This year the American Nuclear Society’s Nuclear and Emerging Technologies for Space (NETS 2023) conference, which will be held May 7–11, 2023, in Idaho Falls, Idaho, is focusing on powering the next era of space exploration through nuclear-enabled technologies and is sure to be the can’t-miss event of the year for those in the aerospace community.

NASA and the Defense Advanced Research Projects Agency (DARPA) have announced they will collaborate on plans to launch and test DARPA’s Demonstration Rocket for Agile Cislunar Operations (DRACO). DARPA has already worked with private companies on the baseline design for a fission reactor and rocket engine—and the spacecraft that will serve as an in-orbit test stand—and has solicited proposals for the next phase of work. Now NASA is climbing on board, deepening its existing ties to DRACO’s work in nuclear thermal propulsion (NTP) technology—an “enabling capability” required for NASA to meet its Moon to Mars Objectives and send crewed missions to Mars. NASA and DARPA representatives announced the development at the American Institute of Aeronautics and Astronautics SciTech Forum in National Harbor, Md., on January 24.

It’s Thursday, meaning it’s time to dig through the Nuclear News archives for another #ThrowbackThursday post. Today’s story goes back 60 years to the January 1963 issue of NN and the cover story “Review of Rover: A nuclear rocket” (p. 9), which reviews the first phase of the nuclear rocket program from Los Alamos National Laboratory.

Some quick digging online uncovers a lot of information about Project Rover, most notably, a short 20-minute film on the LANL YouTube page that reviews the project (Historic 1960s Film Describes Project Rover). The description of the video notes that the project was active from 1955 to 1973 and led to the design of multiple reactors suitable for testing, including Pewee 1, and that NASA has a modern nuclear thermal propulsion project based on the Pewee design. So it seems fitting to revisit Project Rover, given that there is today a lot of renewed interest in nuclear propulsion for space exploration.

The opening line from the January 1963 article seems to ring true today— “Provided the U. S. continues her space efforts, nuclear-powered rockets are inevitable”—although that probably didn’t seem likely to the nuclear community after the country’s attention shifted from the Space Race to the Vietnam War in the early 1970s when Project Rover was canceled. The introduction to the article lays out the argument for a nuclear-powered rocket and provides a review of the program since its launch in 1955.

The full article as it appeared in 1963 is reprinted below, but don’t forget, all ANS members have full access to the Nuclear News archives that has decades of great content about all topics on nuclear science and technology. Happy reading!

ANS’s August 4 online event “The New Space Race is Going Nuclear” featured several expert panelists who discussed the growing importance of nuclear technologies in space commercialization and exploration. Although nuclear energy has long played a role in space missions, participants discussed the latest exciting developments in the space nuclear field and presented their views on how increased application of nuclear technologies could fundamentally transform the ways in which both crewed and uncrewed space missions are carried out.

Connecting nuclear engineers and scientists with space exploration missions has been a focus of the American Nuclear Society’s Aerospace Nuclear Science and Technology Division since its creation in 2008. One of the main ways those connections are made is through the Nuclear and Emerging Technologies for Space (NETS) conference, which the division supports in conjunction with the National Aeronautics and Space Administration.

ANS celebrated the launch of the newest Navigating Nuclear virtual field trip, “Nuclear Frontiers: Powering Possibility,” with a special watch party held on May 19. The video, which was viewed more than 70,000 times in the first week alone, explores the amazing ways that nuclear science is fueling earthly innovation and deep space exploration.

Help ANS celebrate the launch of our newest virtual field trip, “Nuclear Frontiers: Powering Possibility,” by attending tomorrow's online watch party!

The virtual field trip explores the amazing ways that nuclear science is fueling earthly innovation and deep space exploration. The field trip video, which was made available earlier this month, is part of ANS’s Navigating Nuclear: Energizing Our World program The Navigating Nuclear program, which was started in August 2018, has already reached more than 1.5 million K-12 students.

Register now for the watch party for the virtual field trip, to be held tomorrow, May 19, from 1 p.m. to 2 p.m. (EDT).

Help ANS celebrate the launch of our newest virtual field trip, “Nuclear Frontiers: Powering Possibility,” which explores the amazing ways that nuclear science is fueling earthly innovation and deep space exploration. The video is part of the Society’s Navigating Nuclear: Energizing Our World program, which has reached more than 1.5 million K-12 students.

Register now for this special event, to be held on Wednesday, May 19, from 1 p.m. to 2 p.m. (EDT).

In partnership with Discovery Education, ANS launched its third virtual field trip on May 6. “Nuclear Frontiers: Powering Possibility” takes students on a journey to learn how Earth-based nuclear science and technology are paving the way in space exploration. It is available on-demand on the Navigating Nuclear website.

A hot fire test of the core stage for NASA’s Space Launch System rocket at Stennis Space Center in Mississippi was not completed as planned. The SLS is the vehicle meant to propel a crewed mission to the moon in 2024. Source: NASA Television

Among the executive orders President Trump issued during his last weeks in office was “Promoting Small Modular Reactors for National Defense and Space Exploration,” which builds on the Space Policy Directives published during his term. The order, issued on January 12, calls for actions within the next six months by NASA and the Department of Defense (DOD), together with the Department of Energy and other federal entities. Whether the Biden administration will retain some, all, or none of the specific goals of the Trump administration’s space nuclear policy remains to be seen, but one thing is very clear: If deep space exploration remains a priority, nuclear-powered and -propelled spacecraft will be needed.

The prospects for near-term deployment of nuclear propulsion and power systems in space improved during Trump’s presidency. However, Trump left office days after a hot fire test of NASA’s Space Launch System (SLS) rocket did not go as planned. The SLS rocket is meant to propel crewed missions to the moon in 2024 and to enable a series of long-duration lunar missions that could be powered by small lunar reactor installations. The test on January 16 of four engines that were supposed to fire for over eight minutes was automatically aborted after one minute, casting some doubt that a planned November 2021 Artemis I mission can go ahead on schedule.

A new research contract between the U.K. Space Agency and Rolls-Royce will see planetary scientists working together to explore nuclear power as an energy source for deep space missions in the decades to come. The effort is similar to one that the United States is undertaking through NASA.

"Space nuclear power and propulsion is a game-changing concept that could unlock future deep-space missions that take us to Mars and beyond," said Graham Turnock, chief executive of the U.K Space Agency, on January 12. "This study will help us understand the exciting potential of atomic-powered spacecraft, and whether this nascent technology could help us travel further and faster through space than ever before."

An artist’s impression of what a nuclear thermal ship built to take humans to Mars could look like. Photo: NASA

There are a lot of reasons that a faster spaceship is a better one, and nuclear-powered rockets are a way to achieve this, according to an article posted on the Conversation website on May 20.