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.
'Dark Matter' and 'Dark energy' mein kia difference hai ?
Dark matter and dark energy are the yin and yang of the cosmos. Dark matter produces an attractive force (gravity), while dark energy produces a repulsive force (antigravity). Together, they make up 96 percent of the universe—and we can’t see either.
1 year ago
One of the most surprising discoveries of the 20th century was that the ordinary matter makes up less than 5 percent of the mass of the universe.The rest of the universe appears to be made of a mysterious, invisible substance called dark matter (25 percent) and a force that repels gravity known as dark energy (70 percent).
While The visible universe including Earth, the sun, other stars, and galaxies is made of protons, neutrons, and electrons bundled together into atoms.