Science
Video Shows Mars and Deimos Close Up During ESA’s Hera Flyby
An asteroid-chasing spacecraft just swung past Mars on Wednesday. As it zipped by, it took hundreds of shots of the Red Planet, as well as several snaps of Deimos, one of the two small Martian moons.
The operators of the European Space Agency’s Hera spacecraft were bewitched by the sci-fi aesthetics of the pictures.
“We were waiting with impatience to get these images,” said Patrick Michel, the principal investigator for Hera, during a Thursday news conference at mission control in Darmstadt, Germany. When the first shots of the moon appeared, many of the Hera team members burst into cheers. “We’ve never seen Deimos in that way,” Dr. Michel said.
Navigators managed to fly Hera about 600 miles above Deimos, a craggy moon just nine miles long. The pass shows the object in remarkable detail — a small island gliding above the crater-scarred Martian desert.
During the news conference, Ian Carnelli, the Hera project manager, was misty-eyed. “I’m going to get emotional,” he said. “The excitement was such that we didn’t get any sleep.”
Hera was using Mars in what is known as a gravity assist, both accelerating the spacecraft and adjusting its flight path. But its mission operators also wanted to take advantage of the Martian flyby and use it to test the mechanical eyes that will allow Hera to study the asteroid it is targeting, Dimorphos.
In the coming days, the mission’s scientists will reveal more photographs from Hera’s encounter with Mars, which may include shots of Phobos, the planet’s other moon.
As with any planetary flyby, there were some nerves about whether Hera would conduct its maneuvers properly and end up on the right trajectory. “The spacecraft behaved very well,” said Sylvain Lodiot, the Hera operations manager. “We’re on track to the asteroid system.”
Hera is headed to Dimorphos as a follow-up to a 2022 NASA mission, the Double Asteroid Redirection Test. DART deliberately crashed a spacecraft into that asteroid, aiming to change its orbit around a larger asteroid, Didymos. That was a test of whether a dangerous space rock bound for Earth could be deflected in a similar manner.
The experiment successfully changed the orbit of Dimorphos. But the asteroid’s physical nature, and its full response to DART’s collision, remains unclear; some evidence suggests that it acted like a fluid when hit, rather than a solid, causing it to eject a lot of debris and reshape itself.
When it comes to stopping lethal asteroids from striking Earth, the more scientists know about their rocky enemies, the better prepared they will be should one come careening our way. To aid that effort, the European Hera mission will arrive at Dimorphos in late 2026 for a close-up study of the DART-impacted asteroid.
This Wednesday, during Hera’s flyby of Mars and Deimos, the spacecraft used three cameras — including a thermal infrared imager supplied by the Japan Aerospace Exploration Agency.
Mars’s two moons have mysterious origins. Both could be pieces of a disintegrating asteroid captured by the planet’s gravity, or perhaps the flotsam and jetsam leftover from a giant impact event on Mars.
Deimos is tidally locked, meaning one hemisphere permanently faces Mars. This near side is the one most commonly seen by spacecraft orbiting the planet, or by rovers driving across its surface. Hera managed to fly behind Deimos, meaning it caught a rare sight.
“It’s one of the very few images we have of the far side of Deimos,” said Stephan Ulamec, a researcher at the German Aerospace Center and member of the Hera team.
This opportunistic peek at Mars and Deimos was exciting. But the team is especially thrilled that Hera is now on its way to its asteroid destination. “We’re all looking forward to what Didymos and Dimorphos will look like,” Dr. Michel said.
Science
China Launches Reusable Rocket in Race With SpaceX
Video released by Chinese state media shows a state-owned aerospace company launching a rocket and recovering part of it on Friday. The successful launch of a reusable rocket was a major step for China toward challenging SpaceX’s satellite internet dominance.
Science
Nobel Prize winner leaving UC Berkeley for new role in China
Nobel Prize recipient Omar Yaghi is leaving his role at UC Berkeley to lead the development of a new artificial intelligence institute at Tsinghua University in Beijing, the Chinese university announced.
Yaghi will head the AI Chemistry and Materials Research Institute at Tsinghua, where he was appointed an honorary professor in 2022. Known as AIMATRY (AI × Materials × Chemistry), the new center will focus on material design and synthesis through artificial intelligence, according to a statement from the university.
In 2025, Yaghi shared the Nobel Prize in chemistry with Susumu Kitagawa of Kyoto University and Richard Robson of the University of Melbourne for their development of metal-organic frameworks, a type of super-porous material in which metal ions and carbon-based molecules combine to form crystals with exceptionally large surface areas.
The material has the potential to combat climate change by capturing and storing carbon or other pollutants, and by extracting water from the atmosphere in water-scarce areas. Upon awarding the prize, a member of the Nobel committee likened the technology’s ability to store enormous amounts of stuff in seemingly compact spaces to Hermione Granger’s enchanted handbag in the Harry Potter series.
Yaghi’s Irvine-based company, Atoco, has said it will start taking orders later this year for its technology that harvests water from the air.
A representative for Yaghi said he was not yet available to respond to questions.
China is one of several countries that has been actively recruiting scientists from the U.S., where the Trump administration has slashed science funding, suspended research grants, fired science advisors and tightened immigration restrictions.
“For many, many years, our funding was very competitive; if you worked hard and you were doing good research, you would get funding,” Yaghi said of the U.S. in an interview with Scientific American earlier this year. “The current state is not so encouraging because of the cutting back on grants and support of science by the very agencies that many university researchers rely on.”
Yaghi was born in Jordan to Palestinian refugees, and immigrated to the U.S. when he was 15 to study.
“We’ve learned over and over in human civilization that scholars can move across borders,” Yaghi told the New York Times last year. “This is how knowledge spread and how vast regions of the world lifted themselves out of poverty.”
Science
Trump administration seeks to limit federal funding that doesn’t ‘advance’ presidential policies
A new rule proposed by the White House Office of Management and Budget would fundamentally overhaul the way federal grants are awarded and overseen — a sweeping change that one scientific society said “would all but end the use of scientific merit in the selection of grants and programs across the government.”
Proposed in late May, the rule would give political appointees unprecedented control over federal grants for research, education and infrastructure, and specifies that government funds can only be spent on projects “aligned with administration policies and priorities,” according to a copy of the proposed rule.
The rule would also restrict research topics, limit U.S. scientists’ ability to collaborate with colleagues in other countries and make it easier for the government to suspend or cancel grants at any time.
The changes are intended to improve “transparency, accountability, and oversight for Federal awards” while “ensuring that American tax dollars are not wasted or misused,” according to the White House office.
But critics say that if the rule is implemented, the final sign-off for grants will no longer be in the hands of subject-matter experts within individual agencies, but in those of political appointees.
“This touches all parts of American life,” said Dr. Eric Rafla-Yuan, a psychiatrist who practices at the Veterans Administration and San Diego County’s psychiatric hospital.
“Control of how all of the federal grants and programs are funded will fall under a small group of highly partisan individuals who would have very few limits on how they spend these billions of taxpayer dollars,” said Rafla-Yuan, who also chairs the Committee to Protect Public Mental Health advocacy group. “This touches everyone’s life, even if they don’t realize it.”
OMB published the proposed rule May 29, opening a 45-day comment period that closes July 13.
Opposition to the proposed rule has mobilized multiple sectors of society. Professional groups representing cancer researchers, civil engineers, county governments, medical schools, housing agencies, city and municipal governments, nonprofits and others have publicly expressed concerns about potential consequences.
By midday Thursday, the Federal Register logged nearly 100,000 comments about the proposal, many of them expressing concern.
“I understand the need for oversight, fiscal responsibility, and accountability. That is not the issue,” wrote Jack Feldman, a neuroscientist who holds the David Geffen School of Medicine Chair in Neuroscience at UCLA. “The issue is whether scientific research is to be judged by scientific merit, or whether it can be approved, denied, or terminated according to broad political criteria that may change from one administration to the next.”
Crucially, the rule converts policies governing federal grants from “guidance” into binding regulations that all agencies would be required to follow. It would give political appointees power to override federal agencies’ merit-based reviews and mandate that a political appointee review decisions to ensure that all awards “demonstrably advance the President’s policy priorities.”
The elevation of political appointees in what were previously merit-based decisions has alarmed many scientists.
“The proposed rule changes would all but end the use of scientific merit in the selection of grants and programs across the government,” read a statement from the Planetary Society, a nonprofit dedicated to space research.
Researchers and science groups have also expressed concern about a section of the rule prohibiting the promotion of “theories of disparate-impact liability” — a legal concept that refers to policies that appear neutral but cause disproportionate harm to certain groups.
The section’s vague language and many loopholes could have a chilling effect on any research that studies the effects of a disease, policy or public health intervention on any specific group of people, Rafla-Yuan said.
As an example, he said, “if there’s a specific age range that is at higher risk for suicide, and we want to figure out, well, what’s going on with people that are aged 14 to 19 … we can’t do that under the wording in this rule.”
New restrictions on collaborations with scientists in other countries would hinder opportunities for U.S. researchers and limit innovation, said Joanne Padrón Carney, chief government relations officer for the American Assn. for the Advancement of Science.
“Science is a global enterprise. Especially in biomedical and public health fields, diseases don’t care about borders or government policies,” she said.
California’s congressional delegation sent a letter Wednesday asking OMB to rescind the proposal, outlining concerns about its impact on scientific innovation, U.S. competitiveness and the fiscal stability of local governments, many of which rely on federal grants for local services.
The proposed rule grants the federal government broad powers to suspend or cancel grants for any reason, introducing “unprecedented unpredictability into local governance,” the lawmakers wrote, “leaving vital infrastructure projects unfinished and abandoning vulnerable populations who rely on these services.”
Republican Sen. Susan Collins has also asked the White House to withdraw certain parts of the letter and extend the public comment period, saying the proposed rule as written would “harm small and rural communities, undermine scientific and biomedical research, and conflict with Congress’ control over the federal funding process.”
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