Helium was discovered on the Sun before on Earth. During ... | funfact.wiki | funfact.wiki
Helium was discovered on the Sun before on Earth. During an 1868 eclipse, astronomers found an unknown yellow line in the solar Spectrum; Norman Lockyer named the new element after Helios. It was not isolated on Earth until 1895.
Purple does not exist in the light spectrum. When red and blue light simultaneously stimulate the eye, the brain creates this color to resolve the contradictory signals.
Earth has 365 days in a year, but actually rotates 366 times. The extra rotation comes from its orbit around the Sun — an example of the coin rotation paradox.
'Goodbye' originated in the mid-16th century as a contraction of "God be with ye." It was gradually shortened to forms like 'Godbwye,' and under the influence of greetings like 'Good morning,' 'God' shifted to 'Good,' giving us today's word.
The Moon's orbit doesn't spiral around Earth as most people imagine. Because the Earth-Moon distance is tiny compared to the Earth-Sun distance, the Moon's actual path through space is nearly circular, traveling alongside Earth around the Sun.
The distress signal "Mayday" comes from the French "M'aidez" (help me). In 1921, radio officer Frederick Mockford at London's Croydon Airport proposed it for aviation communication with Paris, as both English and French speakers could understand it.