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:
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:
NASA's plan to deorbit the International Space Station in coming years has fallen under the scrutiny of a government watchdog group and stirred up a wave of reaction by a leading ocean conservation organization.
As presently blueprinted by NASA, the International Space Station will be de-orbited via a series of actions. Firstly, in early to mid-2028, the ISS will start to be lowered through a combination of Earth's natural atmospheric drag and the execution of re-entry maneuvers by the ISS's Russian segment. Then, in mid-2029, NASA plans to launch a SpaceX-supplied, government paid for, U.S. Deorbit Vehicle (USDV) and attach that craft to the ISS, which will fire its 46 Draco thrusters and push the station down to a watery grave.
But there's one issue that has ecology experts concerned. The Ocean Foundation, a Washington, D.C.-headquartered group with a mission to improve global ocean health and the human relationship with the sea via carefully chosen strategies and projects, says the planned deorbit of the International Space Station "raises serious concerns for ocean health that the space community has not adequately grappled with," according to Mark Spalding, president of the foundation.
A troubling gap
A just-issued U.S. Government Accountability Office (GAO) report has focused on issues related to NASA's plan to bring down the International Space Station (ISS) and transition from the ISS to commercial space stations, namely NASA's concern about having a "gap" in continuous human presence in low Earth orbit.
The GAO report explains that, at the end of 2030 or early 2031, the USDV is to perform a re-entry burn. That would push the ISS through the Earth's atmosphere and into a pre-determined spot – an ocean zone called Point Nemo.
"As part of the reentry process, NASA expects portions of the ISS and deorbit vehicle to break up and fall into the remote part of the ocean to minimize the risk to populated areas," states the GAO report.
SpaceX rendering of its U.S. Deorbit Vehicle (USDV), a Dragon-derived spacecraft with 46 Draco engines designed to propel the International Space Station into a controlled reentry. (Image credit: SpaceX)
But as for using Point Nemo or any part of the ocean as a convenient dumping ground, Spalding told Space.com that "there is a troubling structural gap in international law that the ISS de-orbit throws into sharp relief."
Under the Space Liability Convention of 1972, if space debris falls on another nation's territory or damages property, Spalding said, the launching nation owes compensation - absolutely and without needing to prove fault. "But no equivalent protection exists for the ocean," he said.
"As a result, when space agencies have control over where debris falls, they aim for the high seas, and in doing so, they incur no legal obligation to pay for cleanup or environmental remediation," said Spalding.
The Ocean Foundation leader said he understood the legitimate safety rationale for targeting Point Nemo, the point on Earth farthest from any populated area. "But the ocean's remoteness from human infrastructure should not be mistaken for a lack of value or vulnerability," Spalding said. "The ocean and its creatures deserve the same protection that international law affords to national territories."
Concerning the ocean's ecosystems, Spalding asks what happens to the marine ecosystems and creatures on the seafloor where the ISS leftovers land?
"The honest answer is, we don't fully know. That is deeply troubling for a structure the size of a football field. We do know that not everything burns up on reentry. Denser components will survive and reach the seafloor," Spalding added.
Point Nemo (marked in red) in the south Pacific Ocean is farther from land than any other point on Earth. It is also home to the world's largest "Spacecraft Cemetery." (Image credit: PGC/NASA IBCAO Landsat/USGS/Google)
The problem: uncertainty
What denser, specific materials from the ISS re-entry will be, and what harm they may cause to marine life, Spalding said, "has not been adequately studied or disclosed. That uncertainty is itself the problem."
Additionally, what environmental harm may begin before the debris hits the water is worrisome. As the largest reentry in history, the cumulative atmospheric impact of down-falling ISS hardware deserves serious study, he said.
For one, Spalding flagged a newly negotiated High Seas Treaty (BBNJ Agreement) that is relevant to downing the ISS. It requires parties to conduct environmental impact assessments for activities that may affect the marine environment beyond national jurisdiction when effects are unknown or poorly understood.
"It is fair to ask whether the ISS deorbit — the largest such reentry in history, targeting the high seas — should trigger that obligation," Spalding said.
The International Space Station. (Image credit: NASA/ESA–T. Pesquet)
Position statement
As for the Ocean Foundation's position on the ISS deliberate crashing into the Pacific Ocean, the group believes that discussion points prior to the ISS downing include:
A full environmental impact assessment of the anticipated seafloor debris field and atmospheric effects;
Public disclosure of all materials that will survive reentry and reach the ocean floor;
A rigorous legal analysis of obligations under the UN Convention on the Law of the Sea (UNCLOS,) the London Protocol of 1996 that provides an international standard and framework for countries to individually and collectively protect and preserve our oceans from pollution caused by the dumping of wastes and other matter into the ocean, along with the BBNJ Agreement.
The high seas have no sovereign who can demand accountability, concluded Spalding. "We believe this gap in international law needs to be closed, and the ISS de-orbit is a vivid illustration of why."
SpaceX's Dragon capsule leaves after dropping off some supplies and science at the ISS. (Image credit: NASA/Jessica Meir)
SpaceX's Cargo Dragon capsule shines in the sunlight over Earth as it departs from the International Space Station in a new image snapped from onboard the station.
With sunbeams gleaming downward, reflecting off of the spacecraft's hull, the Dragon can be seen backing away from the station mere moments after undocking from the port on the station's Harmony module. The undocking is so recent that you can clearly see both the docking port and the hatch of the Dragon where the two connected.
The space station has been in orbit since 1998 and continuously occupied since November, 2000. With decades of work in orbit, it can be easy to take for granted the incredible transport system that supports cutting-edge research hundreds of miles above Earth's surface.
The work done on the station is impressive, but this system is just as mind-boggling. In addition to launching and returning astronauts who perform critical maintenance and repair work on the station on top of their research duties, cargo missions keep the station stocked.
From food and clothing to medical equipment and intricate science experiments, these missions are essential for both keeping astronauts safe and healthy on station as well as continuing the progression of science in-orbit. This back-and-forth between Earth and the space station is an impressive feat, and this photo shows the system fully in-motion.
Russian cosmonaut Aleksandr Samokutyaev, who served twice as a crew member aboard the International Space Station (ISS), including during the final US space shuttle mission in 2011, has died at the age of 56.
With Samokutyaev's death on Wednesday, he becomes the first former ISS long-duration resident to die in the 26 years that the space station has been a home to 155 other cosmonauts and astronauts as expedition crew members. The cause of his death is unknown.
Portrait of cosmonaut Aleksandr Samokutyaev.
Credit:
Roscosmos
"The leadership and staff of the Roscosmos State Corporation extend their sincere condolences to the family and loved ones of Aleksandr Mikhailovich," officials with Russia's space agency said in a statement.
Russian cosmonaut Aleksandr Samokutyaev, who served twice as a crew member aboard the International Space Station (ISS), including during the final US space shuttle mission in 2011, has died at the age of 56.
With Samokutyaev's death on Wednesday, he becomes the first former ISS long-duration resident to die in the 26 years that the space station has been a home to 155 other cosmonauts and astronauts as expedition crew members. The cause of his death is unknown.
Portrait of cosmonaut Aleksandr Samokutyaev.
Credit:
Roscosmos
"The leadership and staff of the Roscosmos State Corporation extend their sincere condolences to the family and loved ones of Aleksandr Mikhailovich," officials with Russia's space agency said in a statement.
A part of Canadarm2 robotic arm on the ISS broke in May, requiring repairs by spacewalking astronauts no earlier than June 30. A spare is already on the station.
The southern lights, also known as the aurora australis, were captured by the NASA astronaut Jessica Meir from the International Space Station on Saturday.
NASA's Artemis II crew are the fastest people alive, and now they have the patch to prove it.
Mission Commander Reid Wiseman, pilot Victor Glover, and mission specialists Christina Koch and Jeremy Hansen (the latter with the Canadian Space Agency) spent 10 days in early April flying by the Moon. Their journey took them farther away from Earth than any humans have gone (52,756 miles [406,771 km]) and then, on the way back on board their Orion spacecraft Integrity, they sped up to about 24,664 miles per hour (39,693 k/ph) reentering the atmosphere.
Only three other people in history have traveled faster. NASA's Apollo 10 astronauts Thomas Stafford, John Young, and Eugene Cernan set the record for the highest speed attained by a crewed vehicle relative to the Earth's surface: 24,791 mph (39,897 kph) on May 26, 1969.
NASA has released a new update on a long-running air leak aboard the International Space Station, detailing recent developments involving a troubled section of the orbiting laboratory and precautionary measures taken to protect the crew. The issue involves the PrK transfer tunnel inside Russia’s Zvezda service module, where cracks have been causing small atmosphere leaks [...]
Five of the seven crew members on the International Space Station briefly sought refuge inside a SpaceX return capsule Friday morning as two Russian cosmonauts worked on an air leak on the other end of the complex.
NASA ordered US astronauts Jessica Meir and Jack Hathaway, French astronaut Sophie Adenot, and Russian cosmonaut Andrey Fedyaev into SpaceX's Crew Dragon Freedom spacecraft around 9 am EST (14:00 UTC) on Friday. The foursome launched aboard the SpaceX crew capsule on the Crew-12 mission in February, and the ship serves as their lifeboat until the crew's scheduled return to Earth in September.
NASA astronaut Chris Williams, who flew to the station in a Russian Soyuz ferry ship, joined the Crew-12 astronauts inside the Dragon spacecraft.
NASA has told crew aboard the International Space Station (ISS) to resume normal operations, ending a roughly two-hour period in which five astronauts sheltered inside a docked SpaceX capsule. The shelter order came Friday morning as a precautionary measure to protect crew while Russian cosmonauts attempted a fix on the Zvezda service module’s transfer tunnelContinue reading "ISS crew back to normal after emergency shelter order"
ISS astronauts briefly sheltered aboard an attached SpaceX Dragon capsule today (June 5) while cosmonauts tried to fix a persistent leak on the Russian side of the orbiting lab.
Tom Akers and Joe Tanner are finally in the same class.
The two veteran space shuttle crew members were inducted into the US Astronaut Hall of Fame together on May 16. They could also have been in the same NASA astronaut selection group, too, had history played out a little differently.
In 1984, Tanner reported to the Johnson Space Center (JSC) to fly as an instructor pilot and then applied for the next class of astronaut candidates.
Humans do not just visit space; they live there, but a major part of that is coming to an end. The platform that made the longest continuous human presence in space possible is becoming history.
With NASA and its partners beginning preparations for the destructive end of the International Space Station (ISS) as soon as 2030, those who collect, curate, and study the station are now asking how to preserve the historic and culturally significant artifact, given that it is far too large and complex to keep intact.
The Smithsonian National Air and Space Museum on Thursday hosted a three-part panel discussion, bringing together space program officials, museum curators, an archeologist, and an astronaut to begin answering the why, what, and how the ISS might be saved. The sessions were part of the American Institute of Aeronautics and Astronautics' (AIAA) ASCEND conference in Washington, DC.
NASA confirmed Thursday that the Russian segment of the International Space Station has begun leaking atmosphere into space again. It's an old problem that NASA recently hoped was resolved.
For more than half a decade, engineers from Roscosmos and NASA have been tracking the leak rate from a small Russian module attached to the space station that leads to a docking port. The source of these leaks, microscopic structural cracks, have been difficult to find and address.
In January, NASA said that after multiple inspections and sealant applications, the pressure inside this segment, known as the PrK module, had reached a "stable configuration." The PrK module is essentially a transfer tunnel attached to the Zvezda Service Module on the Russian segment of the space station.
Russian cosmonauts Sergey Kud-Sverchkov and Sergei Mikaev worked to install and retrieve science experiments while on a spacewalk outside the International Space Station on Wednesday, May 27, 2026.
Cosmonauts Sergey Kud-Sverchkov and Sergei Mikaev will perform a spacewalk outside the International Space Station today (May 27), and you can watch the action live.
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Portrait of cosmonaut Aleksandr Samokutyaev.
Credit:
Roscosmos
