Elon Musk reveals the message to aliens he has left on Space X rocket and it's perfect

Elon Musk seems to be living the life. While the expenditures you normally hear about from the world's richest tend to be in the realm of mansions and sports cars, the CEO of Tesla and Space X does things a little differently. Well, he still ends up with the most expensive houses and vehicles, but he's also dedicated to innovation and scientific achievement in a way few others are.

Earlier this week, Space X successfully launched their Falcon Heavy rocket from NASA's Kennedy Space Center using the same launch pad Apollo 11 was launched 50 years ago. The 23-story construction is the most powerful rocket in the world, with 27 engines and three reusable 134-foot-tall boosters, so it was quite a feat to pull off. During the launch, it had the explosive power equivalent to four million pounds of TNT, so as you can imagine, Musk was more than a little worried.

Luckily, it all went off without a hitch, meaning that the rocket is well on its way to follow Mars in an orbit around the sun. However, this being Elon Musk we're talking about, the launch had to be livened up in some way. On board the rocket is his red Tesla Roadster, and in its driving seat is a dummy in a spacesuit, nicknamed 'Starman'.

As if this wasn't ridiculous enough, the car was blaring out David Bowie's Space Odyssey as the rocket took off, with cameras on the interior to live stream the event on YouTube. "They should really provide some epic views if they work and everything goes well." Musk said.

This isn't particularly surprising, given this is the same man who recently made $5 million by selling flamethrowers online. However, there was one last personal touch aboard the rocket, as Musk shared on Instagram. In the photo, he revealed that on the car's circuit board there was a secret message.

Fittingly, it reads: "Made by humans".

The primary purpose of the mission was to see if the rocket could take objects into orbit, which it proved, but its adventures are not over yet. At the riskiest point of the journey, the rocket will spend six hours in the Van Allen belt, which has intense radiation.

"It's going to get whacked pretty hard by high-energy particles," said Musk. "The fuel could freeze, and the oxygen could be vaporized, all of which could inhibit the third burn which is necessary for trans-Mars injection."

The Falcon Heavy is essentially three Falcon 9 rockets, but only costs about 45% more than a Falcon 9. The total cost of the launch came to $90 million, which is relatively low considering the usual costs of these things. But it's not like Musk to be satisfied with just that. A new system they're developing could be even more powerful, matching the power of NASA's famous Saturn V and carry a payload all the way to Pluto.