NASA will provide live coverage of prelaunch and launch activities for Sentinel-6B, an international mission delivering critical sea level and ocean data to protect coastal infrastructure, improve weather forecasting, and support commercial activities at sea.

Launch is targeted at 12:21 a.m. EST, Monday, Nov. 17 (9:21 p.m. PST, Sunday, Nov. 16) aboard a SpaceX Falcon 9 rocket from Space Launch Complex 4 East at Vandenberg Space Force Base in California.

Watch coverage beginning at 11:30 p.m. EST (8:30 p.m. PST) on NASA+, Amazon Prime, and more. Learn how to watch NASA content through a variety of platforms, including social media.

The Sentinel-6B mission continues a decades-long effort to monitor global sea level and ocean conditions using precise radar measurements from space. Since the early 1990s, satellites launched by NASA and domestic and international partners have collected precise sea level data. The launch of Sentinel-6B will extend this dataset out to nearly four decades.

NASA’s mission coverage is as follows (all times Eastern and subject to change based on real-time operations):

Saturday, Nov. 15

4 p.m. – NASA Prelaunch Teleconference on International Ocean Tracking Mission

• Karen St. Germain, director, Earth Science Division, NASA Headquarters in Washington
• Pierrik Veuilleumier, Sentinel-6B project manager, ESA (European Space Agency)
• Parag Vaze, Sentinel-6B project manager, NASA’s Jet Propulsion Laboratory in Pasadena, California
• Tim Dunn, senior launch director, Launch Services Program, NASA’s Kennedy Space Center in Florida
• Julianna Scheiman, director, NASA Science Missions, SpaceX
• 1st Lt. William Harbin, launch weather officer, U.S. Air Force

Audio of the teleconference will stream on the NASA Video YouTube channel.  

Media interested in participating by phone must RSVP no later than two hours prior to the start of the call at: ksc-newsroom@mail.nasa.gov. A copy of NASA’s media accreditation policy is online.

Sunday Nov. 16

11:30 p.m. – Launch coverage begins on NASA+, Amazon Prime, and more.

Audio-only coverage

Audio-only of the launch coverage will be carried on the NASA “V” circuits, which may be accessed by dialing 321-867-1220 or -1240. On launch day, “mission audio” countdown activities without NASA+ launch commentary will be carried at 321-867-7135.

NASA website launch coverage

Launch day coverage of the mission will be available on the agency’s website. Coverage will include links to live streaming and blog updates beginning no earlier than 11 p.m. EST, Nov. 16, as the countdown milestones occur. Streaming video and photos of the launch will be accessible on demand shortly after liftoff. Follow countdown coverage on NASA’s Sentinel-6/Jason-CS blog.

For questions about countdown coverage, contact the NASA Kennedy newsroom at: 321-867-2468.

Attend launch virtually

Members of the public can register to attend this launch virtually. NASA’s virtual guest program for this mission includes curated launch resources, notifications about related opportunities or changes, and a stamp for the NASA virtual guest passport following launch.

Watch, engage on social media

Let people know you’re watching the mission on X, Facebook, and Instagram by following and tagging these accounts:

X: @NASA, @NASAKennedy, @NASAJPL, @NASAEarth

Facebook: NASA, NASA Kennedy, NASA JPL, NASA Earth

Instagram: @NASA, @NASAKennedy, @NASAJPL, @NASAEarth

Sentinel-6B is the second of twin satellites in the Copernicus Sentinel-6/Jason-CS (Continuity of Service) mission, a collaboration among NASA, ESA, EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites), and the National Oceanic and Atmospheric Administration (NOAA). The first satellite in the mission, Sentinel-6 Michael Freilich, launched in November 2020. The European Commission contributed funding support, while France’s space agency CNES (Centre National d’Études Spatiales) provided technical expertise. The mission also marks the first international involvement in Copernicus, the European Union’s Earth Observation Programme.

For more information about these missions, visit:

https://science.nasa.gov/mission/sentinel-6b/

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Elizabeth Vlock
NASA Headquarters, Washington
202-358-1600
elizabeth.a.vlock@nasa.gov

Leejay Lockhart
Kennedy Space Center, Fla.
321-747-8310
leejay.lockhart@nasa.gov

Andrew Wang / Andrew Good
Jet Propulsion Laboratory, Pasadena, Calif.
626-379-6874 / 818-393-2433
andrew.wang@jpl.nasa.gov / andrew.c.good@jpl.nasa.gov

This image released on June 30, 2025, combines data from NASA’s James Webb Space Telescope and NASA’s Chandra X-ray Observatory to visualize dark matter. Researchers used Webb’s observations to carefully measure the mass of the galaxy clusters shown here as well as the collective light emitted by stars that are no longer bound to individual galaxies.

Learn more.

Image credit: NASA, ESA, CSA, STScI, CXC

NASA’s Glenn Research Center in Cleveland has earned 2025 R&D 100 Awards for developing a system that delivers high-speed internet for space and co-inventing technology for a new class of soft magnetic nanocrystalline materials designed to operate at extreme temperatures. This brings NASA Glenn’s total to 130 R&D 100 Awards. 

High-Rate Delay Tolerant Networking  

NASA Glenn’s Daniel Raible and Rachel Dudukovich led their team of engineers to create High-Rate Delay Tolerant Networking  (HDTN), a cutting-edge software solution designed to revolutionize data streaming and communication in space. HDTN enables reliable, high-speed transmission of data between space and Earth — even under the extreme conditions of space — minimizing loss and system delay. 

“The HDTN software protocol allows faster, automated, and seamless data transfer between spacecraft, even across communication systems operating on different link speeds,” Raible said. “It’s up to 10 times faster than current delay-tolerant networking (DTN).” 

This advanced technology has far-reaching implications beyond NASA. With its open-source code, HDTN paves the way for collaboration, innovation, and adoption across the rapidly expanding commercial space industry, offering near real-time communication capabilities. 

Looking ahead, HDTN could form the foundation of a solar system-wide internet, supporting data exchange between Earth, spacecraft, and even future missions involving human travel to the Moon and Mars. 

VulcanAlloy 

In a project led by the University of Pittsburgh, researchers at NASA Glenn, including Nick Bruno, Grant Feichter, Vladimir Keylin, Alex Leary, and Ron Noebe, partnered with CorePower Magnetics to develop VulcanAlloy — a breakthrough soft magnetic nanocrystalline material. 

VulcanAlloy, developed under NASA’s High Operating Temperature Technology Program using processing capability established by the Advanced Air Transport Technology project, operates above 500°C, far beyond the limits of conventional soft magnetic materials. Its nano-engineered structure maintains efficiency at high temperatures and frequencies. 

With adjustable magnetic properties, it can replace multiple materials in components like inductors, transformers, motors, and sensors while reducing the need for bulky cooling systems — ideal for extreme environments. 

Raytheon has tested VulcanAlloy cores, highlighting their potential in electrified aircraft, defense, and aerospace systems. 

This innovation also promises major impact in electric vehicles, data centers, microgrids, and energy systems, where smaller, lighter, and more efficient components are key to advancing next-generation power electronics. 

The R&D 100 Awards, a worldwide science and innovation competition, received entries from organizations around the world. Now in its 63rd year, this year’s judging panel included industry professionals from across the globe who evaluated breakthrough innovations in technology and science. 

Stars of all ages are on display in this NASA/ESA Hubble Space Telescope image of the sparkling spiral galaxy called NGC 6000, located 102 million light-years away in the constellation Scorpius.

NGC 6000 has a glowing yellow center and glittering blue outskirts. These colors reflect differences in the average ages, masses, and temperatures of the galaxy’s stars. At the heart of the galaxy, the stars tend to be older and smaller. Less massive stars are cooler than more massive stars, and somewhat counterintuitively, cooler stars are redder, while hotter stars are bluer. Farther out along NGC 6000’s spiral arms, brilliant star clusters host young, massive stars that appear distinctly blue.

Hubble collected the data for this image while surveying the sites of recent supernova explosions in nearby galaxies. NGC 6000 hosted two recent supernovae: SN 2007ch in 2007 and SN 2010as in 2010. Using Hubble’s sensitive detectors, researchers can discern the faint glow of supernovae years after the initial explosion. These observations help constrain the masses of supernovae progenitor stars and can indicate if they had any stellar companions.

By zooming in to the right side of the galaxy’s disk in this image, you can see a set of four thin yellow and blue lines. These lines are an asteroid in our solar system that was drifting across Hubble’s field of view as it gazed at NGC 6000. The four lines are due to four different exposures recorded one after another with slight pauses in between. Image processors combined these four exposures to create the final image. The lines appear dashed with alternating colors because each exposure used a filter to collect very specific wavelengths of light, in this case around red and blue. Having these separate exposures of particular wavelengths is important to study and compare stars by their colors — but it also makes asteroid interlopers very obvious!

Media Contact:

Claire Andreoli (claire.andreoli@nasa.gov)
NASA’s Goddard Space Flight Center, Greenbelt, MD

A pair of NASA spacecraft ultimately destined for Mars will study how its magnetic environment is impacted by the Sun. The mission also will help the agency prepare for future human exploration of Mars.

NASA’s ESCAPADE (Escape and Plasma Acceleration and Dynamics Explorers) spacecraft launched at 3:55 p.m. EST, Thursday, aboard a Blue Origin New Glenn rocket from Launch Complex 36 at Cape Canaveral Space Force Station in Florida.

“Congratulations to Blue Origin, Rocket Lab, UC Berkeley, and all our partners on the successful launch of ESCAPADE. This heliophysics mission will help reveal how Mars became a desert planet, and how solar eruptions affect the Martian surface,” said acting NASA Administrator Sean Duffy. “Every launch of New Glenn provides data that will be essential when we launch MK-1 through Artemis. All this information will be critical to protect future NASA explorers and invaluable as we evaluate how to deliver on President Trump’s vision of planting the Stars and Stripes on Mars.”

The twin spacecraft, built by Rocket Lab, will investigate how a never-ending, million-mile-per-hour stream of particles from the Sun, known as the solar wind, has gradually stripped away much of the Martian atmosphere, causing the planet to cool and its surface water to evaporate. The mission is led by the University of California, Berkeley.

Ground controllers for the ESCAPADE mission established communications with both spacecraft by 10:35 p.m. EST.

“The ESCAPADE mission is part of our strategy to understand Mars’ past and present so we can send the first astronauts there safely,” said Nicky Fox, associate administrator, Science Mission Directorate at NASA Headquarters in Washington. “Understanding Martian space weather is a top priority for future missions because it helps us protect systems, robots, and most importantly, humans, in extreme environments.”

New Glenn also carried a space communications technology demonstration from Viasat Inc., supporting NASA’s efforts to commercialize next-generation satellite relay services for science missions. Funded by the agency’s Communications Services Project, the demonstration transmitted launch telemetry data from the rocket’s second stage to an operations center on Earth through Viasat’s geostationary satellite network.

Blazing new trails

Recent solar activity, which triggered widespread auroras on Earth, caused a slight delay in launch to prevent solar storms from negatively impacting post-launch spacecraft commissioning. When ESCAPADE arrives at Mars, it will study present-day effects of the solar wind and solar storms on the Red Planet in real time. This will provide insights about Martian space weather and help NASA better understand the conditions astronauts will face when they reach Mars.

“The ESCAPADE spacecraft are now about to embark on a unique journey to Mars never traversed by any other mission,” said Alan Zide, ESCAPADE program executive at NASA Headquarters.

Rather than heading directly to Mars, the twin spacecraft will first head to a location in space a million miles from Earth called Lagrange point 2. Right now, Earth and Mars are on opposite sides of the Sun, which makes it harder to travel from one planet to the other. In November 2026, when Earth and Mars are closely aligned in their orbits, the ESCAPADE spacecraft will loop back to Earth and use Earth’s gravity to slingshot themselves toward Mars.

In the past, Mars missions have waited to launch during a brief window of time when Earth and Mars are aligned, which happens roughly every two years. However, with the type of trajectory ESCAPADE is using, future missions could launch nearly anytime and wait in space, queueing up for their interplanetary departure, until the two planets are in position.

This original “Earth-proximity” or “loiter” orbit also will make ESCAPADE the first mission to ever pass through a distant region of Earth’s magnetotail, part of our planet’s magnetic field that gets stretched out away from the Sun by the solar wind.

Studying Mars in stereo

After a 10-month cruise, ESCAPADE is expected to arrive at Mars in September 2027, becoming the first coordinated dual-spacecraft mission to enter orbit around another planet.

Over several months, the two spacecraft will arrange themselves in their initial science formation, in which the twin spacecraft will follow each other in the same “string-of-pearls” orbit, passing through the same areas in quick succession to investigate for the first time how space weather conditions vary on short timescales. This science campaign will begin in June 2028.

Six months later, both spacecraft will shift into different orbits, with one traveling farther from Mars and the other staying closer to it. Planned to last for five months, this second formation aims to study the solar wind and Mars’ upper atmosphere simultaneously, allowing scientists to investigate how the planet responds to the solar wind in real time.

In addition, ESCAPADE will provide more information about Mars’ ionosphere — a part of the upper atmosphere that future astronauts will rely on to send radio and navigation signals around the planet.

The ESCAPADE mission is funded by NASA’s Heliophysics Division and is part of NASA’s Small Innovative Missions for Planetary Exploration program. NASA’s Goddard Space Flight Center in Greenbelt, Maryland, Embry-Riddle Aeronautical University, and Advanced Space support the mission. NASA’s Launch Services Program, based at Kennedy Space Center in Florida, secured the launch service with Blue Origin under the Venture-class Acquisition of Dedicated and Rideshare contract.

To learn more about the ESCAPADE mission, visit:

https://science.nasa.gov/mission/escapade/

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Abbey Interrante
Headquarters, Washington
301-201-0124
abbey.a.interrante@nasa.gov

Leejay Lockhart
Kennedy Space Center, Fla.
321-747-8310
leejay.lockhart@nasa.gov

By Susanne P. Schwenzer, Professor of Planetary Mineralogy at The Open University, U.K.

Earth planning date: Friday, Oct. 31, 2025

I am writing this blog and it’s still daytime — and I am looking forward to accompanying one of my favorite kids to trick-and-treating afterwards. That’s a new feeling for me because I am usually in the U.K., which means my Curiosity shifts start in the late afternoon when everyone else finishes working. But for now, I am in the U.S. (Houston, Texas), and it’s daytime, which is a lovely change, especially today as I don’t have to hide from trick-and-treaters’ interruptions but instead can give out all the candy they can possibly eat! Looking forward to that… but before, let’s see what Curiosity was up to this week!

You’ll have seen the blog by my colleague Bill, “Searching for Answers at Monte Grande,” about our analysis of the “Valle de la Luna” sample with CheMin and SAM EGA. This week we were continuing the SAM analysis of the 44th drilled sample, which always takes a lot of power, so that leaves less room for other investigations. Hence, you might notice that there were fewer ChemCam and Mastcam activities. The rover also did not drive while sample is still in the turret ready for delivery of the next SAM activities. Curiosity has now completed the deliveries to CheMin and SAM, though, and the last action in Friday’s plan was to clean out the remaining sample from the drill in preparation for driving away here in Monday’s plan. 

In Monday’s plan we’ll reposition the rover to get a very good look at the potential next drill targets on the ridge. We’ve been able to scout them already in previous images and have a few candidates, but decision-making will require images from Monday’s parking position, since we are currently parked in a hollow and cannot really see what’s up on the ridge.

That said, being stationary has always been a golden opportunity for looking at wind action, and this week was no difference as Mastcam looked at the drill fines several times over the time we were stationary, to ascertain the safety for MAHLI to approach — and of course to use those images for atmospheric science, too. In addition, Mastcam took the opportunity to get comprehensive imaging of the entire area. There are several mosaics that document the near-field, for example at target “Nazareth.” In the mid- and far-field distances, Mastcam assembled a large mosaic on “Monte Grande” and “Ticaco” to document the different rocks in the surrounding ridge walls and wider afield. There are so many interesting textures and alteration features, alongside troughs and fractures, that the team will have a fun time analyzing them all in great detail individually, as well as their relationships to each other.  

ChemCam has investigated the Valle de la Luna drill hole and tailings as per the usual cadence of post-drilling activities, and in addition investigated target Nazareth to understand how the block that Curiosity drilled might vary chemically. Another ChemCam target was “Pachica,” as the team observed many nodules in this target and we are interested in their chemical variability and “Palpana,” a more smooth block. Further investigations of the Valle de la Luna drill hole with ChemCam are targets “Anapia” and “Bandara” to further investigate the chemical diversity of the drill target block.

ChemCam Remote Micro Imager (RMI) observations were also taken in the near-field and farther away. In the near-field, RMI images are documenting further details on the Valle de la Luna drill hole and its tailings, while further afield the Monte Grande Wall is one of the RMI targets alongside with other details in the boxwork ridges around us. On Friday, the RMI was pointed far uphill to continue imaging the yardang unit, which is one of our next goals in the longer term future.

In addition to all the drill activities and rock investigations, the atmosphere received attention too. We have the usual cadence of environmental investigations, building our long-term pressure, temperature, and humidity record of Mars; and we observe the atmospheric opacity, dust-devil activities, and clouds. Of course, we are all looking forward to next week, when we will decide on the second drill target in this area, this time on the ridge. Let’s see what block will be looking best, both from a science and an engineering point of view – we’ve got a short list of candidates; the detailed images are for Monday’s plan. Meanwhile, we’ll enjoy trick-and-treating here on Earth and our weekends while Curiosity finishes the drill activities at Valle de la Luna.