Astrophysicist Neil deGrasse Tyson and SpaceX CEO Elon Musk have made scathing comments about each other online.

Um, Actually Famed astrophysicist and science fiction pedant Neil deGrasse Tyson doesn't think very highly of multi-hyphenate billionaire Elon Musk's desperate desire to deliver humanity to Mars. During a chat with Bill Maher — who has plenty of quibbles with the plan himself — last week,

American astrophysicist Neil deGrasse Tyson dismissed Elon Musk's ambitions to send people to Mars, saying that unless there is a push caused by a shift in geopolitics, it will not be possible as a pure exploration project.

Elon Musk has slammed Neil deGrasse Tyson after the celebrity astrophysicist mocked the billionaire’s plan to send humans to Mars.

Neil deGrasse Tyson, the world-famous astrophysicist, has always held a deep respect for the pioneers of science, no matter where they came from. His recent comments about Africa 's forgotten scientific heroes serve as a powerful reminder that the cradle of humanity also holds a rich history in science and technology.

I don't see it happening until governments judge that it's geopolitically in our interest,” he said in conversation with Donna Brazile and Andrew Young.

Elon Musk defended his Mars colonisation plans after Neil deGrasse Tyson mocked the idea, stating that Mars is crucial for humanity's long-term survival. He also noted he won't seek venture capital funding.

Elon Musk defended his Mars colonisation vision against Neil deGrasse Tyson's criticism after the astrophysicist's rant went viral.