Members Can Post Anonymously On This Site
-
Similar Topics
-
By NASA
4 Min Read Navigation Technology
ESA astronaut Matthias Maurer sets up an Astrobee for the ReSWARM experiment. Credits: NASA Science in Space April 2025
Humans have always been explorers, venturing by land and sea into unknown and uncharted places on Earth and, more recently, in space. Early adventurers often navigated by the Sun and stars, creating maps that made it easier for others to follow. Today, travelers on Earth have sophisticated technology to guide them.
Navigation in space, including for missions to explore the Moon and Mars, remains more of a challenge. Research on the International Space Station is helping NASA scientists improve navigation tools and processes for crewed spacecraft and remotely controlled or autonomous robots to help people boldly venture farther into space, successfully explore there, and safely return home.
NASA astronaut Nichole Ayers talks to students on the ground using ham radio equipment.NASA A current investigation, NAVCOM, uses the space station’s ISS Ham Radio program hardware to test software for a system that could shape future lunar navigation. The technology processes signals in the same way as global navigation satellite systems such as GPS, but while those rely on constellations of satellites, the NAVCOM radio equipment receives position and time information from ground stations and reference clocks.
The old made new
ESA astronaut Alexander Gerst operates the Sextant Navigation device.NASA Sextant Navigation tested star-sighting from space using a hand-held sextant. These mechanical devices measure the angle between two objects, typically the Sun or other stars at night and the horizon. Sextants guided navigators on Earth for centuries and NASA’s Gemini and Apollo missions demonstrated that they were useful in space as well, meaning they could provide emergency backup navigation for lunar missions. Researchers report that with minimal training and practice, crew members of different skill levels produced quality sightings through a station window and measurements improved with more use. The investigation identified several techniques for improving sightings, including refocusing between readings and adjusting the sight to the center of the window.
Navigating by neutron stars
The station’s NICER instrument studies the nature and behavior of neutron stars, the densest objects in the universe. Some neutron stars, known as pulsars, emit beams of light that appear to pulse, sweeping across the sky as the stars rotate. Some of them pulse at rates as accurate as atomic clocks. As part of the NICER investigation, the Station Explorer for X-ray Timing and Navigation Technology or SEXTANT tested technology for using pulsars in GPS-like systems to navigate anywhere in the solar system. SEXTANT successfully completed a first in-space demonstration of this technology in 2017. In 2018, researchers reported that real-time, autonomous X-ray pulsar navigation is clearly feasible and they plan further experiments to fine tune and modify the technology.
Robot navigation
Crews on future space exploration missions need efficient and safe ways to handle cargo and to move and assemble structures on the surface of the Moon or Mars. Robots are promising tools for these functions but must be able to navigate their surroundings, whether autonomously or via remote control, often in proximity with other robots and within the confines of a spacecraft. Several investigations have focused on improving navigation by robotic helpers.
NASA astronaut Michael Barratt (left) and JAXA astronaut Koichi Wakata perform a check of the SPHERES robots.NASA The SPHERES investigation tested autonomous rendezvous and docking maneuvers with three spherical free-flying robots on the station. Researchers reported development of an approach to control how the robots navigate around obstacles and along a designated path, which could support their use in the future for satellite servicing, vehicle assembly, and spacecraft formation flying.
NASA astronaut Megan McArthur with the three Astrobee robots.NASA The station later gained three cube-shaped robots known as Astrobees. The ReSWARM experiments used them to test coordination of multiple robots with each other, cargo, and their environment. Results provide a base set of planning and control tools for robotic navigation in close proximity and outline important considerations for the design of future autonomous free-flyers.
Researchers also used the Astrobees to show that models to predict the robots’ behavior could make it possible to maneuver one or two of them for carrying cargo. This finding suggests that robots can navigate around each other to perform tasks without a human present, which would increase their usefulness on future missions.
ESA astronaut Samantha Cristoforetti working on the Surface Avatar experiment.ESA An investigation from ESA (European Space Agency), Surface Avatar evaluated orbit-to-ground remote control of multiple robots. Crew members successfully navigated a four-legged robot, Bert, through a simulated Mars environment. Robots with legs rather than wheels could explore uneven lunar and planetary surfaces that are inaccessible to wheeled rovers. The German Aerospace Center is developing Bert.
View the full article
-
-
By NASA
3 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
The C-20A aircraft, based at NASA’s Armstrong Flight Research Center in Edwards, California, flies over the Sierra Nevada Mountains in California for the Dense UAVSAR Snow Time (DUST) mission on Feb. 28, 2025. The DUST mission collected airborne data about snow water to help improve water management and reservoir systems on the ground.NASA/Starr Ginn As part of a science mission tracking one of Earth’s most precious resources – water – NASA’s C-20A aircraft conducted a series of seven research flights in March that can help researchers track the process and timeline as snow melts and transforms into a freshwater resource. The agency’s Uninhabited Aerial Vehicle Synthetic Aperture Radar (UAVSAR) installed on the aircraft collected measurements of seasonal snow cover and estimate the freshwater contained in it.
“Seasonal snow is a critical resource for drinking water, power generation, supporting multi-billion dollar agricultural and recreation industries,” said Starr Ginn, C-20A project manager at NASA’s Armstrong Flight Research Center in Edwards, California. “Consequently, understanding the distribution of seasonal snow storage and subsequent runoff is essential.”
The Dense UAVSAR Snow Time (DUST) mission mapped snow accumulation over the Sierra Nevada mountains in California and the Rocky Mountains in Idaho. Mission scientists can use these observations to estimate the amount of water stored in that snow.
Peter Wu, radar operator from NASA’s Jet Propulsion Laboratory in Southern California, observes data collected during the Dense UAVSAR Snow Time (DUST) mission onboard NASA’s C-20A aircraft on Feb. 28, 2025. The C-20A flew from NASA’s Armstrong Flight Research Center in Edwards, California, over the Sierra Nevada Mountains to collect data about snow water.NASA/Starr Ginn “Until recently, defining the best method for accurately measuring snow water equivalent (SWE) – or how much and when fresh water is converted from snow – has been a challenge,” said Shadi Oveisgharan, principal investigator of DUST and scientist at NASA’s Jet Propulsion Laboratory in Southern California. “The UAVSAR has been shown to be a good instrument to retrieve SWE data.”
Recent research has shown that snow properties, weather patterns, and seasonal conditions in the American West have been shifting in recent decades. These changes have fundamentally altered previous expectations about snowpack monitoring and forecasts of snow runoff. The DUST mission aims to better track and understand those changes to develop more accurate estimates of snow-to-water conversions and their timelines.
“We are trying to find the optimum window during which to retrieve snow data,” Oveisgharan said. “This estimation will help us better estimate available fresh snow and manage our reservoirs better.”
The Dense UAVSAR Snow Time (DUST) mission team assembles next to the C-20A aircraft at NASA’s Armstrong Flight Research Center in Edwards, California, on Feb. 28, 2025. From left, radar operator Adam Vaccaro, avionics lead Kelly Jellison, C-20A project manager Starr Ginn, pilot Carrie Worth, pilot Troy Asher, aircraft mechanic Eric Apikian, and operations engineer Ian Elkin.NASA/Starr Ginn The DUST mission achieved a new level of snow data accuracy, which is partly due to the specialized flight paths flown by the C-20A. The aircraft’s Platform Precision Autopilot (PPA) enables the team to fly very specific routes at exact altitudes, speeds, and angles so the UAVSAR can more precisely measure terrain changes.
“Imagine the rows made on grass by a lawn mower,” said Joe Piotrowski Jr., operations engineer for NASA Armstrong’s airborne science program. “The PPA system enables the C-20A to make those paths while measuring terrain changes down to the diameter of a centimeter.”
Share
Details
Last Updated Apr 24, 2025 EditorDede DiniusContactErica HeimLocationArmstrong Flight Research Center Related Terms
Armstrong Flight Research Center Airborne Science C-20A Earth Science Earth's Atmosphere Jet Propulsion Laboratory Science Mission Directorate Explore More
6 min read NASA Tests Key Spacesuit Parts Inside This Icy Chamber
Article 5 hours ago 2 min read 2025 EGU Hyperwall Schedule
EGU General Assembly, April 27 – May 2, 2025 Join NASA in the Exhibit Hall…
Article 7 hours ago 5 min read NASA Airborne Sensor’s Wildfire Data Helps Firefighters Take Action
Article 1 day ago Keep Exploring Discover More Topics From NASA
Armstrong Flight Research Center
Humans in Space
Climate Change
Solar System
View the full article
-
By NASA
The New York Stock Exchange welcomed team members from NASA’s SPHEREx (Spectro-Photometer for the History of the Universe, Epoch of Reionization and Ices Explorer) mission to celebrate the launch of the agency’s newest astrophysics observatory to understand the origins and structure of the universe. Image courtesy of NYSE Group Members of NASA’s recently launched SPHEREx (Spectro-Photometer for the History of the Universe, Epoch of Reionization and Ices Explorer) mission team participated in the New York Stock Exchange’s closing bell ceremony in New York City on April 22.
Michael Thelen, SPHEREx flight system manager at NASA’s Jet Propulsion Laboratory in Southern California, is seen here ringing the closing bell. Additional SPHEREx team members from NASA JPL, which manages the mission, and BAE Systems Inc., Space & Mission Systems, which built the telescope and spacecraft bus for NASA, participated.
The SPHEREx observatory, which launched March 11 from Vandenberg Space Force Base in California on a SpaceX Falcon 9 rocket, will soon begin mapping the universe like none before it. Using 102 color filters to scan the entire sky quickly, SPHEREx will gather data on hundreds of millions of galaxies that will complement the work of more targeted telescopes, like NASA’s Hubble and James Webb space telescopes. Its surveys will help answer some of the biggest questions in astrophysics: what happened in the first second after the big bang, how galaxies form and evolve, and the origins and abundance of water and other key ingredients for life in our galaxy.
Michael P. Thelen, SPHEREx Observatory Flight System Manager, rings the bell alongside NASA SPHEREx team members at the New York Stock Exchange Tuesday, April 25, 2025. Image courtesy of NYSE Group More About SPHEREx
SPHEREx is managed by JPL for NASA’s Astrophysics Division within the Science Mission Directorate in Washington. BAE Systems (formerly Ball Aerospace) built the telescope and the spacecraft bus. The science analysis of the SPHEREx data will be conducted by a team of scientists located at 10 institutions across the U.S. and in South Korea. Data will be processed and archived at IPAC at Caltech, which manages JPL for NASA. The mission principal investigator is based at Caltech with a joint JPL appointment. The SPHEREx dataset will be publicly available.
For more information on SPHEREx, visit:
https://www.nasa.gov/spherex
News Media Contacts
Alise Fisher
NASA Headquarters, Washington
202-358-2546
alise.m.fisher@nasa.gov
Calla Cofield
Jet Propulsion Laboratory, Pasadena, Calif.
626-808-2469
calla.e.cofield@jpl.nasa.gov
View the full article
-
By NASA
2 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
A Boeing-built X-66 full-span model underwent testing in the 11-Foot Transonic Unitary Plan Facility at NASA’s Ames Research Center in California’s Silicon Valley between January and March 2025.NASA / Brandon Torres NASA and Boeing are currently evaluating an updated approach to the agency’s Sustainable Flight Demonstrator project that would focus on demonstrating thin-wing technology with broad applications for multiple aircraft configurations.
Boeing’s proposed focus centers on a ground-based testbed to demonstrate the potential for long, thin-wing technology. Work on the X-66 flight demonstrator – which currently incorporates a more complex transonic truss braced wing concept that uses the same thin wing technology as well as aerodynamic, structural braces — would pause for later consideration based on the thin-wing testbed results and further truss-braced configuration studies.
Under this proposal, all aspects of the X-66 flight demonstrator’s design, as well as hardware acquired or modified for it, would be retained while the long, thin-wing technology is being investigated with more focus. NASA and Boeing would also continue to collaborate on research into the transonic truss-braced wing concept.
The proposal is based on knowledge gained through research conducted under the Sustainable Flight Demonstrator project so far.
Since NASA issued the Sustainable Flight Demonstrator award in 2023, the project has made significant progress toward its goal of informing future generations of more sustainable commercial airliners. Boeing and NASA have collaborated on wind tunnel tests, computational fluid dynamics modeling, and structural design and analysis aimed at exploring how best to approach fuel-efficient, sustainable designs.
This research has built confidence in the substantial potential energy-savings benefits that technologies investigated through the Sustainable Flight Demonstrator project and other NASA research can make possible. The Boeing proposal identifies the thin-wing concept as having broad applications for potential incorporation into aircraft with and without truss braces.
NASA and Boeing are discussing potential options for advancing these sustainable flight technologies. NASA’s ultimate goal for this sustainable aircraft research is to achieve substantial improvements for next-generation airliner efficiency, lower costs for travelers, reduced fuel costs and consumption, and increase U.S. aviation’s technological leadership.
Facebook logo @NASA@NASAaero@NASA_es @NASA@NASAaero@NASAes Instagram logo @NASA@NASAaero@NASAes Linkedin logo @NASA Explore More
4 min read NASA Tests Ultralight Antennas to Benefit Future National Airspace
Article 2 days ago 2 min read A Fond Farewell: NASA’s C-130 Begins New Mission in California
Article 6 days ago 3 min read NASA Studies Wind Effects and Aircraft Tracking with Joby Aircraft
Article 7 days ago Keep Exploring Discover More Topics From NASA
Missions
Sustainable Flight Demonstrator Project
Aeronautics STEM
Explore NASA’s History
Share
Details
Last Updated Apr 24, 2025 EditorLillian GipsonContactRobert Margettarobert.j.margetta@nasa.gov Related Terms
Aeronautics Aeronautics Research Mission Directorate Green Aviation Tech Integrated Aviation Systems Program Sustainable Flight Demonstrator View the full article
-
-
Check out these Videos
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.