WHAT IS SPACE

  From the perspective of an Earthling, outer space is a region that occurs approximately a hundred kilometers (60 miles) above the planet, where there's no appreciable air to breathe or to scatter light. In that place, blue offers manner to black due to the fact oxygen molecules are not in sufficient abundance to make the sky blue. similarly, area is a vacuum, meaning that sound can not bring due to the fact molecules aren't close sufficient together to transmit sound among them. it really is not to mention that space is empty, but. gas, dirt and other bits of matter waft around "emptier" areas of the universe, whilst greater crowded regions can host planets, stars and galaxies. nobody knows exactly how big area is. the problem arises because of what we will see in our detectors. We measure long distances in area in "mild-years," representing the space it takes for light to journey in a yr (kind of 5.8 trillion miles, or nine.three trillion kilometers). Fro...