The sky appears blue because the sunlight is scattered by the gas molecules in the atmosphere - a phenomenon known as Rayleigh scattering - named after the discoverer - a British physicist who also discovered Argon - Lord Rayleigh (1842-1919). So, if there was no atmosphere, the sky would appear black.
মন্তব্য প্রদান করতে দয়া করে প্রবেশ কিংবা নিবন্ধন করুন।