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Engineers teach spacecraft to 'dream' their way to the space station
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Engineers teach spacecraft to 'dream' their way to the space station

Docking with the ISS may seem simple. However, actually doing so shows how difficult orbital mechanics can be. It's like traveling down a highway at 28,000 km/hr (17,000 mph) and parallel parking in an open garage on a multibillion-dollar laboratory traveling at the same speed. If you try to accelerate forward, you actually drift up, and there's no air friction to naturally slow you down. Oh, and if you hit the lab, everyone aboard both your craft and the station dies, and the resulting debris field could wipe out dozens of satellites and even harm people on the ground. No pressure, obviously.

📅 2026-09-26 18:00:01    •    Phys.org
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A real-time look inside spacecraft heat shields during extreme heat conditions
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A real-time look inside spacecraft heat shields during extreme heat conditions

When a spacecraft reenters Earth's atmosphere at hypersonic velocities, its protective heat shield faces extreme conditions, including temperatures beyond 3,000 degrees Fahrenheit (1,650 degrees Celsius). To survive, the shield relies on specialized materials that absorb heat as they degrade in a controlled process called ablation, sacrificing the shield's outer layers to protect the vehicle and crew within.

📅 2026-09-26 16:00:01    •    Phys.org
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A major risk of breast cancer screening may have been overestimated for decades
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A major risk of breast cancer screening may have been overestimated for decades

A new analysis suggests mammograms may lead to far less breast cancer overdiagnosis than some earlier studies indicated. Researchers reexamined all eight major randomized screening trials and accounted for differences in follow-up time, screening frequency, and screening after trials ended. Their results were consistent with an overdiagnosis rate below 5%, rather than estimates approaching 30% to 50%.

📅 2026-09-26 15:25:30    •    ScienceDaily
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Crop protection: A new method for understanding insect sexual communication
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Crop protection: A new method for understanding insect sexual communication

A team of INRAE scientists, in collaboration with Université Côte d'Azur and Nanjing Agricultural University in China, has used an innovative AI-based method to identify the sex pheromone of the lily moth1 and the olfactory receptors associated with it. The insect pest, whose caterpillars feed on these plants, is found in Asia and Oceania. This approach to identifying previously unknown molecules opens up new possibilities for identifying pheromones in other species. These molecules play a key role in certain biocontrol strategies currently used to protect crops, particularly in France. The results were obtained as part of the EXPLOR'AE program and published in BMC Biology.

📅 2026-09-26 15:00:01    •    Phys.org
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Scientists may have misread a 2-billion-year-old clue about Earth
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Scientists may have misread a 2-billion-year-old clue about Earth

Scientists have found that a famous 2-billion-year-old chemical signature, once thought to record a massive global change in Earth’s carbon cycle, may instead have been produced by local magma, hydrocarbons, and methane-eating microbes. The discovery raises new questions about what was really happening as oxygen transformed the young planet.

📅 2026-09-26 14:38:02    •    ScienceDaily
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Two astronauts who flew farther than anyone before are taking new NASA roles
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Two astronauts who flew farther than anyone before are taking new NASA roles

Artemis II astronauts Victor Glover and Reid Wiseman are transitioning to emeritus status at NASA after their historic journey around the Moon earlier this year. The pair will continue advising and mentoring NASA teams as preparations accelerate for Artemis III and future lunar missions. Their experience with Orion and deep-space operations could prove especially valuable as NASA works toward returning astronauts to the lunar surface.

📅 2026-09-26 13:21:58    •    ScienceDaily
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Molecular 'self-destruct' switch discovered: How stressed cells decide between survival and death
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Molecular 'self-destruct' switch discovered: How stressed cells decide between survival and death

A new study from Ben-Gurion University of the Negev (BGU) has identified a molecular switch that controls whether stressed human cells activate a survival mechanism or trigger programmed cell death (apoptosis). The findings, published in Redox Biology, provide insights that could help overcome chemotherapy resistance in aggressive tumors.

📅 2026-09-26 12:00:07    •    Phys.org
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Digital textbooks significantly boost students' intrinsic learning motivation
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Digital textbooks significantly boost students' intrinsic learning motivation

A research team from The Education University of Hong Kong (EdUHK) and East China Normal University (ECNU) has published a meta-analysis demonstrating the impact of digital textbooks (DTs) on student motivation. Synthesizing 27 experimental and quasi-experimental studies conducted between 2000 and 2024 with 3,590 participants, the study confirms that DTs significantly enhance students' intrinsic learning motivation compared with traditional paper textbooks.

📅 2026-09-26 12:00:05    •    Phys.org
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Why the tomb of the 'Disturber of the Universe' remains hidden after 800 years
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Why the tomb of the 'Disturber of the Universe' remains hidden after 800 years

History is rife with lost treasures, from Aztec gold hidden during the Spanish conquest to the Ark of the Covenant, which vanished during the destruction of Jerusalem over 2,500 years ago. In his book, "The Museum of Lost Things: True Tales of Fabled Treasures, Legendary Cities, and Mythical Creatures That Vanished From History" (National Geographic Books, 2026), writer Sam Kean examines all things lost to time. In this excerpt from the book, he looks at how the tomb of Genghis Khan, arguably the most successful ruler in history, has remained hidden for nearly 800 years and counting. If archaeologists could vote on which lost grave they'd most like to find, Genghis Khan's would likely appear...

📅 2026-09-26 12:00:00    •    Live Science
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REM sleep paradox: Dreaming may drain the brain’s energy even as fuel supply rises
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REM sleep paradox: Dreaming may drain the brain’s energy even as fuel supply rises

Scientists discovered a surprising energy paradox in the brain during REM sleep, the stage most closely associated with dreaming. Blood supply to the brain begins increasing even before REM starts, but neurons’ immediately available energy, measured as ATP, then drops. The finding suggests that dreaming may require such intense internal processing that neurons consume energy faster than it can be replenished.

📅 2026-09-26 11:30:49    •    ScienceDaily
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Harvest Moon 2026: See the first full moon of autumn rise alongside Saturn tonight
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Harvest Moon 2026: See the first full moon of autumn rise alongside Saturn tonight

One of the most famous full moons of the year will climb into the eastern sky on Saturday, Sept. 26. This year, the Harvest Moon will make its appearance with Saturn shining nearby — and you'll have another chance to see it rise on Sunday, Sept. 27, too.Officially full at 12:49 p.m. EDT on Saturday, the full moon will be best seen rising in the eastern sky later that day, at the time of moonrise where you are. It will appear in the constellation Pisces.This month's full moon earns the Harvest Moon nickname because it's the full moon closest to the September equinox, which fell on Tuesday (Sept. 22). This year, it coincides with the Mid-Autumn Festival — also called the Moon Festival — which ...

📅 2026-09-26 10:30:00    •    Live Science
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Why does lithium work against bipolar disorder?
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Why does lithium work against bipolar disorder?

In modern times we tend to think of lithium as powering smartphones and cars, yet its historical fame comes from its role as a mood stabilizer.Lithium was first used as a treatment for bipolar disorder in 1949. Yet despite decades of research and drug development, this simple medication remains the gold standard for treating one of the most complex psychiatric conditions. But why?According to Becci Strawbridge, a senior lecturer in psychological medicine at King's College London, lithium's simplicity could be what helps it cut through the complexity of bipolar disorder, a lifelong disorder that affects about 36 million people worldwide.Clinically, bipolar disorder is defined as a mood disord...

📅 2026-09-26 09:00:00    •    Live Science
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