A space observatory, also known as a space telescope, is an artificial satellite used, through electromagnetic radiation, to observe planets, stars, galaxies or other celestial bodies similar to telescopes on earth. A great number of telescopes have been put in orbit, fact that provided a great advance of the knowledge of the cosmos.
hurricanes form in warm water
aquifers are bounded above and below by impermeable rock. the driving force of groundwater movement in confined aquifers is pressure, rather than gravity.