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LRI4597192: Episode of the defense of the Sublicius Bridge by the legendary Roman heros Horatius Cocles during the fighting against the Etruscan Ceramic plate produced in Urbino in the workshop Fontana, Italy. 1560 around Florence, Museo Nazionale del Bargello, Italian School, (16th century) / Bridgeman Images
PIX4590807: Constellations of the Great Dog, Orion and Hyad Cluster - Constellations Canis Major, Orion and the Hyades cluster - Winter Constellations. On the left the constellation of the Great Dog with the star Sirius, in the center the constellation of Orion, on the right the cluster of the Hyades. Winter constellations, from left to right: Canis Major with Sirius star, the constellation Orion and the Hyades cluster / Bridgeman Images
PIX4574132: Artist's view of a hot Jupiter - Exoplanet - Hot Jupiter - Artist's view of a gas giant exoplanet very close to its star. Many of the extra - solar planets which have been discovered in recent years are large, massive, and orbit surprisingly close to their parent stars. These are believed to be gas giant planets similar to Jupiter. Since they're so close to their sun, they're hot. Thus the common term for them has become “” hot Jupiter””. This one is hot enough to glow a dull red even on its night side. The existence of these planets has proven that the arrangement of other solar systems need not closely resemble our own, Bergeron, Joe / Bridgeman Images
PIX4572829: Artist view of a magnetar - Magnetar - Artist view - Artist view of an eruption of X-rays and gamma from a magnetar, a neutron star endowed with a powerful magnetic field. Artist's concept of a burst of X - rays and gamma released by a magnetar, a neutron star with an extremely powerful magnetic field, Dixon, Don (b.1951) / Bridgeman Images
PIX4573686: Artist's view of the exoplanet Gliese 581c. - Artist's view of the exoplanet Gliese 581c. Gliese 581c, with a radius of 1.5 times that of the Earth, is the first exoplanet gathering the necessary elements to imagine the existence of a possible extra-terrestrial life. With a mass of 5 times that of the Earth, an average temperature between 0 and 40* C, this exoplanet rotates around its star in just thirteen days and is located 14 times closer to its star than the Earth is to the Sun. But this star, Gliese 581, is a red dwarf, a star much smaller and less luminous than the Sun, so the position of this exoplanet is ideal for allowing the presence of water in liquid form on its surface, Dixon, Don (b.1951) / Bridgeman Images