Dark Matter is an important subject in theoretical physics. Dark matter is thought to be responsible for about four-fifths of the mass of the universe . Using data from GPS satellites, it is known that the Earth is surrounded by some strange substances that are thought to be responsible for the Earth's mass. Professor Ben Harris of the University of Texas recently reported such information. Astronomy is a kind of hypothesized substance, the nature of which is not yet known. They are thought to interact with other matter simply through a gravitational ball ; The only way to identify them as such is with their gravitational pull. Secret matter is thought to be responsible for about four-fifths of the total mass of the universe . They do not emit or absorb electromagnetic waves (e.g. , light), nor do they interact at all with these waves , so there is no way to see them directly through binoculars. Secret matter is thought to account for 63% of the total mass of the universe and 23% of the total mass- energy . Though Dark Matter has not been observed or is not 100% established, this idea is prevalent in the scientific community. Many formulas have been made based on this , the formula has been proved. Recent data from GPS satellites have created new ideas. Ben Harris has been able to measure the magnitude of the force of gravity on the earth . Overall analysis shows that Dark Matter surrounds the Earth like a circular disc , 191 km thick and 60,000 km wide , which is responsible for making the Earth feel heavier. Ben Harris plans to test the satellite by changing its orbit during the gravitational pull between the sun and the moon. If his search is correct , it will be possible to unravel the mystery surrounding the long-standing Dark Matter.