Elon Musk believes that humans are probably alone in the universe since there is no evidence of an alien civilization. Speaking at SpaceX's event at Starbase, Texas on April 6, Musk spoke on a range of topics involving Mars, the future of humanity, consciousness and of course, aliens.

He said that he is yet to see any concrete evidence about the existence of aliens while evoking one of the coolest theories in existence -- the 'Fermi Paradox'. It is named after Italian-American Physicist Enrico Fermi who believed that aliens equipped with super advanced technology might have spread out and colonized the entire galaxy but no one has ever found any proof of their existence.

"I have not seen any evidence that there are aliens on Earth. The question 'where are the aliens' is a very profound one. I am aware of no evidence of aliens whatsoever...I think we are probably alone," Musk said.

Colonize Mars before World War 3

Refusing to be a "lame one-planet civilization," Musk spoke on the preparations that are underway to make humans multiplanetary in order to preserve consciousness if it hasn't extended to other star systems. He said that he will build a city on Mars in 20 years and Starship will play a key role in realizing his dream.

Starship is SpaceX's full reusable and world's most powerful rocket which is currently undergoing test launches. It has launched three times so far but failed to complete the missions. Musk said that the fourth flight is likely next month. Standing 121 meters (397 feet) tall, Starship's upgraded model will be taller by ten meters, the SpaceX CEO said.

SpaceX has plans to launch a million tons in eight years to Mars and 10 Starships each day in its preparation to colonize the red planet. A self-sustaining city on Mars, according to SpaceX, will need around 1 million people and millions of tons of cargo. "We will do this in 20 years," Musk said.

He also said that thousands of Ships will depart from Earth to Mars every two years at one point, something which he believes is pretty doable. "It will look like Battlestar Galactica, but in a good way," he said. He also said that Mars must be colonised before World War 3 breaks out.

After Starship's third flight on March 14, Musk predicted that the launch vehicle will reach Mars within five years. But before colonizing Mars, Starship will play a crucial role supporting NASA's Artemis Program to build bases on the Moon.