Abundance of the chemical elements in the Sun and outer planets is similar to that in the universe. Due to solar heating, the elements of Earth and the inner rocky planets of the Solar System have undergone an additional depletion of volatile hydrogen, helium, neon, nitrogen, and carbon (which volatilizes as methane). The crust, mantle, and core of the Earth show evidence of chemical segregation plus some sequestration by density. Lighter silicates of aluminum are found in the crust, with more magnesium silicate in the mantle, while metallic iron and nickel compose the core. The abundance of elements in specialized environments, such as atmospheres, or
National Centre for Earth Science Studies and coffee. In 2004 a laboratory block was added over the existing block to house new facilities and provide two smaller meeting and discussion halls. National Centre for Earth Science Studies The National Centre for Earth Science Studies(NCESS) (Malayalam: ദേശിയ ഭൂമി ശാസ്ത്ര പഠന കേന്ദ്രം) is an autonomous research centre to promote scientific and technological research and development studies in the earth sciences. NCESS pursues problems related to land, sea and atmosphere. It was instituted by the government of Kerala in 1978, at Thiruvananthapuram, Kerala. CESS was the earliest institute in the country to embrace the concept of Earth System Science