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Scientists concluded in a recent research published in April 2025 in Neuroscience & Biobehavioral Reviews provides an in-depth look into how our brain understands the written language. The study has been conducted by researchers at the Max Planck Institute for Human Cognitive and Brain Sciences. The findings of this research have been derived from 163 neuroimaging studies to understand the neural mechanisms behind reading in depth. This comprehensive analysis has shown how different areas of the brain work in synchronisation, mainly the left-hemispheric regions and the cerebellum, to process different written content.

How the Brain Handles Letters to Full Texts

Sabrina Turker, Philip Kuhnke, Gesa Hartwigsen and Beatrice Fumagalli, the researchers involved in the study, found that specific brain areas get activated based on the type of reading. Researchers found that the left occipital cortex’s single cluster was activated after reading letters, whereas words, sentences and paragraphs activated the left hemisphere. While reading pseudo words, unique areas were involved, which has shown the inability of the brain to find the difference between the language that is known and the unknown.

Silent vs. Aloud Reading: What’s the Difference?

A major discovery in this research is the difference between overt (aloud reading) and covert (silent reading) brain activity. Aloud reading triggers the regions linked to sound and movement, whereas silent reading involves more complex multiple-demand areas. According to the researchers, silent reading needs more mental resources than aloud reading.

Explicit vs. Implicit Reading Tasks

The study also revealed the exploration of how the brain responds to explicit reading, i.e. Silent word reading and lexical decision tasks. The former one involves stronger activation in the regions, just like the cerebellar cortices and left orbitofrontal, whereas the implicit reading activated both sides of the inferior frontal, together with insular regions.

Why This Matters

The insights from the study can help support individuals suffering from reading challenges. After knowing how silent reading reacts differently to the brain, educators and doctors can better customise the medical practices for treating disorders such as dyslexia.

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Webb Telescope Uncovers Hidden Active Galactic Nuclei

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May 31, 2025

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Webb Telescope Uncovers Hidden Active Galactic Nuclei

An obscured population of huge and massive black holes has been revealed by the James Webb Space Telescope. This discovery could bridge the gap between quasars and the Little Red Dots. These are active galactic nuclei galaxies (AGNs), overlapped or blurred by active blackholes, occupied by dust. Their bright nature makes them detectable in spite of the dust surrounding them. However, during December 2022, astronomers found a new type of AGN that they called Little Red Dots, because they appear as tiny, fat red spots.

Connection of AGN with Quasars is Still a Mystery

For more than a decade, the study has been led by Dale Kocevski, an astronomer at Colby College. Their team includes scientists like Jorryt Matthee, an astrophysicist at the Institute of Science and Technology, who contributed to the understanding of little dots and their connection with quasars. Their connection is still a mystery that prompts them to find the objects with properties in between.

The Old Universe Abundantly Occupied by Hidden Quasars

In a new study Yoshiki Matsuoka, associate professor at the Research Center for Space, told Live Science, the scientists are surprised to find that the not-so-clear quasars had occupied a large portion of the early universe. Out of 13 galaxies, 9 were found to have clear signs of active supermassive blackholes in connection with the heavy dust that hides them.

Findings Can Give Insights into the Study of Universe Evolution

Jorryt Matthee, the head of the old research, said that although there are abundant new objects found in the universe, the gap between the two known populations found by JWST is too high, and thus, there is a possibility that these belong to that missing population lying in between the known ones, providing fresh insights into how these giants formed and evolved in the early universe. The findings were reported on May 7, 2025, in the preprint database arXiv.

Future Study Scopes to Unveil the Nature of LRD

The team is planning to observe 30 more objects from the sample of the Subaru Telescope. This can reveal that the behaviour of the hidden quasars aligns with Little Red Dots. Furthermore, the gases that surround them can reveal the mysterious nature of LRD.

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SpaceX Starship Flight 9 Reuses Booster, Gathers Key Data Despite Loss

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May 31, 2025

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SpaceX Starship Flight 9 Reuses Booster, Gathers Key Data Despite Loss

SpaceX launched its ninth Starship test flight on May 27 that featured the first-ever significant reuse of Starship hardware. As planned on Flight 9, Starship’s two stages separated successfully, and the upper stage even reached space. However, both were ultimately lost before completing their objectives. Despite these setbacks, the mission yielded valuable data which inspires SpaceX’s iterative approach to innovation as it aims to create a fully reusable launch system for space missions. This test flight exhibited successful reuse of a Super Heavy booster and aimed to demonstrate improved hardware performance.

Previous test flights

According to official site of SpaceX, Starship’s two stages are one giant booster called Super Heavy and a 171-foot-tall (52 meters) upper-stage spacecraft known as Starship, or simply “Ship.” Both are powered by SpaceX’s new Raptor engine — 33 of them for Super Heavy and six for Ship.

On Flight 7 and Flight 8 the Super Heavy performed flawlessly, acing its engine burn and then returning to Starbase for a catch by the launch tower’s “chopstick” arms. But Ship had problems: It exploded less than 10 minutes after launch on both missions, raining debris down on the Turks and Caicos Islands and The Bahamas, respectively.

Advancements in flight 9

In flight 9, SpaceX reused a Super Heavy booster for the first time, swapping out just four of its 33 Raptor engines after its initial flight in January. The booster also conducted a new atmospheric entry experiment, entering at a higher angle to collect data on aerodynamic control. Meanwhile, Ship (the upper stage) was tasked with deploying eight dummy Starlink satellites.

Despite the promising advances, Flight 9 encountered several failures. Super Heavy broke apart roughly six minutes after launch during its return burn, and Ship lost control due to a fuel tank leak. The upper stage began tumbling, which prevented a planned in-space engine relight and led to a destructive reentry over the Indian Ocean. Still, SpaceX gained critical data, particularly on tile performance and active cooling systems.

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7,100-Year-Old Skeleton Reveals Unknown Human Lineage in China

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May 31, 2025

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7,100-Year-Old Skeleton Reveals Unknown Human Lineage in China

A new study on a 7,100-year-old skeleton from China has revealed a “ghost” lineage that only existed in theories until now. Skeleton of the early Neolithic woman, known as Xingyi_EN, unearthed at the Xingyi archaeological site in southwestern China’s Yunnan province. Her DNA links her to a deeply divergent human population that may have contributed to the ancestry of modern Tibetans. This study also reveals a distinct Central Yunnan ancestry connected to early Austroasiatic-speaking groups. This discovery makes Yunnan as a key region to understand the ancient genetic history of East and Southeast Asia. The detailed analysis of 127 human genomes from southwestern China is published in a study in the journal Science.

According to the study, radiocarbon dating indicates Xingyi_EN lived around 7,100 years ago and isotope analysis suggests she lived as a hunter-gatherer. Genetic sequencing revealed her ancestry from a deeply diverged human lineage—now named the Basal Asian Xingyi lineage. This lineage diverged from other modern human groups over 40,000 years ago and remained isolated for thousands of years without mixing with other populations.

This “ghost” lineage does not match DNA from Neanderthals or Denisovans but appears to have later contributed to the ancestry of some modern Tibetans. Xingyi_EN represents the first physical evidence of this previously unknown population.

Yunnan’s significance as a reservoir of deep human diversity

Most of the skeletons that the researchers sampled were dated between 1,400 and 7,150 years ago and came from Yunnan province, which today has the highest ethnic and linguistic diversity in all of China.

“Ancient humans that lived in this region may be key to addressing several remaining questions on the prehistoric populations of East and Southeast Asia,” the researchers wrote in the study. Those unanswered questions include the origins of people who live on the Tibetan Plateau, as previous studies have shown that Tibetans have northern East Asian ancestry.

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