satellites and the rings' structure Some of the sixth known Saturn satellites are Pan, Atlas, Prometheus, Ιanus, Pandora, Epimitheus, Mimas, Enceladus, Telesto, Calypso, Tethys, Helene, Dione, Rhea, Titan, Hyperion, Ιapetus, Phoebe Read More
Saturn, the lord of the rings Images of Saturn and its rings, as were recorded by the spacecraft Cassini Orbiter Read More