Friday, April 3, 2026

Liftoff! NASA Launches Astronauts on Historic Artemis Moon Mission & NASA's Artemis II Moon Mission Lifts Off

The SLS (Space Launch System) launches with the Artemis II crew aboard the Orion spacecraft on April 1, 2026, at NASA’s Kennedy Space Center in Florida.

Credit: NASA/Bill Ingalls

Spurred by American ingenuity, astronauts on NASA’s Artemis II mission are in flight, preparing for the first crewed lunar flyby in more than 50 years.

NASA’s SLS (Space Launch System) rocket lifted off from Launch Pad 39B at the agency’s Kennedy Space Center in Florida at 6:35 p.m. EDT Wednesday, sending four astronauts aboard the Orion spacecraft on a planned test flight around the Moon and back.

“Today’s launch marks a defining moment for our nation and for all who believe in exploration. Artemis II builds on the vision set by President Donald J. Trump, returning humanity to the Moon for the first time in more than 50 years and opening the next chapter of lunar exploration beyond Apollo. Aboard Orion are four remarkable explorers preparing for the first crewed flight of this rocket and spacecraft, a true test mission that will carry them farther and faster than any humans in a generation,” said NASA Administrator Jared Isaacman. “Artemis II is the start of something bigger than any one mission. It marks our return to the Moon, not just to visit, but to eventually stay on our Moon Base, and lays the foundation for the next giant leaps ahead.”

The successful launch is the beginning of an approximately 10-day mission for NASA astronauts Reid Wiseman, Victor Glover, Christina Koch, and CSA (Canadian Space Agency) astronaut Jeremy Hansen. As the first crewed mission of NASA’s Artemis program, among its objectives, the flight will demonstrate life support systems for the first time with crew and lay the foundation for an enduring presence on the Moon ahead of future missions to Mars.

After reaching space, Orion deployed its solar array wings, enabling the spacecraft to receive energy from the Sun, while the crew and engineers on the ground immediately began transitioning the spacecraft from launch to flight operations to start checking out key systems.

“Artemis II is a test flight, and the test has just begun. The team that built this vehicle, repaired it, and prepared it for flight has given our crew the machine they need to go prove what it can do,” said NASA Associate Administrator Amit Kshatriya. “Over the next 10 days, Reid, Victor, Christina, and Jeremy will put Orion through its paces so the crews who follow them can go to the Moon’s surface with confidence. We are one mission into a long campaign, and the work ahead of us is greater than the work behind us.”

About 49 minutes into the test flight, the SLS rocket’s upper stage fired to put Orion into an elliptical orbit around Earth. A second planned burn by the stage will propel Orion, which the crew named “Integrity,” into a high Earth orbit extending about 46,000 miles beyond Earth. After the burn, Orion will separate from the stage, flying free on its own.

In several hours, a ring on the rocket’s upper stage, which will be a safe distance away from the spacecraft, will deploy four CubeSats – small satellites from Argentina’s Comisión Nacional de Actividades Espaciales, German Aerospace Center, Korea AeroSpace Administration, and Saudi Space Agency – to perform scientific investigations and technology demonstrations.

The spacecraft will remain in high Earth orbit for about a day, where the crew will conduct a manual pilot demonstration to test Orion’s handling capabilities. The astronauts, with Mission Control Center teams at NASA’s Johnson Space Center in Houston, will continue checking spacecraft systems.

If all systems remain healthy, mission controllers will give Orion’s European-built service module a command to conduct the translunar injection burn on Thursday, April 2. This move is an approximately six-minute firing to send the spacecraft on a trajectory that will simultaneously carry crew around the Moon, while also harnessing lunar gravity to slingshot them back to Earth.

During a planned multi-hour lunar flyby on Monday, April 6, the astronauts will take photographs and provide observations of the Moon’s surface as the first people to lay eyes on some areas of the far side. Although the lunar far side will only be partially illuminated during the flyby, the conditions should create shadows that stretch across the surface, enhancing relief and revealing depth, ridges, slopes and crater rims that are often difficult to detect under full illumination. Crew observations and other human health scientific investigations during the mission, such as AVATAR, will inform science during future Moon missions.

Following a successful lunar flyby, the astronauts will return to Earth and splash down in the Pacific Ocean.

As part of Golden Age of innovation and exploration, NASA will send Artemis astronauts on increasingly difficult missions to explore more of the Moon for scientific discovery, economic benefits, and to build on our foundation for the first crewed missions to Mars.

Follow the latest mission progress, including more images from the test flight, visit: https://www.nasa.gov/mission/artemis-ii/ 

Source: Liftoff! NASA Launches Astronauts on Historic Artemis Moon Mission - NASA 

Stroke triggers a hidden brain change that looks like rejuvenation


In a new study published in The Lancet Digital Health, scientists at the USC Mark and Mary Stevens Neuroimaging and Informatics Institute (Stevens INI) have discovered that the brains of people who experience severe physical impairment after a stroke may reorganize themselves in unexpected ways, showing signs of “younger” brain structure in undamaged regions as they adapt to injury.


The international research effort is part of the Enhancing NeuroImaging Genetics through Meta-Analysis (ENIGMA) Stroke Recovery Working Group, which analyzed brain scans from more than 500 stroke survivors across 34 research sites in eight countries. Using deep learning models trained on tens of thousands of MRI scans, the researchers estimated the “brain age” of different regions in each hemisphere to see how stroke damage affects brain structure and recovery.


“We found that larger strokes accelerate aging in the damaged hemisphere but paradoxically make the opposite side of the brain appear younger,” said Hosung Kim, PhD, associate professor of research neurology at the Keck School of Medicine of USC and co-senior author of the study. “This pattern suggests the brain may be reorganizing itself, essentially rejuvenating undamaged networks to compensate for lost function.”


The research team used an advanced form of artificial intelligence known as a graph convolutional network to predict the biological age of 18 brain regions from MRI data. The difference between a person’s predicted brain age and their actual chronological age, known as the brain-predicted age difference (brain-PAD), served as a sensitive marker of neural health.

When the team associated these measurements with motor performance scores, they found a striking pattern: stroke survivors with severe movement deficits, even after more than 6 months of rehabilitation, showed younger-than-expected brain age in regions opposite the lesion, particularly within the frontoparietal network, a key system involved in motor planning, attention, and coordination.

“These findings suggest that when stroke damage leads to greater movement loss, undamaged regions on the opposite side of the brain may adapt to help compensate,” Kim explained. “We saw this in the contralesional frontoparietal network, which showed a more ‘youthful’ pattern and is known to support motor planning, attention, and coordination. Rather than indicating full recovery of movement, this pattern may reflect the brain’s attempt to adjust when the damaged motor system can no longer function normally. This gives us a new way to see neuroplasticity that traditional imaging could not capture.”

The study was conducted through ENIGMA, a global alliance that unites data from more than 50 countries to better understand the brain across diseases. Researchers harmonized MRI data and clinical measures across dozens of cohorts to build the world’s largest stroke neuroimaging dataset of its kind.

“By pooling data from hundreds of stroke survivors worldwide and applying cutting-edge AI, we can detect subtle patterns of brain reorganization that would be invisible in smaller studies. These findings of regionally differential brain aging in chronic stroke could eventually guide personalized rehabilitation strategies,” said Arthur W. Toga, PhD, director of the Stevens INI and Provost Professor at USC.


The team plans to expand their work to include longitudinal studies tracking patients from the acute to chronic stages of stroke recovery. By observing how patterns of brain aging and reorganization develop over time, clinicians might be able to customize interventions based on each patient’s unique neural adaptation process, ultimately improving recovery outcomes and quality of life in the near future.

Source: https://keck.usc.edu/news/usc-study-identifies-brain-rewiring-mechanism-that-may-aid-stroke-recovery/ 

Source: Stroke triggers a hidden brain change that looks like rejuvenation – Scents of Science