Istituto San Vincenzo - Scuole Regina Mundi

Stars

lunedì 4 maggio 2009

The students of the fifth year have been studying the stars with their science teacher and have dealt with some of these subjects in English, as you can see below.

The Pleiades also know as the Seven sisters, are an open cluster of about 500 young and hot stars in the constellation of Taurus. It is among the nearest star clusters probably the best know and certainly the most obvious to the naked eye.

The cluster is dominated by blue stars which have formed within the last 100 million yers, after which it will have dispersed.
The Andromeda Galaxy is a spiral Galaxy approximately 2.5 million light-years away in the constellation Andromeda. It is one of the farthest objects visible to the naked eye, and can be seen with binoculars even in urban areas.

In a galaxy there are millions of stars, dusts and gas. Besides simple stars, they tipically contain various types of star clusters and nebulae. Each Galaxy is an autogravity system and it can be spiral, elliptical, irregular and lenticular.

Andromeda is the largest galaxy of the local group, which consists of Andromeda Galaxy, the Milky Way Galaxy, the Trianglum Galaxy and about 30 other smaller galaxies. It appears quite small without a telescope because only the central part is bright enough to be visible, but the full angular diameter of the galaxy is seven times that of the full moon.

Federica 5° Linguistico 2008-2009