DWARF GALAXIES By: Moriswalazubiya Istiyaq : @_its_zubiya_
IN the light with less pollution when we look up at the sky we are able to see some bright twinkling objects which beautifies the view of our night sky, we call them ‘Stars’(Bright laminating objects) which are billions of miles away from us but seems as if they are very close to us. This bright band of stars which glorifies the beauty of the night sky is called Galaxy. The word Galaxy is derived from Greek word Galaxias meaning milk. It can be seen as a massive, gravitationally bound system which contains stars, stellar remnants, gas, dust and dark matter. Galaxies range from dwarf stars with as few as 10 million to giants with hundred trillion stars.
Therefore it is very hard to tell how large a galaxy is solely based on a picture because a very large galaxy at a distance can seem very small compared to the one which has less stars and near to our vision. Hence he used Hubble method to describe the shape and size of galaxies.
Formation Galaxies:
of
Dwarf
According to a theory, dwarf galaxies are formed with gas containing metal or dark matter(a mysterious matter that is thought to account for 85% of the matter in the known universe). NASA’s Galaxy Evolution Explorer Space Probe identified new dwarf galaxies formed out of How is the width and gases having low metallicity. shape and distance of Due to their small size, they galaxies measured? are pulled towards or tear apart other spiral galaxies and In 1924, when astronomer result in galaxy merger. Edwin Hubble proved that galaxies are too far from us and they contain millions and billions of stars which are bound together by gravity.
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