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.
Do not do this! Muriatic acid is used to profile concrete by breaking down the top coat of the surface for epoxy coatings and sealers. If used to remove oil stains you will still have oil underneath and a weakened concrete surface that will look different than the rest of the garage floor.
Eagle Concrete Polish protects and beautifies interior concrete floors. It enhances stained, newly stained floors and regains the luster of worn areas on previously sealed and polished floors. Eagle Concrete Polish may be used in restaurants, stores, malls, office buildings, healthcare centers, hotels, motels, etc. Gloss finish will add shine to concrete floors. As an alternative choose Eagle Matte Polish for less gloss and to better mask scuffing. 1  Protects sealed concrete floors from scratching so you never have to reseal.  Glosses dull floors, adds sheen to dull concrete floors while masking scuffs.