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NASA Astronaut Chris Williams to Discuss Space Station Mission

2026-07-27 18:49

NASA astronaut Chris Williams shows off the Destiny laboratory module’s Microgravity Science Glovebox aboard the International Space Station. WIlliams was supporting semiconductor crystal research to help advance the commercial space economy and promoting Earth-based industries. He is wearing a dark green t-shirt and khaki pants with a brown belt. He is shown smiling with a headset around his neck.
NASA astronaut and Expedition 74 flight engineer Chris Williams shows off the Destiny laboratory module’s Microgravity Science Glovebox aboard the International Space Station. Williams was supporting semiconductor crystal research to help advance the commercial space economy and promote Earth-based industries.
NASA/Chris Williams

NASA astronaut Chris Williams will recap his recent eight-month mission aboard the International Space Station during a news conference at 2:45 p.m. EDT Tuesday, Aug. 4, from the agency’s Johnson Space Center in Houston.

NASA will stream this event live through a variety of platforms. Learn where to watch online:

https://www.nasa.gov/live

United States-based media interested in attending in person must contact the NASA Johnson newsroom no later than 5 p.m., Friday, July 31, at jsccommu@mail.nasa.gov.

Media wishing to participate by phone must contact the Johnson newsroom no later than two hours before the start of the event. To ask a question by phone, media must dial into the news conference no later than 15 minutes prior to the start of the call. NASA’s media accreditation policy is available online.

Williams returned to Earth on July 26, after logging 241 days as an Expedition 73/74 flight engineer during his first spaceflight. He returned along with Roscosmos cosmonauts Sergey Kud-Sverchkov and Sergei Mikaev, completing 3,856 orbits of the Earth over the course of their more than 102-million-mile journey. They also saw the arrival of six visiting spacecraft and the departure of eight.

During his mission, Williams supported a wide range of scientific investigations and technology demonstrations. He helped advance research for new cancer treatments and improved in-space manufacturing of materials used in high-performance computers and electronics. Williams also completed two spacewalks to prep for space station power system upgrades and to replace a faulty joint on the Canadarm2 robotic arm. The crew’s work aboard the space station helps improve life on Earth and prepare for future human missions to the Moon and Mars.

To learn more about International Space Station research, operations, and its crews, visit:

http://www.nasa.gov/station

-end-

Joshua Finch
Headquarters, Washington
202-358-1100
joshua.a.finch@nasa.gov

Anna Schneider
Johnson Space Center, Houston
281-483-5111
anna.c.schneider@nasa.gov

NASA Science Soars During August Total Solar Eclipse

2026-07-27 18:01

6 min read

NASA Science Soars During August Total Solar Eclipse

Each time the Moon covers the Sun during a total solar eclipse — darkening daytime skies and briefly revealing the Sun’s ethereal outer atmosphere, the corona — it presents new opportunities to better understand our star and its influence on Earth.

On Wednesday, Aug. 12, as the next total solar eclipse sweeps over Greenland, Iceland, and Spain, NASA-funded science teams will be chasing the Moon’s shadow with a high-altitude jet and scientific balloons to investigate the Sun’s dynamics and how the temporary darkening of our skies affects our atmosphere.

“From our unique perspective on Earth during a total solar eclipse, scientists can study the Sun’s corona in a way we can’t from anywhere else in the solar system,” said Kelly Korreck, eclipse program manager at NASA Headquarters in Washington. “The Sun impacts our daily life, satellites, and astronauts in space, and we can take advantage of this moment to advance our understanding of that influence.”

High-flying jet to record solar dynamics

Soaring in the nose cone of NASA’s WB-57 high-altitude research aircraft is a suite of four cameras to take high-resolution images of the corona in several different wavelengths of visible and infrared light. Part of an instrument developed by the NASA Scientifically Calibrated In-Flight Imagery (SCIFLI) team at NASA’s Langley Research Center in Hampton, Virginia, the cameras will capture at least 20 images per second, recording structures, outflows, and rapid changes in the corona during the total solar eclipse.

With these images, scientists hope to learn more about the formation of prominences (solar material that gets suspended above the Sun’s surface), better understand the corona and how it gets heated to nearly a million degrees, and investigate how material in the corona and the solar wind are related, which flows out from the Sun across the solar system.

These images of the corona and solar prominences were taken in different wavelengths of visible and infrared light by imagers aboard a NASA’s WB-57 jet during the April 8, 2024, total solar eclipse. The same cameras will fly on a NASA WB-57 jet again during the Aug. 12 eclipse.
NASA / SwRI / William Ashfield

By chasing the Moon’s shadow, the jet will extend how long the cameras can observe the corona. On the ground, the longest anyone will be able to see the corona is two minutes and 18 seconds. But flying along the eclipse path at 460 miles per hour, the jet’s view of the corona will last nearly three minutes.

NASA’s WB-57 will fly at 50,000 feet, above any clouds that might obscure the view of the corona from the ground. The altitude also allows the cameras to observe some infrared wavelengths that get absorbed by the lower atmosphere before reaching the ground, and the corona only has been observed in those wavelengths a few times before.

A small white airplane sis on a beige tarmac. It has a skinny nosecone and a fin that sticks straight up, with the NASA insignia.
One of NASA’s WB-57 high-altitude jets will carry a suite of cameras up to 50,000 feet to capture images of the solar corona during the Aug. 12 total solar eclipse.
NASA

The instrument, called SCIFLI Multispectral Airborne Imager, or SAMI, also flew on a WB-57 during the total solar eclipse on April 8, 2024, providing valuable imagery and information about the corona. However, the study’s principal investigator, Amir Caspi of the Southwest Research Institute in Boulder, Colorado, says each total solar eclipse provides new opportunities to learn more about the corona.

“The Sun is always changing,” Caspi said. “Every eclipse is different. So we could see things we didn’t see before. And we learn from each eclipse how to better observe the next one.”

Caspi’s team also is making some enhancements for the 2026 campaign based on lessons learned in 2024. For example, the team will adjust exposure times to better capture bright features that were overexposed in 2024 imagery. They will also leverage software developed since 2024 to process and analyze the data sooner than before.

The experiment is funded by NASA’s Heliophysics Low Cost Access to Space Program.

As a total solar eclipse crosses Russia, Greenland, Iceland, Spain, and Portugal on Aug. 12, 2026, some of the best views will come from 50,000 feet up, aboard NASA’s WB-57 jet. Credit: NASA’s Goddard Space Flight Center

Balloons to watch atmospheric changes

When a total solar eclipse suddenly turns daytime skies dark, our atmosphere changes in ways we don’t yet fully understand.

The NASA-supported Nationwide Eclipse Ballooning Project, led by Angela Des Jardins at Montana State University, is sending students from several U.S. universities to Iceland and Spain to launch scientific balloons before, during, and after the eclipse to better understand those changes.

A photograph shows several people in silhouette standing in a large field in front of the setting Sun, gathered around a large, round, white balloon floating just above their heads against a blue sky.
A student team from the University of Kentucky prepares to launch a ballon from Bloomington, Indiana, to take atmospheric measurements on April 8, 2024, during the 2024 Nationwide Eclipse Ballooning Project campaign.
Sean Bailey (University of Kentucky)

In Iceland, two teams will launch a total of 80 balloons starting 18 hours before the eclipse until eight hours afterward to study how the eclipse affects Earth’s “boundary layer,” the part of the atmosphere that touches the ground. The thickness of the boundary layer changes depending on factors such as surface temperature and moisture in the air.

Previous balloon flights during solar eclipses in October 2023 and April 2024 showed that the boundary layer collapsed, or decreased in thickness, in locations with clear skies but not where there were cloudy skies. Scientists wonder whether that will be different in Iceland in 2026. Changes in the boundary layer are driven by the day-night cycle. However, in Iceland in August, the days are long and nights are short, so the nighttime influences might not be as strong as in 2023 or 2024.

“Will this eclipse be able to collapse the boundary layer?” said Matthew Bernards, a chemical engineering professor at the University of Idaho, who leads one of the Iceland teams.

A small part of Earth appears in the lower portion of the view, with the blackness of space in the background at the top. The atmosphere appears as a thin, blue band separating Earth from space. Projected on to Earth is a dark, oval-shaped shadow cast by the Moon during a total solar eclipse.
This image shows the Moon’s shadow on Earth during the total solar eclipse on April 8, 2024, as seen from about 90,000 feet from a camera carried by a scientific balloon. Cameras carried by balloons launched from Spain will capture similar images during the Aug. 12 total solar eclipse.
Nationwide Eclipse Ballooning Project/Virginia Tech

In Spain, three balloon teams will launch a total of six balloons with 360-degree cameras to image the eclipse shadow from above. These balloons also will include instruments designed to measure levels of ozone in the atmosphere, which requires sunlight to form. Similar balloon experiments showed that ozone decreased during totality in April 2024. Scientists wonder whether there will be differences with this eclipse, particularly since it happens at a later time of day and during a different season.

The NASA-funded Nationwide Eclipse Ballooning Project will allow teams of students from across the U.S. to get a unique view of the August total solar eclipse with scientific balloons. Credit: NASA’s Goddard Space Flight Center

Follow along

While the total solar eclipse won’t be visible in the U.S., some parts of the country will be able to see a partial solar eclipse. Learn more about where to see the eclipse and how to view it safely.

by Vanessa Thomas
NASA’s Goddard Space Flight Center, Greenbelt, Md.

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Last Updated

Jul 27, 2026

NASA Astronaut Chris Williams Returns to Earth

2026-07-27 16:48

NASA astronaut Chris Williams grins at the camera while holding a walkie-talkie up to his ear. He's wearing a blue and white spacesuit that has various patches on the chest and left arm. His helmet is open. Someone in a blue jumpsuit stands behind him, and there are more people standing behind a red and white tape barrier.
NASA/Bill Ingalls

NASA astronaut Chris Williams is all smiles in this July 26, 2026, photo taken shortly after he landed with Expedition 74 Roscosmos cosmonauts Sergey Kud-Sverchkov, and Sergei Mikaev in Kazakhstan. This was Williams’ first mission.

Williams spent eight months aboard the International Space Station, where he supported a wide range of scientific investigations and technology demonstrations. He also completed two spacewalks to prep for space station power system upgrades and to replace a faulty joint on the Canadarm2 robotic arm.

Image credit: NASA/Bill Ingalls

NASA’s Swift Sees ‘Wandering’ Mega Black Hole Shredding Star

2026-07-27 16:06

An artist's concept of a tidal disruption event
This artist’s concept depicts a tidal disruption event, which occurs when a star passes fatally close to a supermassive black hole. Crumbs of the splintering star heat up as they swirl around the black hole, creating a glow astronomers can see from far across the cosmos, and the black hole launches a relativistic jet into space.
NRAO/AUI/NSF/NASA

NASA’s Neil Gehrels Swift Observatory captured an “orphan” black hole lighting up as it devoured a star on the outskirts of a faraway galaxy. These phenomena are rare to begin with, and none had ever before been seen so far outside of a galaxy’s core.

“We were looking for these star-shredding events as a way to find otherwise invisible supermassive black holes wandering away from the galactic cores where they usually reside,” said Robert Stein, a research fellow at The University of Maryland, College Park and NASA’s Goddard Space Flight Center in Greenbelt, Maryland. “With this discovery, which is one of just a couple that have been confirmed so far, we’ve validated a new technique and can use it to hunt for more.”

A paper describing the results, led by Stein, was published Monday in The Astrophysical Journal Letters.

Researchers saw an ultrabright flare unleashed by a star being torn apart by extreme gravitational forces after drifting too close to a monster black hole — a phenomenon called a tidal disruption event. The black hole behind the blast weighs in at about a million times the Sun’s mass. Its existence was first flagged in November 2025 as an unusual brightening in a galaxy about 750 million light-years away by ZTF (Zwicky Transient Facility), a survey conducted by the Palomar Observatory in Southern California.

“Out of the half million flashes ZTF detects each night, our new artificial intelligence algorithm automatically recognized a flare that looked a lot like a tidal disruption event, despite its unusual location in the outskirts of a galaxy,” Stein said. For a few months, the tidal disruption event outshone its entire host galaxy in ultraviolet wavelengths, temporarily radiating with the light of about 10 billion suns.

Animated observation showing the appearance of a blue orb
This gif shows the galaxy WISEA J014656.04-152214.7, located about 750 million light-years away in the constellation Cetus, before and after a tidal disruption event was spotted on its outer edge in November 2025. The image at left was taken by the DESI (Dark Energy Spectroscopic Instrument) Legacy Survey and the one at right is from the Lowell Discovery Telescope.
Lowell Discovery Telescope/Legacy Survey/Robert Stein

Other telescopes, including the SOAR (Southern Astrophysical Research) telescope in Chile, followed up on the ZTF source to look at the event’s spectrum, which revealed features supporting that it was likely a tidal disruption event. Astronomers then used NASA’s Swift to look at wavelengths they can’t detect with ground-based telescopes to uncover new information. For example, Swift’s UVOT (Ultraviolet/Optical Telescope) took the blip’s temperature and found that it had quite a fever at about 54,000 degrees Fahrenheit (30,000 degrees Celsius).

“The combination of all this data helped us rule out other explanations and confidently say it’s a tidal disruption event, despite its strange location,” said Jonathan Carney, a doctoral student at the University of North Carolina at Chapel Hill, who took the first spectra that supported the flare’s interpretation as a tidal disruption event.

Hidden heavyweights

Nearly every galaxy in the universe is anchored by a supermassive black hole sitting right in the center. About once every 100,000 years, a star will drift too close to this invisible heavyweight and trigger a tidal disruption event.

While they’re rather rare in any given galaxy, scientists scour millions of galaxies for them. Each year, astronomical surveys typically spot about 30 tidal disruption events occurring somewhere in the universe.

Prior to 2024, they’d only been seen in galaxy cores. That’s partly because astronomers mainly looked for them there; after all, it’s where all the known supermassive black holes were, and you can’t get a tidal disruption event without one (the gravitational pull of lighter black holes isn’t strong enough).

Then scientists saw the telltale signs of a star being shredded 2,600 light-years from the center of its host galaxy. That inspired more astronomers to look beyond galaxy cores for similar events, and now a team has identified one more than 30,000 light-years away from a galaxy’s center.

This video visualizes a star approaching a supermassive black hole so closely that it’s stretched to a breaking point by the black hole’s strong gravity. Intense tidal forces crack the star open and hurl its gaseous guts outward. Stellar debris forms a spinning accretion disk as it continues to spiral into the black hole.
NASA, ESA, STScI, Ralf Crawford (STScI)

Oddball origin story

So how did the newfound black hole become so off-kilter?

“It must have originated in a galaxy’s center, but not the one it’s in the outskirts of now,” Stein said. “We think the host galaxy’s supermassive black hole is still at its core, but the one eating the star could have started off in a small galaxy that merged with the big one we see today.”

The researchers have outlined two possibilities. Three or more galaxies may have merged together, and the gravitational tug-of-war between their central supermassive black holes may have flung the lightest black hole out to the galaxy’s edge.

Or a dwarf galaxy could be midway through a merger. As the dwarf’s stars fell into the larger galaxy, one may have passed too close to the dwarf’s supermassive black hole.

“Further discoveries could reveal the origin of this apparent ‘orphan’ black hole,” Stein said. “The key science question we want to answer is: How common are wandering black holes?”

The answer may soon be within reach. “Pointed science observations with Swift’s UVOT and XRT (X-Ray Telescope) instruments are temporarily suspended as the mission awaits an orbit boost, which is planned for this summer,” said co-author S. Bradley Cenko, Swift’s principal investigator at NASA Goddard. The spacecraft, whose primary mission ran from 2004 to 2006, is slowly sinking toward Earth due to atmospheric drag after more than 20 years of observations of the changing universe. Nudging it to a higher orbit could extend its lifetime even longer. “Once it resumes normal operations, Swift could continue searching for more examples of out-of-place black holes.”

In the coming years, scientists will use the new technique to search for disintegrating stars in observations from the newly operational Vera C. Rubin Observatory, jointly funded by the U.S. Department of Energy and National Science Foundation, in Chile and NASA’s upcoming Nancy Grace Roman Space Telescope.

“Rubin’s wide, deep surveys will reveal a much larger sample of tidal disruption events than current observatories are capable of collecting, including ones that are off-center,” Carney said. “And Roman’s space-based surveys will extend the current search zone by seeing ones that are farther away, looking back through 9 billion years of cosmic history.” Adding their observations to Swift’s and those from ground-based observatories will bring astronomers closer than ever before to completing a census of the universe’s behemoth black holes.

To learn more about the Swift mission, visit:

https://nasa.gov/swift

By Ashley Balzer
NASA’s Goddard Space Flight Center, Greenbelt, Md.

Media contact:

Claire Andreoli
NASA’s Goddard Space Flight Center, Greenbelt, Md.
301-286-1940

NASA to Cover Three US Spacewalks, Host Preview News Conference

2026-07-27 14:35

006B6348.NEF
NASA astronaut Jessica Meir works inside the International Space Station’s Quest airlock in March, her reflection visible in a spacesuit helmet visor as she installs leg and arm components and swaps parts between suits.
Credit: NASA/Jack Hathaway

NASA will provide coverage as astronauts venture outside the International Space Station during three spacewalks in August to continue upgrading solar arrays, replace a communications antenna, and connect power and data cables in support of space station operations.

Experts will preview the upcoming spacewalks during a news conference at 2 p.m. EDT, Thursday, July 30, from NASA’s Johnson Space Center in Houston.

NASA will stream these events through a variety of platforms. Learn where to watch online:

https://www.nasa.gov/live

NASA participants in the news conference include:

  • Bill Spetch, deputy manager of Commercial, Low Earth Orbit Program
  • Chris Dobbins, spacewalk flight director
  • Chloe Mehring, spacewalk flight director

United States-based media interested in attending in person must contact the Johnson newsroom no later than 3 p.m., Wednesday, July 29, at jsccommu@mail.nasa.gov. Media joining by phone should request dial-in details by the same deadline. To ask a question, media must dial in no later than 15 minutes before the start of the news conference.

Thursday, Aug. 6

NASA astronauts Jessica Meir and Anil Menon will exit the Quest airlock to install hardware that will modify the station’s 3B power channel and prepare it for the future installation of an International Space Station Roll-Out Solar Array (IROSA). The solar array, scheduled for delivery later this year, will be the seventh IROSA and will provide additional power to support critical station operations, including its safe and controlled deorbit.

Watch NASA’s live coverage of U.S. spacewalk 96 beginning at 6:30 a.m. The spacewalk is expected to start at 8 a.m. and last about six and a half hours.

This spacewalk will be the sixth for Meir and the first for Menon. Meir will serve as spacewalk crew member 1 and will wear a suit with red stripes. Menon will serve as crew member 2 and will wear an unmarked suit.

Thursday, Aug. 13

During U.S. spacewalk 97, two astronauts will replace a Space-to-Ground antenna on the orbital complex. The antenna is a critical communication system NASA uses to transmit data and high‑speed communication between the Mission Control Center in Houston and the space station.

Tuesday, Aug. 25

The U.S. spacewalk 98 crew members will connect power channel cables and data relay systems as part of ongoing maintenance, including preparations for the space station’s future deorbit. The astronauts also will replace a navigational aid used for spacecraft docking on the Harmony module’s forward port.

NASA will share additional details about U.S. spacewalks 97 and 98, including timing, assigned crew members, and coverage information, closer to each operation.

The spacewalks will be the 281st, 282nd, and 283rd conducted in support of space station assembly, maintenance, and upgrades.

To learn more about International Space Station research, operations, and its crews, visit:

https://www.nasa.gov/station

-end-

Joshua Finch / Jimi Russell
Headquarters, Washington
202-358-1100
joshua.a.finch@nasa.gov / james.j.russell@nasa.gov

Sandra Jones / Anna Schneider 
Johnson Space Center, Houston 
281-483-5111 
sandra.p.jones@nasa.gov / anna.c.schneider@nasa.gov

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Last Updated
Jul 27, 2026

TechCrunch - Latest

PSA: your Claude shared chats and Artifacts may have ended up on Google

2026-07-27 20:19

An untold number of Claude chats and Artifacts — the interactive mini apps and documents users can build inside Claude — were found publicly searchable on Google over the weekend, after Reddit users discovered that typing search operators like “site:claude.ai/share” into Google surfaced a long list of shared conversations. Some reportedly contained health records, private […]
Microsoft launches its first cybersecurity model, plus a new agentic cybersecurity system

2026-07-27 18:32

Microsoft bolstered its AI cybersecurity offerings this week with the launch of its first AI security model and a new security platform.
Apple sued after alleged App Store crypto scam cost users $1.8M

2026-07-27 18:28

Apple is facing a lawsuit from three users who say they collectively lost more than $1.8 million after downloading a fraudulent crypto wallet from the App Store, challenging the company’s longstanding claims that its app review process keeps users safe from scams.
Amazon’s new satellite network for mobile phones could turn up the heat on SpaceX

2026-07-27 18:08

Amazon is expanding its plans for providing satellite connectivity to mobile phones.
Antares raises $470M to build nuclear reactors for the US military

2026-07-27 17:49

Antares has raised $470 million to build small modular reactors — 100 kW to 1 MW — for U.S. Air Force bases.
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