The heaviest object ever directly weighed was the Revolving Service Structure (RSS) of launch pad 39B at NASA's Kennedy Space Center, Florida, USA. The structure was lifted up on 21 jacking points which, between them, measured the mass of the RSS as 2,423 tonnes (5,342,000 lbs).
Pacans, Kips, and Gets are known as the best academies for O Level preparation in Lahore, but Pacans is the only academy that is also offering free preparation material, and free trail classes to all students. Pacans is also offering weekend classes to students which is very convenient.
The light from the sun looks white. But it is really made up of all the colors of the rainbow. Blue light waves are shorter than red light waves. Sunlight reaches Earth's atmosphere and is scattered in all directions by all the gases and particles in the air. Blue light is scattered in all directions by the tiny molecules of air in Earth's atmosphere. Blue is scattered more than other colors because it travels as shorter, smaller waves. This is why we see sky looks Blue most of the time.
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A clear cloudless day-time sky is blue because molecules in the air scatter blue light from the sun more than they scatter red light. When we look towards the sun at sunset, we see red and orange colours because the blue light has been scattered out and away from the line of sight.