According to the laws of physics, the lowest possible temperature has been calculated to be a mind-boggling -273.15°C. This temperature is known as absolute zero.
Sound waves move through the air at a velocity of about 1,235 kph, or about a kilometer every 2.9 seconds.
A bolt of lightning can measure up to one billion volts of electricity.
The first public road in the world to be lit up by electricity was Mosley Street in Newcastle, a city in North East England, in 1879.
Temperature changes can cause large buildings to noticeably grow and shrink. During summers in Paris, the Eiffel Tower can be almost 15 cm taller.
Atoms—which make up every single thing in the known universe—are 99.99% empty space.
All mass creates a gravitational pull—yes, the same kind of gravity that pulls us towards the Earth. In fact, because the Moon has significant mass and is relatively close to Earth, we weigh slightly less when it's directly overhead.
