Although known to Europeans for 155 years, the first systematic observations of these objects weren't carried out until 1678 when Edmund Halley spent two years on the island of St. Helena.
Although known to Europeans for 155 years, the first systematic observations of these objects weren't carried out until 1678 when Edmund Halley spent two years on the island of St. Helena. One lies in the constellation Dorado, while another is in the constellation Tucana, and they are visible as far north as 16 degrees north latitude. The distance to this pair of objects was first estimated in 1912 by Henrietta Levitt using Cepheid variable stars and the supernova observed in the larger one in 1987 provided a better measurement. FTP, name these small, irregular companion galaxies, orbiting the Milky Way at a distance of just over 50 kiloparsecs.
Although known to Europeans for 155 years, the first systematic observations of these objects weren't carried out until 1678 when Edmund Halley spent two years on the island of St. Helena.
Magellanic Clouds