Located in the Coma Cluster, about 300 million light years away from Earth, the orb is actually a distant view of the giant elliptical galaxy NGC 4889. At the center of that galaxy lies a sleeping giant: a supermassive black hole that is 21 billion times the mass of our sun. The size of a black hole can be estimated by its event horizon, or the distance from the center of the black hole at which nothing can escape its gravitational grasp.
How To Remove Oil Stains. To remove concrete oil stains from your driveway, garage, or patio, simply apply Pour-N-RestoreÂ® Oil Stain Remover to the oil stain! No scrubbing or rinsing needed. Once liquid has dried, sweep up the remaining powder and allow the remaining moisture to dry.
Most come with enough etching mixture and epoxy paint for one coat and a top coat. If you want to add a second coat, you will need to purchase additional paint and hardener. The kits and paint are available at any hardware store or online. Clean the concrete floor. The epoxy will not adhere to concrete covered with dirt and grease. Sweep up all dirt and debris, and mop the floor with a mixture of dish soap and water. Use a degreaser to scrub away grease stains with a stiff-bristle brush. You can purchase a degreaser at any hardware store.