In English
All those things perceptible to senses, without any exception, come under the domain of . The earth is vast and measures 8,000 miles in diameter. The sun is far bigger than earth. The solar system extends to 800 million miles. A galaxy () is far far bigger than the solar system. The sun is at a distance of about 93 million miles from the earth. It is the nearest star to earth. A ray of light travels at a speed of 1,86,000 miles per second. It takes several years for a ray of light to reach earth from a distant star. No ray of light has reached earth from many distant stars as yet. All that is contained in is vast.