Since the sun is about 26,000 light-years from the centre of the milky way the sun travels at a speed of about 782,000 km per hour in a circular orbit around the centre of the milky way.
As sun itself is formed some 4.6 billion years ago the sun thus needs to speed up and this phenomenon is called as the cosmic year i.e is the amount of the time it will take the sun to reach the centre of the galaxy.
Any species in the ecosystem which is or is less in numbers and can go extinct or fade away from the surface of the earth either by a man-made or natural cause is considered to be an endangered species EN as per the Red list of species published big data book of the IUCN.
Thus the species falls vulnerable unable to withstand the impacts of a hostile environment and which is compromised in its loss due to the depletion of food resources and the depletion of the habitat of species.
These species should be identified and should be kept away from the reach of the man in the biosphere reserves that allow their population to bounce back and thereby their survival rates are high. Keeping hem in breeding grounds and restoration of there lost habits is a must
