Today, using sophisticated man - made means of probing the universe, scientists estimate that tens of billions of galaxies exist, many of which consist of hundreds of billions of stars!
आपल्या आकाशगंगेत कोट्यवधी तारे अगदी जवळजवळ असल्याचे दिसतात, जणू ताऱ्‍यांची रास!