The NASA project NEOWISE, which has given astronomers a detailed view of near-Earth objects – some of which could strike the Earth – ended its mission and burned on reentering the atmosphere after over a decade.
On a clear night, the sky is full of bright objects – from stars, large planets and galaxies to tiny asteroids flying near Earth. These asteroids are commonly known as near-Earth objects, and they come in a wide variety of sizes. Some are tens of kilometers across or larger, while others are only tens of meters or smaller.
On occasion, near-Earth objects smash into Earth at a high speed – roughly 10 miles per second (16 kilometers per second) or faster. That’s about 15 times as fast as a rifle’s muzzle speed. An impact at that speed can easily damage the planet’s surface and anything on it.
Impacts from large near-Earth objects are generally rare over a typical human lifetime. But they’re more frequent on a geological timescale of millions to billions of years. The best example may be a 6-mile-wide (10-kilometer-wide) asteroid that crashed into Earth, killed the dinosaurs and created Chicxulub crater about 65 million years ago.
Smaller impacts are very common on Earth, as there are more small near-Earth objects. An international community effort called planetary defense protects humans from these space intruders by cataloging and monitoring as many near-Earth objects as possible, including those closely approaching Earth. Researchers call the near-Earth objects that could collide with the surface potentially hazardous objects.
NEOWISE contributed to planetary defense efforts with its research to catalog near-Earth objects. Over the past decade, it helped planetary defenderslike us and our colleagues study near-Earth objects.NASA’s NEOWISE mission, the spacecraft for which is shown here, surveyed for near-Earth objects. NASA/JPL-Caltech
Detecting near-Earth objects
NEOWISE was a game-changing mission, as it revolutionized how to survey near-Earth objects.
The spacecraft orbited Earth from north to south, passing over the poles, and it was in a Sun-synchronous orbit, where it could see the Sun in the same direction over time. This position allowed it to scan all of the sky efficiently.
The spacecraft could survey astronomical and planetary objects by detecting the signatures they emitted in the mid-infrared range.
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Humans’ eyes can sense visible light, which is electromagnetic radiation between 400 and 700 nanometers. When we look at stars in the sky with the naked eye, we see their visible light components.
However, mid-infrared light contains waves between 3 and 30 micrometers and is invisible to human eyes.
When heated, an object stores that heat as thermal energy. Unless the object is thermally insulated, it releases that energy continuously as electromagnetic energy, in the mid-infrared range.
This process, known as thermal emission, happens to near-Earth objects after the Sun heats them up. The smaller an asteroid, the fainter its thermal emission. The NEOWISE spacecraft could sense thermal emissions from near-Earth objects at a high level of sensitivity – meaning it could detect small asteroids.
But asteroids aren’t the only objects that emit heat. The spacecraft’s sensors could pick up heat emissions from other sources too – including the spacecraft itself.
To make sure heat from the spacecraft wasn’t hindering the search, the WISE/NEOWISE spacecraft was designed so that it could actively cool itself using then-state-of-the-art solid hydrogen cryogenic cooling systems.
Operation phases
Since the spacecraft’s equipment needed to be very sensitive to detect faraway objects for WISE, it used solid hydrogen, which is extremely cold, to cool itself down and avoid any noise that could mess with the instruments’ sensitivity. Eventually the coolant ran out, but not until WISE had successfully completed its science goals.
During the cryogenic phase when it was actively cooling itself, the spacecraft operated at a temperature of about -447 degrees Fahrenheit (-266 degrees Celsius), slightly higher than the universe’s temperature, which is about -454 degrees Fahrenheit (-270 degrees Celsius).
The cryogenic phase lasted from 2009 to 2011, until the spacecraft went into hibernation in 2011.
Following the hibernation period, NASA decided to reactivate the WISE spacecraft under the NEOWISE mission, with a more specialized focus on detecting near-Earth objects, which was still feasible even without the cryogenic cooling.
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During this reactivation phase, the detectors didn’t need to be quite as sensitive, nor the spacecraft kept as cold as it was during the cryogenic cooling phase, since near-Earth objects are closer than WISE’s faraway targets.
The consequence of losing the active cooling was that two long-wave detectors out of the four on board became so hot that they could no longer function, limiting the craft’s capability.
Nevertheless, NEOWISE used its two operational detectors to continuously monitor both previously and newly detected near-Earth objects in detail.
NEOWISE’s legacy
As of February 2024, NEOWISE had taken more than 1.5 million infrared measurements of about 44,000 different objects in the solar system. These included about 1,600 discoveries of near-Earth objects. NEOWISE also provided detailed size estimates for more than 1,800 near-Earth objects.
Despite the mission’s contributions to science and planetary defense, it was decommissioned in August 2024. The spacecraft eventually started to fall toward Earth’s surface, until it reentered Earth’s atmosphere and burned up on Nov. 1, 2024.
NEOWISE’s contributions to hunting near-Earth objects gave scientists much deeper insights into the asteroids around Earth. It also gave scientists a better idea of what challenges they’ll need to overcome to detect faint objects.
So, did NEOWISE find all the near-Earth objects? The answer is no. Most scientists still believe that there are far more near-Earth objects out there that still need to be identified, particularly smaller ones.An illustration of NEO Surveyor, which will continue to detect and catalog near-Earth objects once it is launched into space. NASA/JPL-Caltech/University of Arizona
To carry on NEOWISE’s legacy, NASA is planning a mission called NEO Surveyor. NEO Surveyor will be a next-generation space telescope that can study small near-Earth asteroids in more detail, mainly to contribute to NASA’s planetary defense efforts. It will identify hundreds of thousands of near-Earth objects that are as small as about 33 feet (10 meters) across. The spacecraft’s launch is scheduled for 2027.
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NASA goes on an ESCAPADE – twin small, low-cost orbiters will examine Mars’ atmosphere
NASA’s ESCAPADE mission launched two small, affordable orbiters to Mars on Blue Origin’s New Glenn rocket. Discover how these twin spacecraft will study Mars’ atmosphere, test new trajectories, and usher in a new era of rapid, low-cost space exploration.
NASA goes on an ESCAPADE – twin small, low-cost orbiters will examine Mars’ atmosphere
Christopher Carr, Georgia Institute of Technology and Glenn Lightsey, Georgia Institute of Technology Envision a time when hundreds of spacecraft are exploring the solar system and beyond. That’s the future that NASA’s ESCAPADE, or Escape and Plasma Acceleration and Dynamics Explorers, mission will help unleash: one where small, low-cost spacecraft enable researchers to learn rapidly, iterate, and advance technology and science. The ESCAPADE mission launched on Nov. 13, 2025 on a Blue Origin New Glenn rocket, sending two small orbiters to Mars to study its atmosphere. As aerospace engineers, we’re excited about this mission because not only will it do great science while advancing the deep space capabilities of small spacecraft, but it also will travel to the red planet on an innovative new trajectory. The ESCAPADE mission is actually two spacecraft instead of one. Two identical spacecraft will take simultaneous measurements, resulting in better science. These spacecraft are smaller than those used in the past, each about the size of a copy machine, partly enabled by an ongoing miniaturization trend in the space industry. Doing more with less is very important for space exploration, because it typically takes most of the mass of a spacecraft simply to transport it where you want it to go.The ESCAPADE mission logo shows the twin orbiters.TRAX International/Kristen Perrin Having two spacecraft also acts as an insurance policy in case one of them doesn’t work as planned. Even if one completely fails, researchers can still do science with a single working spacecraft. This redundancy enables each spacecraft to be built more affordably than in the past, because the copies allow for more acceptance of risk.
Space is not a friendly place. Most of it is a vacuum – that is, mostly empty, without the gas molecules that create pressure and allow you to breathe or transfer heat. These molecules keep things from getting too hot or too cold. In space, with no pressure, a spacecraft can easily get too hot or too cold, depending on whether it is in sunlight or in shadow. In addition, the Sun and other, farther astronomical objects emit radiation that living things do not experience on Earth. Earth’s magnetic field protects you from the worst of this radiation. So when humans or our robotic representatives leave the Earth, our spacecraft must survive in this extreme environment not present on Earth. ESCAPADE will overcome these challenges with a shoestring budget totaling US$80 million. That is a lot of money, but for a mission to another planet it is inexpensive. It has kept costs low by leveraging commercial technologies for deep space exploration, which is now possible because of prior investments in fundamental research. For example, the GRAIL mission, launched in 2011, previously used two spacecraft, Ebb and Flow, to map the Moon’s gravity fields. ESCAPADE takes this concept to another world, Mars, and costs a fraction as much as GRAIL. Led by Rob Lillis of UC Berkeley’s Space Sciences Laboratory, this collaboration between spacecraft builders Rocket Lab, trajectory specialists Advanced Space LLC and launch provider Blue Origin – all commercial partners funded by NASA – aims to show that deep space exploration is now faster, more agile and more affordable than ever before.NASA’s ESCAPADE represents a partnership between a university, commercial companies and the government.
How will ESCAPADE get to Mars?
ESCAPADE will also use a new trajectory to get to Mars. Imagine being an archer in the Olympics. To hit a bull’s-eye, you have to shoot an arrow through a 15-inch – 40-centimeter – circle from a distance of 300 feet, or 90 meters. Now imagine the bull’s-eye represents Mars. To hit it from Earth, you would have to shoot an arrow through the same 15-inch bull’s-eye at a distance of over 13 miles, or 22 kilometers. You would also have to shoot the arrow in a curved path so that it goes around the Sun. Not only that, but Mars won’t be at the bull’s-eye at the time you shoot the arrow. You must shoot for the spot that Mars will be in 10 months from now. This is the problem that the ESCAPADE mission designers faced. What is amazing is that the physical laws and forces of nature are so predictable that this was not even the hardest problem to solve for the ESCAPADE mission. It takes energy to get from one place to another. To go from Earth to Mars, a spacecraft has to carry the energy it needs, in the form of rocket fuel, much like gasoline in a car. As a result, a high percentage of the total launch mass has to be fuel for the trip. When going to Mars orbit from Earth orbit, as much as 80% to 85% of the spacecraft mass has to be propellant, which means not much mass is dedicated to the part of the spacecraft that does all the experiments. This issue makes it important to pack as much capability into the rest of the spacecraft as possible. For ESCAPADE, the propellant is only about 65% of the spacecraft’s mass. ESCAPADE’s route is particularly fuel-efficient. First, Blue and Gold will go to the L2 Lagrange point, one of five places where gravitational forces of the Sun and Earth cancel out. Then, after about a year, during which they will collect data monitoring the Sun, they will fly by the Earth, using its gravitational field to get a boost. This way, they will arrive at Mars in about 10 more months. This new approach has another advantage beyond needing to carry less fuel: Trips from Earth to Mars are typically favorable to save fuel about every 26 months due to the two planets’ relative positions. However, this new trajectory makes the departure time more flexible. Future cargo and human missions could use a similar trajectory to have more frequent and less time-constrained trips to Mars. ESCAPADE is a testament to a new era in spaceflight. For a new generation of scientists and engineers, ESCAPADE is not just a mission – it is a blueprint for a new collaborative era of exploration and discovery. This article was updated on Nov. 13, 2025 to reflect the ESCAPADE launch’s date and success.Christopher Carr, Assistant Professor of Aerospace Engineering, Georgia Institute of Technology and Glenn Lightsey, Professor of Space Systems Technology, Georgia Institute of Technology This article is republished from The Conversation under a Creative Commons license. Read the original article.
NASA Astronaut Jonny Kim to Share Insights from Eight-Month Space Station Mission
NASA astronaut Jonny Kim will discuss his eight-month International Space Station mission during a live news conference on Dec. 19. Discover the science, technology, and teamwork behind his groundbreaking journey, streaming live via NASA and covered by STM Daily News.
NASA astronaut Jonny Kim poses inside the International Space Station’s cupola as it orbits 265 miles above the Indian Ocean near Madagascar. Credit: NASA
NASA Astronaut Jonny Kim Recaps Eight-Month International Space Station Mission in Live News Conference
Space exploration continues to push the boundaries of science and human achievement. This month, NASA astronaut Jonny Kim returns from an extraordinary eight-month mission aboard the International Space Station (ISS)—and he’s ready to share his story.
Event Details:
What: Jonny Kim’s ISS Mission Recap News Conference
Returning to Earth on Dec. 9 with Roscosmos cosmonauts Sergey Ryzhikov and Alexey Zubritsky, Kim logged an impressive 245 days in space as a flight engineer for Expeditions 72/73. The crew completed a staggering 3,920 orbits—covering nearly 104 million miles—and managed the arrival and departure of multiple spacecraft.
But it’s the science behind the mission that stands out:
Advancing Medicine and Technology
Bioprinted Tissues in Microgravity: Kim helped study the behavior of bioprinted tissues containing blood vessels, a step forward in space-based tissue production that could one day revolutionize patient care on Earth.
Remote Robotics Operations: Through the Surface Avatar study, Kim tested the remote command of multiple robots in space—work that could lead to more advanced robotic assistants for future missions to the Moon, Mars, and beyond.
Nanomaterials for Medicine: Kim contributed to the development of DNA-mimicking nanomaterials, opening doors for improved drug delivery and regenerative medicine both in space and at home.
How to Watch and Participate
NASA invites the public and media to join the news conference. For those interested in direct participation, media accreditation is required (details available via NASA’s newsroom). For everyone else, the event will be streamed live—no registration needed.
Learn more about International Space Station research and ongoing missions:NASA’s ISS Page
Why This Matters
Jonny Kim’s journey is a testament to the power of international collaboration and the relentless pursuit of knowledge. His work aboard the ISS is already shaping the future of medicine, robotics, and exploration—impacting lives both in space and right here on Earth.
Stay tuned to STM Daily News for more updates on science, innovation, and the stories that connect our community to the world beyond.
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Blue Origin’s New Glenn rocket landed its booster on a barge at sea – an achievement that will broaden the commercial spaceflight market
Blue Origin’s New Glenn rocket successfully landed its booster at sea on only its second launch, marking a major milestone for commercial spaceflight. Learn how this achievement reduces launch costs and creates real competition for SpaceX.
Blue Origin’s New Glenn rocket lifted off for its second orbital flight on Nov. 13, 2025. AP Photo/John Raoux
Blue Origin’s New Glenn rocket landed its booster on a barge at sea – an achievement that will broaden the commercial spaceflight market
Wendy Whitman Cobb, Air University Blue Origin’s New Glenn rocket successfully made its way to orbit for the second time on Nov. 13, 2025. Although the second launch is never as flashy as the first, this mission is still significant in several ways. For one, it launched a pair of NASA spacecraft named ESCAPADE, which are headed to Mars orbit to study that planet’s magnetic environment and atmosphere. The twin spacecraft will first travel to a Lagrange point, a place where the gravity between Earth, the Moon and the Sun balances. The ESCAPADE spacecraft will remain there until Mars is in better alignment to travel to. And two, importantly for Blue Origin, New Glenn’s first stage booster successfully returned to Earth and landed on a barge at sea. This landing allows the booster to be reused, substantially reducing the cost to get to space.Blue Origin launched its New Glenn rocket and landed the booster on a barge at sea on Nov. 13, 2025. As a space policy expert, I see this launch as a positive development for the commercial space industry. Even though SpaceX has pioneered this form of launch and reuse, New Glenn’s capabilities are just as important.
New Glenn in context
Although Blue Origin would seem to be following in SpaceX’s footsteps with New Glenn, there are significant differences between the two companies and their rockets. For most launches today, the rocket consists of several parts. The first stage helps propel the rocket and its spacecraft toward space and then drops away when its fuel is used up. A second stage then takes over, propelling the payload all the way to orbit. While both New Glenn and Falcon Heavy, SpaceX’s most powerful rocket currently available, are partially reusable, New Glenn is taller, more powerful and can carry a greater amount of payload to orbit. Blue Origin plans to use New Glenn for a variety of missions for customers such as NASA, Amazon and others. These will include missions to Earth’s orbit and eventually to the Moon to support Blue Origin’s own lunar and space exploration goals, as well as NASA’s. NASA’s Artemis program, which endeavors to return humans to the Moon, is where New Glenn may become important. In the past several months, several space policy leaders, as well as NASA officials, have expressed concern that Artemis is progressing too slowly. If Artemis stagnates, China may have the opportunity to leap ahead and beat NASA and its partners to the lunar south pole. These concerns stem from problems with two rockets that could potentially bring Americans back to the Moon: the space launch system and SpaceX’s Starship. NASA’s space launch system, which will launch astronauts on its Orion crew vehicle, has been criticized as too complex and costly. SpaceX’s Starship is important because NASA plans to use it to land humans on the Moon during the Artemis III mission. But its development has been much slower than anticipated. In response, Blue Origin has detailed some of its lunar exploration plans. They will begin with the launch of its uncrewed lunar lander, Blue Moon, early next year. The company is also developing a crewed version of Blue Moon that it will use on the Artemis V mission, the planned third lunar landing of humans. Blue Origin officials have said they are in discussions with NASA over how they might help accelerate the Artemis program.
New Glenn’s significance
New Glenn’s booster landing makes this most recent launch quite significant for the company. While it took SpaceX several tries to land its first booster, Blue Origin has achieved this feat on only the second try. Landing the boosters – and, more importantly, reusing them – has been key to reducing the cost to get to space for SpaceX, as well as others such as Rocket Lab. That two commercial space companies now have orbital rockets that can be partially reused shows that SpaceX’s success was no fluke. With this accomplishment, Blue Origin has been able to build on its previous experience and success with its suborbital rocket, New Shepard. Launching from Blue Origin facilities in Texas since 2015, New Shepard has taken people and cargo to the edge of space, before returning to its launch site under its own power.Blue Origin’s suborbital rocket, New Shepard.Joe Raedle/Getty Images New Glenn is also significant for the larger commercial space industry and U.S. space capabilities. It represents real competition for SpaceX, especially its Starship rocket. It also provides more launch options for NASA, the U.S. government and other commercial customers, reducing reliance on SpaceX or any other launch company. In the meantime, Blue Origin is looking to build on the success of New Glenn’s launch and its booster landing. New Glenn will next launch Blue Origin’s Blue Moon uncrewed lander in early 2026. This second successful New Glenn launch will also contribute to the rocket’s certification for national security space launches. This accomplishment will allow the company to compete for contracts to launch sensitive reconnaissance and defense satellites for the U.S. government. Blue Origin will also need to increase its number of launches and reduce the time between them to compete with SpaceX. SpaceX is on pace for between 165 and 170 launches in 2025 alone. While Blue Origin may not be able to achieve that remarkable cadence, to truly build on New Glenn’s success it will need to show it can scale up its launch operations. Wendy Whitman Cobb, Professor of Strategy and Security Studies, Air University This article is republished from The Conversation under a Creative Commons license. Read the original article.
