Galaxies on Instagram: "A day on each planet is defined by how long it takes the planet to rotate once on its axis, and they vary dramatically across the solar system. Mercury spins slowly, so its day lasts about 59 Earth days. Venus rotates even more slowly and in the opposite direction, giving it the longest day of all—243 Earth days. Earth takes 24 hours. Mars rotates in about 24 hours and 37 minutes, making its day very close to ours. Jupiter spins the fastest, completing a rotation in just

The Moment of History on Instagram: "In 1986, Queen performed their last concert with Freddie Mercury. The show took place at Knebworth House, a private English country estate. The performance was held on August 9th. More than 120,000 people came to see Freddie and hear Queen live. None of the audience knew that they were witnessing Freddie’s final live performance."

Star AI | Navigate the Stars of AI on Instagram: "A Special Electric Device from 102 Years Ago! This is called a Mercury arc rectifier, and it was found inside a really old elevator that's over 100 years old! What does it do? This device changes electricity from one type to another. There are two types of electricity: AC (Alternating Current) - electricity that switches direction back and forth, like the power in your house DC (Direct Current) - electricity that flows in only one direction, like