How many Earths can fit inside Jupiter?

Ever wondered what would happen if planets competed in an intergalactic wrestling match? Jupiter would be the undisputed heavyweight champion, tipping the cosmic scales at a whopping 1.9 x 10^27 kilograms.

Named after the king of Roman gods, Jupiter has been turning heads since ancient times. Galileo Galilei first spotted its moons in 1610, inadvertently kickstarting a planetary paparazzi frenzy that continues to this day. NASA's Juno spacecraft is currently playing the role of an overzealous fan, snapping selfies with the gas giant since 2016.

Jupiter is basically the universe's largest whoopee cushion. But don't let its gassy nature fool you – this planet means business. Its immense gravity influences the orbits of asteroids and comets, with some scientists thinking it might even act as Earth's cosmic shield, deflecting potential impactors.

Jupiter's mysteries run deep – literally. Its core is a real head-scratcher - recent findings hint it might be melting into the planet's guts. Talk about an identity crisis! And let's not forget Jupiter's magnetic personality. It's got the strongest magnetic field of any planet, creating a bubble in space bigger than Jupiter itself. This magnetic marvel puts on quite a light show, sparking dazzling auroras and zapping its moons with bursts of energy. Jupiter may be far away, but it sure knows how to make its presence felt!

This cosmic celebrity isn't just a hit in the scientific world. Jupiter's stolen scenes in sci-fi classics like "2001: A Space Odyssey" and inspired musical masterpieces like Holst's "The Planets." It's even the powerhouse behind Sailor Jupiter in the anime "Sailor Moon." Talk about a versatile performer!

If Jupiter were hollow (and not, you know, a swirling vortex of gas and crushing pressure), how many Earths could you cram inside before running out of space?