PIX4662706: Bambiraptor - Bambiraptor is a small dinosaur from the late Cretace who lived in the United States. One metre long, it fed on small lezards and amphibians. It belongs to the family Dromaeosauridae. Bambiraptor is a small 75 million year old bird-like dinosaur, genus of dromaeosaurid dinosaur that lived during the Cretaceous period / Bridgeman Images
PIX4590972: Constellation of the Great Dog - Constellation of Canis Major - Sirius, the bright star on this image is the brightest star in the sky. Canis Major (the Greater Dog) is one of two dogs accompanying Orion the hunter across the sky. The other is Canis Minor. The constellation figure is ancient, and was one of 48 constellations mentioned by Ptolemy (83 - 161 AD), no doubt reflecting earlier ideas. The modern stick figure joining the brightest stars (above) certainly has a very doggy appearance. The brightest star in the sky is here, Sirius, the Dog Star, so called because its emanations were thought to affect dogs in the heat of summer, the 'Dog Days' when the star is in the same part of the sky as the Sun. Sirius is bright because it is only 8.6 light years from the Sun and it is in any case it is an intrinsically bright star, 25 times more luminous than the Sun / Bridgeman Images
PIX4606121: Lunar rover Lunokhod 2 - Moon rover Lunokhod 2 - This rover sent to the Moon during the sovietic mission Luna 21 travelled 37 km to the surface of the Moon from January to June 1973. This automated lunar rover was sent to the Moon's surface during the soviet “” Luna - 21”” mission. It worked for 5 days, starting on January 16, 1973. it covered 37 km on the Moon's surface / Bridgeman Images
PIX4632855: Arthropleura - An arthropleura crawls among ferns in a carboniferous forest 310 million years ago. The Arthropleura is considered to be the largest arthropod of all times measuring 2-3 metres in length. He is a distant relative of arthropods such as a thousand-legged. A four foot long Arthropleura crawls amidst seed ferns from the genus Neuropteris in a Carboniferous forest 310 million years ago in what is today Scotland. Growing up to 8 feet long and 18 inches wide, Arthropleura was the largest known terrestrial arthropod of all time. A combination of a higher percentage of atmospheric oxygen and relatively few terrestrial predators may have enabled Arthropleura to evolve to such an enormous size. Despite its fierce appearance, Arthropleura is currently believed to have been a vegetarian. In the shadows on the upper right are “” roachoids,””” primitive ancestors of modern cockroaches / Bridgeman Images