Hundreds of millions of miles away from planet Earth, the spacecraft Juno is in orbit around Jupiter. And for two years, the probe has been sending mind-boggling images of the planet back to NASA, where experts publish the incredible findings online. In 2018, however – and thanks to Juno’s work – eagle-eyed observers seemingly spotted something sinister lurking in outer space.
Jupiter is colossal; indeed, Earth could fit inside the other planet over 1,320 times. What’s more, Jupiter’s mass is some two and a half times bigger than that of its fellow planets in the solar system all combined. But despite this, the huge solar body is mostly composed of hydrogen. This means, ostensibly, that it has no solid surface to speak of.
Jupiter has fascinated stargazers for centuries, too – perhaps ever since Galileo Galilei observed the planet through a telescope in 1610. Looking closely, Galilei spotted Jupiter’s four orbiting moons, in what is said to have been the first time that moons of other planets apart from Earth were viewed by telescope.