1 Sputnik 1, the first artificial satellite to go into orbit, launched 4 October 1957. 2  Sputnik 2, the first spacecraft to carry a living animal (the dog Laika), launched 3 November 1957.  Sputnik 3, a research satellite launched 15 May 1958.
By population the 3 largest cities in Spain are Madrid 2.9 million, Barcelona 1.5 million, and Valencia 741,000. They include: the capital Madrid, Barcelona and Valencia. Onlyâ¦ two  of Spain's cities, the national capital Madrid and Barcelona, have  populations of more than one million.
Madrid is the capital of Spain. Madrid is located on the Manzanares River and was made the capital of Spain in 1561.The population of the city is roughly 3.3 million and the population of the Madrid metropolitan area is about 6.5 million.o,Barcelona is not the capital of Spain.The capital of Spain is Madrid.