And the NBC correspondent doesn't think any Astronauts will be going to Mars by 2040. Using Nuclear will be the way to get there what ever decade.

I gave this a watch, so the professor of Rochester University gives view

That is decades away.

Jul 30 2020 > Perseverance Rover + Ingenuity Helicopter > Atlas V > Mars Exploration Mission 2020... At this point any Mission to Mars that isn't Robotic will probably be one way... Still would be few of Space Tourist that would do it anyway just to prove it could be done... ***