Science
NASA will attempt to launch astronauts to the moon today. What to know and how to watch
On Wednesday, for the first time since 1972, NASA is attempting to launch astronauts to the moon.
The space agency is targeting a 3:24 p.m. Pacific time launch of the colossal Space Launch System rocket with four astronauts aboard. Once off the ground, the crew — including Southern California native Victor Glover — will fly past the moon (but not land on the lunar surface or enter its orbit) and splash down off the coast of San Diego in roughly 10 days.
How to watch
NASA has already begun around-the-clock coverage of the entire mission — including launch preparations, liftoff, the lunar flyby and splashdown — on its YouTube page.
NASA is also livestreaming major milestones, including the launch, on its X account, Facebook page, Twitch profile and website.
If cable television is more your speed, C-SPAN is covering the launch (featuring its famous viewer calls).
Backup dates
The launch is ultimately dependent on the weather. The forecast shows an 80% chance of favorable weather for launch, with some potential for clouds and high winds at ground level that could delay the mission. Wednesday’s launch opportunity is open for two hours, until 5:24 p.m.
If weather or minor technical concerns prevent launch Wednesday, NASA has additional two-hour launch windows every evening through April 6. After that, it would have to wait until at least April 30.
The historical significance
Artemis II is the first mission since Apollo 17 in 1972 to carry humans to the moon. The capsule will carry the first Black person, first woman and first non-American to travel around the moon — potentially traveling farther and reentering the Earth’s atmosphere faster than any other human mission in history.
Although the astronauts will not land on the moon, Artemis II mimics early Apollo missions that were designed as a stepping stone to test all of the equipment and procedures before making the daring landing.
A springboard to Mars
The Artemis program ultimately aims to land humans back on the moon, help the space agency establish a lunar base and serve as the testing grounds for future missions to Mars.
NASA plans to launch Artemis III, a mission in Earth’s orbit to test docking the NASA spacecraft with SpaceX’s and Blue Origin’s lunar landers, in 2027. It aspires to launch Artemis IV, which would put humans on the surface of the moon, in 2028.
new video loaded: Scientists Solve ‘Golden Orb’ Mystery
transcript
transcript
Scientists Solve ‘Golden Orb’ Mystery
After more than two years of investigation, the U.S. National Oceanic and Atmospheric Administration have identified an unknown creature dubbed the “golden orb.” The orb perplexed researchers and enthusiasts of the deep sea around the world after it was found in 2023 near Alaska.
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“I don’t know what to make of that.” “Yeah, let’s give it a little tickle.” “Ooh — soft.”
By Alisa Shodiyev Kaff
April 24, 2026
NASA follows international guidelines called the Planetary Protection protocol, aimed at making sure Earth’s biology doesn’t taint celestial bodies, and vice versa. The agency also has a dedicated team, the Jet Propulsion Laboratory’s biotechnology and planetary protection group, or B.P.P.G., that oversees efforts to avoid cross-contamination on missions.
Several scientists behind the new research, including the study’s leader, Kasthuri Venkateswaran, a former senior scientist at the Jet Propulsion Laboratory, have worked in the protection group, so they knew firsthand that hardy microbes existed. Still, Dr. Venkateswaran called the fungal strain’s survival “remarkable.”
Previous studies have identified various bacteria and fungi on NASA facility surfaces, including the ultrafiltered clean rooms, where spacecraft are constructed and tested. There, employees involved in assembly wear full-body coveralls and masks, but decontamination techniques are currently focused on eliminating bacteria, not fungi.
In the study, researchers examined 27 fungal strains they had acquired from the floors of NASA clean rooms used in the Mars 2020 mission, which landed the Perseverance rover on Mars, plus two control microbes known to tolerate radiation well. Most of the samples that survived a preliminary ultraviolet screening and underwent more intense treatments died quickly, but the A. calidoustus, which had been taken from a Florida assembly facility, endured.
The scientists subjected the A. calidoustus spores to six months of chronic neutron radiation — mimicking space travel — and almost half of them survived. They heated them with 125 degree Celsius dry heat, typically used to sterilize spacecraft components, and the spores outlasted even Bacillus pumilus, a species that NASA often uses as a benchmark. And they treated the spores with harsh conditions that mirrored the experience on Mars itself: 24 hours of extreme UV radiation, plus low atmospheric pressure and the average annual Mars surface temperature of negative 60 degrees Celsius.
The Food and Drug Administration on Thursday approved a gene therapy that can cure a rare, inherited form of deafness. The treatment is the first to restore normal hearing in children who were born deaf.
The maker of the therapy, Regeneron, plans to provide it free to any child who needs it. “We wanted to make a statement,” Dr. George Yancopoulos, Regeneron’s chief scientific officer said on Thursday morning.
He explained that the company wants to be sure its treatment “would be able to reach its full potential and help as many people as possible.”
Some gene therapies for other diseases, priced in the millions of dollars, have had dismal sales.
The therapy called Otarmeni, is intended for children with otoferlin deafness, a rare form of hearing loss caused by a mutation in a single gene. The mutation destroys a protein in the inner ear that is needed to transmit sound to the brain.
Although otoferlin deafness accounts for just 2 percent to 8 percent of congenital hearing loss, the new treatment “is groundbreaking,” Dr. Dylan Chan, a pediatric otolaryngologist at the University of California, San Francisco, said.
He added, “This is the first time in history that there has been a medical therapy that has enabled deaf children to hear.”
Dr. Chan has been a paid adviser to Regeneron and to Eli Lilly, which is also developing a gene therapy for otoferlin deafness. He is also a principal investigator for Lilly’s clinical trial of the treatment.
Dr. Daniel Lee, the director of pediatric otology and neurotology at the Massachusetts Eye and Ear Infirmary, said he also viewed the therapy as groundbreaking. “We have now entered the era of biological treatment for inner ear hearing loss,” he said.
Dr. Lee is on the advisory board of a small biotech company, Skylark Bio, that is developing gene therapy for a different form of inherited deafness.
Until now, the only treatment for otoferlin deafness was a cochlear implant, an electronic device placed in the inner ear. The implants can restore sound but not normal hearing. And the sounds come through as robotic or tinny.
People with cochlear implants have difficulty in noisy environments. They do not hear high frequencies. And at night they have to recharge the batteries, leaving them deaf until the morning.
In addition to Regeneron and Lilly, two other companies, in China and in France, are also developing gene therapies for otoferlin deafness.
Dr. Eliot Shearer, a pediatric surgeon who specializes in hearing loss at Boston Children’s Hospital, said the otoferlin gene therapy is only the beginning of treatments for deafness. “There are over 150 known genetic causes of hearing loss, and thousands of mutations in those genes,” Dr. Shearer said. “Now that it is known that it’s possible to correct genetic hearing loss, new possibilities open up.”
Dr. Shearer is a principal investigator of both the Regeneron and Lilly otoferlin clinical trials.
To treat deafness with gene therapy, researchers had to solve a problem: getting the genes to the cochlea, a spiral shaped cavity almost at the center of the skull. The cochlea is filled with fluid and lined with 3,500 inner hair cells, each tuned to a specific pitch.
Sound vibrations ripple through the fluid, bending the microscopic hairs. When a hair cell bends, it fires. An electric signal travels along the auditory nerve to the brain, and the person hears the sound.
Researchers chose to focus on otoferlin deafness because its cause was straightforward. The otoferlin gene is expressed only in the hair cells of the inner ear. The inner ear structures, including the hair cells, are intact. So to allow patients to hear, doctors simply needed to deliver a working copy of the otoferlin gene.
Otolaryngologists had long thought that injecting a medicine into the inner ear would inevitably damage the delicate cells and membranes of the cochlea.
But children with otoferlin deafness are already unable to hear. Even if an attempt at gene therapy damaged their inner ears, they could still receive cochlear implants.
“It was the perfect target,” Dr. Chan said.
Kerri M., whose baby, Miles, had otoferlin deafness, said gene therapy “completely changed our lives.” She spoke on condition of anonymity because she wanted to protect her son’s diagnosis from appearing on the internet.
Dr. Shearer said Miles’s hearing loss was so profound that he could not hear a jet engine if it were next to him.
Miles was given the Regeneron therapy on May 19, 2025, when he was 13 months old. At his last visit, his hearing was normal.
“We are so fortunate,” his mother said. “Our baby was born deaf, and now he can hear.”
Most children who received the gene therapy have had hearing restored, but not all have been as fortunate as Miles. So far, Dr. Chan said, about 80 percent of the patients who have been treated successfully in clinical trials were able to hear well without needing cochlear implants.
Most still needed a hearing aid, but about 30 percent of those who could hear after the treatment were like Miles — their hearing was in the normal range.
The next target for the scientists working on gene therapies to correct deafness is mutations in the GJB2 gene. It causes the most common form of congenital hearing loss in children and accounts for about 20 percent of cases.
Dr. Lee explained that the biology of GJB2 deafness is more complex than that of otoferlin, because cells in the cochlea are damaged. Otoferlin’s gene therapy, in contrast, is like fixing a broken wire — the cells are normal, they just can’t transmit a signal.
Dr. Lee said Skylark Bio hopes to start a gene therapy clinical trial this year for GJB2-related deafness in children 9 months old to 7 years old in the United States.
Dr. John Germiller, a pediatric otology surgeon at Children’s Hospital of Philadelphia and the University of Pennsylvania, predicted that the next frontier will be people with genes that cause progressive hearing loss, not necessarily babies.
Hearing loss and the loss of hair cells in the cochlea tend to occur together, he said. The goal will be to use gene therapy to save the hair cells that are remaining.
Dr. Germiller is a principal investigator for the Lilly otoferlin trial and treated the first patient in the United States two years ago.
Dr. Chan offered an even more ambitious hope for the future — the end of most forms of deafness.
“A lot of people are working on how to reprogram cells of the inner ear to rebuild themselves,” Dr. Chan said. The hope is to recreate the cochlea.
“That,” Dr. Chan added, is “the ultimate holy grail.”
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