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NASA’s Hubble, New Horizons Team Up for a Simultaneous Look at Uranus
NASA’s Hubble Space Telescope (left) and NASA’s New Horizon’s spacecraft (right) images the planet Uranus. NASA, ESA, STScI, Samantha Hasler (MIT), Amy Simon (NASA-GSFC), New Horizons Planetary Science Theme Team; Image Processing: Joseph DePasquale (STScI), Joseph Olmsted (STScI)
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NASA’s Hubble Space Telescope and New Horizons spacecraft simultaneously set their sights on Uranus recently, allowing scientists to make a direct comparison of the planet from two very different viewpoints. The results inform future plans to study like types of planets around other stars.
Astronomers used Uranus as a proxy for similar planets beyond our solar system, known as exoplanets, comparing high-resolution images from Hubble to the more-distant view from New Horizons. This combined perspective will help scientists learn more about what to expect while imaging planets around other stars with future telescopes.
“While we expected Uranus to appear differently in each filter of the observations, we found that Uranus was actually dimmer than predicted in the New Horizons data taken from a different viewpoint,” said lead author Samantha Hasler of the Massachusetts Institute of Technology in Cambridge and New Horizons science team collaborator.
In this image, two three-dimensional shapes (top) of Uranus are compared to the actual views of the planet from NASA’s Hubble Space Telescope (bottom left) and NASA’s New Horizon’s spacecraft (bottom right). Comparing high-resolution images from Hubble to the smaller view from New Horizons offers a combined perspective that will help researchers learn more about what to expect while imaging planets around other stars with future observatories. NASA, ESA, STScI, Samantha Hasler (MIT), Amy Simon (NASA-GSFC), New Horizons Planetary Science Theme Team; Image Processing: Joseph DePasquale (STScI), Joseph Olmsted (STScI)
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Direct imaging of exoplanets is a key technique for learning about their potential habitability, and offers new clues to the origin and formation of our own solar system. Astronomers use both direct imaging and spectroscopy to collect light from the observed planet and compare its brightness at different wavelengths. However, imaging exoplanets is a notoriously difficult process because they’re so far away. Their images are mere pinpoints and so are not as detailed as the close-up views that we have of worlds orbiting our Sun. Researchers can also only directly image exoplanets at “partial phases,” when only a portion of the planet is illuminated by their star as seen from Earth.
Uranus was an ideal target as a test for understanding future distant observations of exoplanets by other telescopes for a few reasons. First, many known exoplanets are also gas giants similar in nature. Also, at the time of the observations, New Horizons was on the far side of Uranus, 6.5 billion miles away, allowing its twilight crescent to be studied—something that cannot be done from Earth. At that distance, the New Horizons view of the planet was just several pixels in its color camera, called the Multispectral Visible Imaging Camera.
On the other hand, Hubble, with its high resolution, and in its low-Earth orbit 1.7 billion miles away from Uranus, was able to see atmospheric features such as clouds and storms on the day side of the gaseous world.
“Uranus appears as just a small dot on the New Horizons observations, similar to the dots seen of directly-imaged exoplanets from observatories like Webb or ground-based observatories,” added Hasler. “Hubble provides context for what the atmosphere is doing when it was observed with New Horizons.”
The gas giant planets in our solar system have dynamic and variable atmospheres with changing cloud cover. How common is this among exoplanets? By knowing the details of what the clouds on Uranus looked like from Hubble, researchers are able to verify what is interpreted from the New Horizons data. In the case of Uranus, both Hubble and New Horizons saw that the brightness did not vary as the planet rotated, which indicates that the cloud features were not changing with the planet’s rotation.
However, the importance of the detection by New Horizons has to do with how the planet reflects light at a different phase than what Hubble, or other observatories on or near Earth, can see. New Horizons showed that exoplanets may be dimmer than predicted at partial and high phase angles, and that the atmosphere reflects light differently at partial phase.
NASA has two major upcoming observatories in the works to advance studies of exoplanet atmospheres and potential habitability.
“These landmark New Horizons studies of Uranus from a vantage point unobservable by any other means add to the mission’s treasure trove of new scientific knowledge, and have, like many other datasets obtained in the mission, yielded surprising new insights into the worlds of our solar system,” added New Horizons principal investigator Alan Stern of the Southwest Research Institute.
This illustration shows NASA’s New Horizons spacecraft’s view of our solar system from deep in the Kuiper Belt. New Horizons is currently at an estimated distance of more than 5 billion miles from Earth. The probe was 6.5 billion miles away from Uranus when it recently observed the planet. In this study, researchers used the gas giant as an exoplanet proxy, comparing high-resolution images from NASA’s Hubble Space Telescope to the smaller view from New Horizons to learn more about what to expect while imaging planets around other stars. NASA, ESA, Christian Nieves (STScI), Ralf Crawford (STScI), Greg Bacon (STScI)
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NASA’s upcoming Nancy Grace Roman Space Telescope, set to launch by 2027, will use a coronagraph to block out a star’s light to directly see gas giant exoplanets. NASA’s Habitable Worlds Observatory, in an early planning phase, will be the first telescope designed specifically to search for atmospheric biosignatures on Earth-sized, rocky planets orbiting other stars.
“Studying how known benchmarks like Uranus appear in distant imaging can help us have more robust expectations when preparing for these future missions,” concluded Hasler. “And that will be critical to our success.”
Launched in January 2006, New Horizons made the historic flyby of Pluto and its moons in July 2015, before giving humankind its first close-up look at one of these planetary building block and Kuiper Belt object, Arrokoth, in January 2019. New Horizons is now in its second extended mission, studying distant Kuiper Belt objects, characterizing the outer heliosphere of the Sun, and making important astrophysical observations from its unmatched vantage point in distant regions of the solar system.
The Uranus results are being presented this week at the 56th annual meeting of the American Astronomical Society Division for Planetary Sciences, in Boise, Idaho.
The Hubble Space Telescope has been operating for over three decades and continues to make ground-breaking discoveries that shape our fundamental understanding of the universe. Hubble is a project of international cooperation between NASA and ESA (European Space Agency). NASA’s Goddard Space Flight Center in Greenbelt, Maryland, manages the telescope and mission operations. Lockheed Martin Space, based in Denver, Colorado, also supports mission operations at Goddard. The Space Telescope Science Institute in Baltimore, Maryland, which is operated by the Association of Universities for Research in Astronomy, conducts Hubble science operations for NASA.
The Johns Hopkins Applied Physics Laboratory (APL) in Laurel, Maryland, built and operates the New Horizons spacecraft and manages the mission for NASA’s Science Mission Directorate. Southwest Research Institute, based in San Antonio and Boulder, Colorado, directs the mission via Principal Investigator Alan Stern and leads the science team, payload operations and encounter science planning. New Horizons is part of NASA’s New Frontiers program, managed by NASA’s Marshall Space Flight Center in Huntsville, Alabama.
Facebook logo @NASAHubble @NASAHubble Instagram logo @NASAHubble Media Contacts:
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Massachusetts Institute of Technology, Cambridge, MA
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Last Updated Oct 09, 2024 Editor Andrea Gianopoulos Location NASA Goddard Space Flight Center Related Terms
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Hubble Space Telescope
Since its 1990 launch, the Hubble Space Telescope has changed our fundamental understanding of the universe.
New Horizons
New Horizons was the first spacecraft to explore Pluto and its five moons up close and, later, made the first…
Studying the Outer Planets and Moons
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How Do Astronauts Get in Shape? – New “Ask SME” from NASA eClips
The NASA Science Activation program’s NASA eClips project, led by the National Institute of Aerospace (NIA), aims to increase Science, Technology, Engineering, & Mathematics (STEM) literacy and inspire the next generation of engineers and scientists by providing effective web-based, standards-aligned, in-school and out-of-school learning and teaching resources through the lens of NASA.
As a part of this work, NASA eClips professionally produces the Ask SME: Close-up With a NASA Subject Matter Expert video series to capture a glimpse of NASA SME’s personal interests and career journeys. Each video can be used to spark student interest and broaden their ideas of who the Science, Technology, Engineering, and Mathematics (STEM) workforce might include (everyone!) and the kinds of work they do.
On September 19, 2024, NASA eClips released the most recent video in the Ask SME series, featuring Corey Twine from NASA’s Johnson Space Center. Twine is an Astronaut Strength and Conditioning Specialist who works with astronauts to keep them physically fit for work on Earth and while they are in space. He shares insights about how he helps the astronauts and what inspired him to pursue this career.
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NASA eClips is supported by NASA under cooperative agreement award number NNX16AB91A and is part of NASA’s Science Activation Portfolio. Learn more about how Science Activation connects NASA science experts, real content, and experiences with community leaders to do science in ways that activate minds and promote deeper understanding of our world and beyond: https://science.nasa.gov/learn
SME Corey Twine, Astronaut Strength & Conditioning Specialist Share
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Preparations for Next Moonwalk Simulations Underway (and Underwater)
A recent NASA-funded study quantified higher levels of fine particulate air pollution near Southern California warehouses, a result of emissions from diesel trucks that transport goods to and from such facilities. Inhalation of these tiny particles can cause serious health problems.Adobe Stock/Matt Gush Satellite-based data offers a broad view of particulate air pollution patterns across a major West Coast e-commerce hub.
As goods of all shapes and sizes journey from factory to doorstep, chances are they’ve stopped at a warehouse along the way — likely several of them. The sprawling structures are waypoints in the logistics networks that make e-commerce possible. Yet the convenience comes with tradeoffs, as illustrated in a recent NASA-funded study.
Published in the journal GeoHealth, the research analyzes patterns of particulate pollution in Southern California and found that ZIP codes with more or larger warehouses had higher levels of contaminants over time than those with fewer or smaller warehouses. Researchers focused on particulate pollution, choosing Southern California because it is a major distribution hub for goods: Its ports handle 40% of cargo containers entering the country.
The buildings themselves are not the major particulate sources. Rather, it’s the diesel trucks that pick up and drop off goods, emitting exhaust containing toxic particles called PM2.5. At 2.5 micrometers or less, these pollutants can be inhaled into the lungs and absorbed into the bloodstream. Although atmospheric concentrations are typically so small they’re measured in millionths of a gram per cubic meter, the authors caution that there’s no safe exposure level for PM2.5.
“Any increase in concentration causes some health damage,” said co-author Yang Liu, an environmental health researcher at Emory University in Atlanta. “But if you can curb pollution, there will be a measurable health benefit.”
A data visualization shows the average concentration of PM2.5 particulate pollution in the Los Angeles region from 2000 to 2018, along with the locations of nearly 11,000 warehouses. Darker red indicates higher concentration of these toxic particles; small black circles represent warehouse locations.NASA Earth Observatory Growing Air Quality Research
Particulate pollution has been linked to respiratory and cardiovascular diseases, some cancers, and adverse birth outcomes, including premature birth and low infant birth weight.
The new study is part of a broader effort funded by the NASA Health and Air Quality Applied Sciences Team to use satellite data to understand how air pollution disproportionately affects underserved communities.
As the e-commerce boom of recent decades has spurred warehouse construction, pollution in nearby neighborhoods has become a growing area for research. New structures have often sprouted on relatively inexpensive land, which tends to be home to low-income or minority populations who bear the brunt of the poor air quality, Liu said.
Another recent NASA-funded study analyzed satellite-derived nitrogen dioxide (NO2) measurements around 150,000 United States warehouses. It found that concentrations of the gas, which is a diesel byproduct and respiratory irritant, were about 20% higher near warehouses.
Distribution Hub
For the GeoHealth paper, scientists drew on previously generated datasets of PM2.5 from 2000 to 2018 and elemental carbon, a type of PM2.5 in diesel emissions, from 2000 to 2019. The data came from models based on satellite observations, including some from NASA’s MODIS (Moderate Resolution Imaging Spectroradiometer) and ASTER (Advanced Spaceborne Thermal Emission and Reflection Radiometer) instruments.
The researchers also mined a real estate database for the square footage as well as the number of loading docks and parking spaces at nearly 11,000 warehouses across portions of Los Angeles, Riverside, and San Bernardino counties, and all of Orange County.
They found that warehouse capacity correlated with pollution. ZIP codes in the 75th percentile of warehouse square footage had 0.16 micrograms per cubic meter more PM2.5 and 0.021 micrograms per cubic meter more elemental carbon than those in the 25th percentile.
Similarly, ZIP codes in the 75th percentile of number of loading docks had 0.10 micrograms per cubic meter more PM2.5 and 0.014 micrograms per cubic meter more elemental carbon than those in the 25th percentile. And ZIP codes in the 75th percentile of truck parking spaces had 0.21 micrograms per cubic meter more PM2.5 and 0.021 micrograms per cubic meter more elemental carbon than those in the 25th percentile.
“We found that warehouses are associated with PM2.5 and elemental carbon,” said lead author Binyu Yang, an Emory environmental health doctoral student.
Although particulate pollution fell from 2000 to 2019 due to stricter emissions standards, the concentrations in ZIP codes with warehouses remained consistently higher than for other areas.
Researchers also found that the gaps widened in the holiday shopping season, up to 4 micrograms per cubic meter — “a significant difference,” Liu said.
Satellites Provide Big Picture
Satellite observations, the researchers said, were essential because they provided a continuous map of pollution, including pockets not covered by ground-based instruments.
It’s the same motivation behind NASA’s TEMPO (Tropospheric Emissions: Monitoring of Pollution) mission, which launched in April 2023 and measures air pollution hourly during daylight over North America. The release of TEMPO’s first maps showed higher concentrations of NO2 around cities and highways.
Meanwhile, NASA and the Italian Space Agency are collaborating to launch the MAIA (Multi-Angle Imager for Aerosols) in 2026. It will be the first NASA satellite mission whose primary goal is to study health effects of particulate pollution while distinguishing between PM2.5 types.
“This mission will help air quality managers and policymakers conceive more targeted pollution strategies,” said Sina Hasheminassab, a co-author and science systems engineer at NASA’s Jet Propulsion Laboratory in Southern California. Hasheminassab, like Liu, is a member of the MAIA science team.
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3 min read Connected Learning Ecosystems: Educators Learning and Growing Together
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Preparations for Next Moonwalk Simulations Underway (and Underwater)
This video shows IPEx in the digital simulation environment.Credit: Johns Hopkins APL/Steve Gribben/Beverly Jensen Space is hard, but it’s not all hardware.
The new Lunar Autonomy Challenge invites teams of students from U.S. colleges and universities to test their software development skills. Working entirely in virtual simulations of the Moon’s surface, teams will develop an autonomous agent using software that can accomplish pre-defined tasks without help from humans. These agents will be used to navigate a digital twin of NASA’s ISRU Pilot Excavator (IPEx) and map specified locations in the digital environment. The IPEx is an autonomous mobility robot engineered to efficiently collect and transport lunar regolith, the loose rocky material on the Moon’s surface.
Autonomous systems allow spacecraft, rovers, and robots to operate without relying on constant contact with astronauts or mission control. Before hardware is trusted to operate independently on location, which for Artemis missions includes the Moon, it must be tested virtually. High-fidelity virtual simulations allow NASA to anticipate and improve how systems, both software and hardware, will function in the physical world. Testing in virtual simulations also allows technologists to explore different mission scenarios, observe potential outcomes, and reduce risks.
In the Lunar Autonomy Challenge, students will develop their knowledge of autonomous systems by working with the same simulation tools created in-house by Caterpillar Inc. of Irving, Texas, over decades of research and development. Teams will need to utilize the IPEx digital twin’s cameras and orientation sensors to accurately map surface elevation and identify obstacles. Like with real lunar missions, teams must also manage their energy usage and consider the Moon’s harsh terrain and low-light conditions. Through the competition, participants will learn more about autonomous robotic operation, surface mapping, localization, orientation, path planning, and hazard detection.
Eligibility
Teams must be comprised of at least four undergraduate and/or graduate students and a faculty advisor at a U.S. college or university.
Challenge Timeline & Structure
The challenge will take place between November 2024 and May 2025 and will include both a qualifying round and a final round. Interested teams must apply by Thursday, Nov. 7.
Round 1: Selected teams will develop and train their agent using provided virtual environments. Teams will have three opportunities to submit their agent to run in a qualification environment. For each submission, their agent will be scored based on performance.
The top scoring teams will be invited to continue. Round 2: Teams will work to further refine the agents. Teams will have multiple opportunities in total to submit their agents to the competition environment. The top three teams will be named challenge winners. Challenge Guidelines
Interested teams should carefully review the Challenge Guidelines and the Lunar Autonomy Challenge site for more details, including proposal requirements, FAQs, and additional technical guidance.
Prizes
The top three highest-scoring teams on the leaderboard in the finals will be awarded cash prizes:
First Place: $10,000
Second Place: $5,000
Third Place: $3,000
Application Submissions
Applications must be submitted to NASA STEM Gateway by Nov. 7, 2024.
Learn more about the challenge: https://lunar-autonomy-challenge.jhuapl.edu
The Lunar Autonomy Challenge is a collaboration between NASA, The Johns Hopkins University (JHU) Applied Physics Laboratory (APL), Caterpillar Inc., and Embodied AI. APL is managing the challenge for NASA.
NASA’s ISRU Pilot Excavator (IPEx) during a flight-like demonstration at NASA’s Kennedy Space Center’s Swamp Works testing facility. Credit: NASA Authored by: Stephanie Yeldell, Education Integration Lead
Space Technology Mission Directorate
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By NASA
A preview image of the Minecraft world inspired by NASA’s James Webb Space Telescope. Credit: Minecraft NASA invites gamers, educators, and students to grab their pickaxe and check out its latest collaboration with Minecraft exploring a new world inspired by the agency’s James Webb Space Telescope. The partnership allows creators to experience NASA’s discoveries with interactive modules on star formation, planets, and galaxy types, modeled using real Webb images.
The James Webb Space Telescope Challenges were developed to inspire the next generation of scientists, engineers, and technicians. Through the game, students can immerse themselves in the science and technology behind Webb, deepening their understanding of NASA’s mission and sparking an interest in the real-world applications of science, technology, engineering, and math (STEM).
“We’re thrilled to bring the wonders and science of NASA’s James Webb Space Telescope into the hands of the Artemis Generation through this exciting Minecraft collaboration,” said NASA Deputy Administrator Pam Melroy. “This collaboration is yet another way anyone can join NASA as we explore the secrets of the universe and solve the world’s most complex problems, making space exploration engaging for learners of all ages.”
NASA’s James Webb Space Telescope launched to space Dec. 25, 2021, and has gone on to make detailed observations of the planets within our own solar system, peer into the atmospheres of planets orbiting other stars outside our solar system, and capture images and spectra of the most distant galaxies ever detected.
“NASA’s collaboration with Minecraft allows players to experience the excitement of one of the most ambitious space missions ever,” said Mike Davis, Webb project manager at NASA’s Goddard Space Flight Center in Greenbelt, Maryland. “No matter where Webb looks, it sees something intriguing, setting the stage for amazing discoveries yet to come. As people explore the Minecraft world of Webb, we hope they will be inspired to carry that interest further and maybe someday help NASA build future space telescopes.”
Webb is the world’s premier space science observatory. The space telescope is solving mysteries in our solar system, looking beyond to distant worlds around other stars, and probing the mysterious structures and origins of our universe and our place in it. Webb is an international program led by NASA with its partners, ESA (European Space Agency) and CSA (Canadian Space Agency).
NASA’s Office of STEM Engagement provides unique opportunities for students to learn about STEM. In 2023, NASA partnered with Minecraft on an Artemis Challenge where users could build and launch a rocket, guide their Orion spacecraft, and even establish a lunar base alongside their team. Through collaboration with partners such as Microsoft, NASA can share the excitement of space exploration with even more students who are part of the Artemis Generation.
Learn more about how NASA’s Office of STEM Engagement is inspiring the next generation of explorers at:
https://www.nasa.gov/stem
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