Science

NASA, DARPA Will Test Nuclear Engine for Future Mars Missions

Published

2 years ago

January 24, 2023

Daily News Staff

draco 4 darpa nasa ussf caption 1 — Artist concept of Demonstration for Rocket to Agile Cislunar Operations (DRACO) spacecraft, which will demonstrate a nuclear thermal rocket engine. Nuclear thermal propulsion technology could be used for future NASA crewed missions to Mars.
***Credits: DARPA***

NASA and the Defense Advanced Research Projects Agency (DARPA) announced Tuesday a collaboration to demonstrate a nuclear thermal rocket engine in space, an enabling capability for NASA crewed missions to Mars.

NASA and DARPA will partner on the Demonstration Rocket for Agile Cislunar Operations, or DRACO, program. The non-reimbursable agreement designed to benefit both agencies, outlines roles, responsibilities, and processes aimed at speeding up development efforts.

“NASA will work with our long-term partner, DARPA, to develop and demonstrate advanced nuclear thermal propulsion technology as soon as 2027. With the help of this new technology, astronauts could journey to and from deep space faster than ever – a major capability to prepare for crewed missions to Mars,” said NASA Administrator Bill Nelson. “Congratulations to both NASA and DARPA on this exciting investment, as we ignite the future, together.”

Using a nuclear thermal rocket allows for faster transit time, reducing risk for astronauts. Reducing transit time is a key component human missions to Mars, as longer trips require more supplies and more robust systems. Maturing faster, more efficient transportation technology will help NASA meet its Moon to Mars Objectives.

Other benefits to space travel include increased science payload capacity and higher power for instrumentation and communication. In a nuclear thermal rocket engine, a fission reactor is used to generate extremely high temperatures. The engine transfers the heat produced by the reactor to a liquid propellant, which is expanded and exhausted through a nozzle to propel the spacecraft. Nuclear thermal rockets can be three or more times more efficient than conventional chemical propulsion.

“NASA has a long history of collaborating with DARPA on projects that enable our respective missions, such as in-space servicing,” said NASA Deputy Administrator Pam Melroy. “Expanding our partnership to nuclear propulsion will help drive forward NASA’s goal to send humans to Mars.”

Under the agreement, NASA’s Space Technology Mission Directorate (STMD) will lead technical development of the nuclear thermal engine to be integrated with DARPA’s experimental spacecraft. DARPA is acting as the contracting authority for the development of the entire stage and the engine, which includes the reactor. DARPA will lead the overall program including rocket systems integration and procurement, approvals, scheduling, and security, cover safety and liability, and ensure overall assembly and integration of the engine with the spacecraft. Over the course of the development, NASA and DARPA will collaborate on assembly of the engine before the in-space demonstration as early as 2027.

“DARPA and NASA have a long history of fruitful collaboration in advancing technologies for our respective goals, from the Saturn V rocket that took humans to the Moon for the first time to robotic servicing and refueling of satellites,” said Dr. Stefanie Tompkins, director, DARPA. “The space domain is critical to modern commerce, scientific discovery, and national security. The ability to accomplish leap-ahead advances in space technology through the DRACO nuclear thermal rocket program will be essential for more efficiently and quickly transporting material to the Moon and eventually, people to Mars.”

The last nuclear thermal rocket engine tests conducted by the United States occurred more than 50 years ago under NASA’s Nuclear Engine for Rocket Vehicle Application and Rover projects.

“With this collaboration, we will leverage our expertise gained from many previous space nuclear power and propulsion projects,” said Jim Reuter, associate administrator for STMD. “Recent aerospace materials and engineering advancements are enabling a new era for space nuclear technology, and this flight demonstration will be a major achievement toward establishing a space transportation capability for an Earth-Moon economy.”

NASA, the Department of Energy (DOE), and industry are also developing advanced space nuclear technologies for multiple initiatives to harness power for space exploration. Through NASA’s Fission Surface Power project, DOE awarded three commercial design efforts to develop nuclear power plant concepts that could be used on the surface of the Moon and, later, Mars.

NASA and DOE are working another commercial design effort to advance higher temperature fission fuels and reactor designs as part of a nuclear thermal propulsion engine. These design efforts are still under development to support a longer-range goal for increased engine performance and will not be used for the DRACO engine.

To learn more about STMD, please visit:

https://www.nasa.gov/spacetech

https://q5i.09c.myftpupload.com/category/science/

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Nature

“Dolphins: The Ocean’s Overachievers”

Published

2 days ago

February 1, 2025

Dolores Raphael

Ah, dolphins. The ocean’s golden retrievers. If the sea had a valedictorian, it would be a dolphin—wearing a tiny graduation cap, flipping its tail, and probably showing off by solving a Rubik’s Cube underwater. These marine marvels are the ultimate overachievers of the aquatic world, and frankly, they make the rest of us look bad.

“Dolphins: The Ocean’s Overachievers”

Dolphins

First off, dolphins are ridiculously smart. Scientists say they’re second only to humans in intelligence, which is both impressive and mildly insulting. I mean, have you ever seen a dolphin try to assemble IKEA furniture? No, because they’re too busy inventing underwater sonar and teaching each other how to use sponges as tools. Meanwhile, I’m over here struggling to open a bag of chips without ripping it in half.

And let’s talk about their social lives. Dolphins are the ultimate extroverts. They travel in pods, which is basically the ocean’s version of a group chat that never stops buzzing. They’re always playing, gossiping, and probably roasting each other about who’s the slowest swimmer. They even have names for each other! Can you imagine? “Hey, Flipper, pass the seaweed!” “Nice one, Bubbles, but I’m busy teaching this octopus how to high-five.”

But here’s the kicker: dolphins are also pranksters. They’ve been known to blow bubbles and then swim through them like it’s some kind of underwater TikTok trend. They’ll also play catch with pufferfish, not because they’re hungry, but because the pufferfish release toxins that give them a little “buzz.” That’s right—dolphins are out here getting high on pufferfish while the rest of us are debating whether pineapple belongs on pizza.

And don’t even get me started on their acrobatics. Dolphins can leap 20 feet out of the water, spin in midair, and land gracefully like they’re auditioning for Dancing with the Stars: Ocean Edition. Meanwhile, I trip over my own feet walking to the fridge.

So, what’s the takeaway here? Dolphins are smarter, cooler, and more fun than most of us will ever be. They’re the ocean’s MVP, and honestly, they know it. But hey, at least we have thumbs, right? …Oh wait, they’ve probably figured out how to use those too by now.

Stay salty, my friends. And if you see a dolphin, just bow. They deserve it. 🐬

For further reading on dolphin research, check out these related links:

https://royalsocietypublishing.org/doi/10.1098/rspb.2018.0948

https://www.wilddolphinproject.org/the-evolution-of-dolphin-research-embracing-new-technology/

https://manoa.hawaii.edu/news/article.php?aId=13420

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News

Understanding paranormal beliefs and conspiracy theories isn’t just about misinformation – this course unpacks the history

Published

3 days ago

January 30, 2025

The Conversation

paranormal — The ‘black mailbox’ along Highway 375 near Rachel, Nev., a traditional spot for UFO hunters to meet and search the skies near Area 51. AP Photo/John Locher

Jeb Card, Miami University

Uncommon Courses is an occasional series from The Conversation U.S. highlighting unconventional approaches to teaching.

Title of course:

“Investigating the Paranormal”

What prompted the idea for the course?

My training and professional work have been in Mesoamerican archaeology, but I’ve had a lifelong fascination with paranormal concepts. In fact, I considered studying the UFO community for my doctoral research in cultural anthropology.

I eventually fused these two interests in my book “Spooky Archaeology: Myth and the Science of the Past,” which examines why archaeology shows up so much in ideas about the mysterious and weird. Most people are familiar with pop culture characters like Indiana Jones seeking magical artifacts. Perhaps less immediately obvious is just how common archaeological topics are in paranormal and conspiracy culture.

The popularity of paranormal ideas – from television shows and thousands of podcasts to UFOs on the front page of The New York Times and in government investigations – made it clear that a course on paranormal culture would be an excellent way for students to get a taste of social science research.

What does the course explore?

The material begins with premodern ideas of magic, myth and metaphysics. The narrative that “Western” societies tell of the development of the modern world is that the Enlightenment cast off supernatural thinking in favor of science. The historical reality, however, is not so simple.

As science based on observation of material evidence emerged in the 17th through 19th centuries, so did a paranormal worldview: theories about a nonmaterial or hidden reality beyond the mundane, from monsters to psychic powers. Some of these ideas were tied to older religious notions of the sacred or strange but not divine phenomena. Others were new – particularly those suggesting the hidden existence of prehistoric extinct creatures or lost cities.

In either case, the key element was that proponents of these ideas often tried to support their existence with the kind of evidence used in science, though their “proofs” fell short of scientific standards. In other words, the paranormal is in conflict with the knowledge and worldview of modernity but also attempts to use the concepts of modernity to oppose it.

The class examines how this tension produced 20th century “-ologies” like parapsychology, which examines evidence for consciousness beyond matter, and cryptozoology, which searches the ends of the Earth for creatures tied to the mythic past. We also learn about UFOlogy, whose proponents have collected alleged contacts with technology and beings from beyond this world ever since the Cold War, as great earthly powers filled the skies with secretive hi-tech aircraft and spaceships.

As the class concludes, we examine how the “-ologies” declined after the Cold War, alongside the cultural capital of science, whose height of public respect was in the mid-20th century. Since then, proving the existence of paranormal things to institutional scientists has become less important in paranormal communities than promoting them to a broader public.

Why is this course relevant now?

Beyond public interest in paranormal topics, the paranormal is entwined with sociocultural forces that have dramatically increased the role of conspiracy rhetoric in the United States and elsewhere. At their core, both types of belief claim to have figured out some kind of supposedly hidden knowledge.

Furthermore, the conspiracy theories that are now commonplace in American political discourse are more rooted in paranormal ideas than in previous decades. Conspiracy theories about the JFK assassination or even 9/11 were still largely within the materialist realm. People argued that “the truth” had been covered up, but their arguments did not rely on metaphysical ideas. Today, major conspiracy theories involve secret cabals, mystical symbols and code words, demonic forces and extraterrestrial entities.

What’s a critical lesson from the course?

Evidence must be interrogated on its own, regardless of whether it fits your perspective. I find time and again that students have a hard time approaching evidence without bias, whether that bias is conscious or not: “knowing” that something must be true, or must be absurd.

One person apparently makes a death bed confession of faking a famous Loch Ness Monster photo, pleasing skeptics. Another claims to have seen a Bigfoot at close range, pleasing believers. Without further evidence, both are stories: no more, no less.

The issue isn’t to draw an equivalence between the bigger concepts. Not all narratives are equally well-founded. But students learn how to collect evidence, rather than simply rely on their gut sense of what is plausible or not.

What will the course prepare students to do?

This course is meant to help students discern useful and reliable information about claims and events, separating them from irrelevant or inaccurate narratives or sources. The goal is not just “critical thinking” aimed at combating disinformation, though that is part of what they should learn. Students practice evaluating evidence but also develop an approach for analyzing and understanding phenomena behind it: how factors like history, culture and institutions of authority, such as science and government, shape what people trust and what they believe.

Jeb Card, Associate Teaching Professor of Anthropology, Miami University

This article is republished from The Conversation under a Creative Commons license. Read the original article.

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Space and Tech

News Brief: Blue Origin’s New Glenn Successfully Reaches Orbit on Historic NG-1 Mission

Published

7 days ago

January 27, 2025

Rod Washington

Cape Canaveral, FL – January 16, 2025 – In a remarkable achievement for commercial spaceflight, Blue Origin’s New Glenn rocket successfully reached orbit during its inaugural NG-1 mission today, marking a significant milestone for the company and the industry. The rocket’s second stage performed flawlessly, completing two successful burns with the BE-3U engines, achieving its intended orbital parameters.

Dave Limp, CEO of Blue Origin, expressed his pride in the team’s accomplishment, stating, “New Glenn achieved orbit on its first attempt! We set out with ambitious goals, and while we lost our booster during descent, we gained invaluable insights from today’s mission.” Limp highlighted the importance of New Glenn in supporting critical missions for customers, including NASA’s Artemis program, which aims to establish a sustained human presence on the Moon.

New Glenn

The New Glenn vehicle is pivotal for Blue Origin’s future launches, including the Blue Moon Mark 1 cargo lander and the Mark 2 crewed lander, which will serve NASA’s lunar objectives. In addition, the company is seeing strong demand, with various vehicles in production and a growing list of customers like NASA, Amazon’s Project Kuiper, and AST SpaceMobile.

Jarrett Jones, Senior Vice President of New Glenn, remarked on the significance of the day, saying, “Today marks a new era for Blue Origin and for commercial space. We’re ramping our launch cadence and are incredibly grateful to everyone at Blue Origin, our customers, and the space community for their unwavering support.”

The launch, which took place at 2:03 a.m. EST from Launch Complex 36, signals the beginning of a formidable era in Blue Origin’s operations as it seeks to connect its missions with emerging national security objectives through certification from the U.S. Space Force.

Blue Origin plans to conduct further missions with New Glenn, expanding its role in the growing landscape of space exploration and resource utilization. The company is focused on learning from today’s endeavor and aims to return for another launch attempt this spring.

Stay tuned for more updates on Blue Origin’s ambitious journeys ahead!