'We have no time to lose'
The United States' space agency thinks spacecraft powered via a nuclear thermal rocket could reach Mars in only three or four months, bringing astronauts to the Red Planet's doorstep in half the time required by conventional, liquid-propellant rockets.
This came as additional reports suggested China had successfully tested a new orbital rocket potentiallyat supersonic speeds. This is especially dangerous because, lacking the long warning window ballistic missiles afford , hypersonic missiles armed with nuclear warheads could circumvent early-warning systems, causing casualties from a strike to soar like never before.
"If the United States is serious about leading in a human mission to Mars, we have no time to lose," said U.S. Representative Don Beyer, who is chair of the committee."Congress has prioritized development of nuclear space propulsion over the past several years, directing about $100 million annually for NASA to advance nuclear thermal propulsion capabilities with the goal of conducting a future in-space flight test," added Beyer, in the hearing.
reactor. Officials at NASA argued that much more funding is necessary, but no solid dollar amount was set during the Wednesday hearing.involves identifying or manufacturing materials capable of withstanding the heat and exposure necessary to function in space, explained Roger M. Myers, who is chair of a committee on space-worthy nuclear engines at the National Academies of Sciences, Engineering, and Medicine.
"We've landed small rovers there but a spacecraft carrying humans would be much bigger," said Lal."We also need to make sure that the environmental control and life support systems can keep [astronauts] alive for two to three years." But with a recent paper from UCLA researchers revealing that
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