Actually, we aren't. The only rocket the US has remotely capable of taking components of a Mars mission even as far as Lunar Orbit is the The Space Launch System (SLS). Ready for testing since 2015, there hasn't been a single successful test of the vehicle since that time. They haven't even attempted to fly it unmanned. The Orion capsule, designed to take a crew of 3 back to The Moon has only been orbited (unmanned) once and that was back in 2014. There are no Mars capable vehicles even in prototype phase. Without the incentive of another space race, there is no way a mission could be put together in just 7 years.
A lot of claims have been made about how new technology has lowered lift cost but those claims are fictional. Excluding development costs, the cost per launch of a Saturn V (in current US dollars) was $1.23 Billion. The cost of a single SLS launch (again, excluding development) is over 2 Billion a launch -- with 15%
less payload per launch.
Space X is in no better shape. The much heralded Falcon Heavy has ONLY HALF the payload capacity of the 1960's Saturn V. The proposed "Starship" rocket, the vehicle that Space X claims is their Mars vehicle, has only 2/3rds the lift to LEO capacity of the Saturn V. Space X has no Mars capable manned space craft even in prototype.
There is a much larger problem for Space X as a private company. There is no profit to be had by landing people on The Moon or Mars. Until there is, there is no way Space X will be able to obtain the Trillion or so dollars in investment it will have to have to get there.
The race to The Moon took just 9 years of serious development, with the full backing of Congress and the American public. In our current environment, it will take more than 9 years just to decide which pronouns to use for astronauts.
Hard reality time, it will be a century, or longer, for Americans to meaningfully attempt to go back to The Moon, another century or more to Mars.
It brings me no pleasure to say this. As some one who came of age in the height of The Space Race, to see it abandoned so callously and replaced by sci-fi movies like "Star Wars" was incredibly painful. I still held out hope when Space Shuttles came on line and promised to rejuvenate our country's return to space. The get people's hopes up again only to disappoint us again is borderline cruel.
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