Connect with us

Published

1 month ago

on

Distant supermassive black holes, far larger than expected, have been detected in the early universe. Observations using the James Webb Space Telescope (JWST) indicate that these black holes hold a mass nearly 10 percent of their host galaxy’s stellar mass, a stark contrast to the 0.01 percent ratio observed in modern galaxies. This anomaly has raised new questions regarding the rapid formation and growth of black holes in the early stages of cosmic history.

Research Findings on Black Hole Growth

According to the study published in the paper repository arXiv, a team led by Jorryt Matthee, a scientist at the Institute of Science and Technology Austria (ISTA), analysed data from JWST. The findings suggest that some early galaxies, identified as “little red dot” galaxies, contain supermassive black holes with masses nearly 1,000 times higher than previously estimated norms. These galaxies, observed from a time when the universe was around 1.5 billion years old, exhibit an unusual balance between stellar mass and black hole mass, challenging existing growth models.

Implications for Early Universe Cosmology

As per reports, these small galaxies exhibit a red hue due to the presence of an accretion disk surrounding the black holes. The intense gravitational pull allows for rapid matter consumption, potentially accelerating black hole expansion beyond current theoretical expectations. The study indicates that the density of surrounding gas in the early universe may have facilitated this extraordinary growth. Matthee stated to Space.com that these findings provide a promising avenue for further understanding black hole evolution.

Further Observations Needed

Researchers emphasise the need for additional studies to confirm whether measurement errors or selection bias contributed to these unexpected results. Ongoing observations with JWST aim to refine the understanding of early black hole formation, shedding light on whether these supermassive black holes were nurtured by dense galactic environments or formed through alternative mechanisms, such as direct gas collapse. The findings suggest that black holes and star formation are more interconnected than previously thought, prompting a reassessment of cosmic evolution models.

Related Topics:
Continue Reading

Science

NASA’s MMS Mission Marks 10 Years of Magnetic Reconnection Discoveries

Published

2 hours ago

on

March 17, 2025

By

NASA's MMS Mission Marks 10 Years of Magnetic Reconnection Discoveries

A decade after its launch on March 12, 2015, NASA’s Magnetospheric Multiscale (MMS) mission has significantly advanced the understanding of magnetic reconnection, a fundamental process occurring throughout the universe. Magnetic reconnection takes place when magnetic field lines break and realign, releasing massive amounts of energy. Around Earth, a single event can generate as much energy in hours as the United States consumes in a day. Thousands of research papers based on MMS data have contributed to scientific and technological advancements, including a better understanding of space weather’s effects on Earth and potential applications for fusion energy research.

Observations in a Unique Space Environment

According to reports magnetic reconnection was previously understood in a limited capacity. The MMS spacecraft, using advanced measurement instruments, has provided insights into this phenomenon. The four identical spacecraft move in a highly elliptical orbit, enabling them to study reconnection events in key locations—both on the Sun-facing side of Earth and on the nightside, farther from the Sun. According to a statement, in an official press release by NASA, Jim Burch, Principal Investigator for MMS at Southwest Research Institute, noted that MMS has corrected previous theories about reconnection in turbulent regions and revealed its occurrence in unexpected locations.

Enabling Scientific and Career Breakthroughs

Reports indicate that the MMS mission has played a crucial role in fostering the careers of early-stage researchers. Nearly 50 doctorate degrees have been completed using its data, and early-career scientists have been supported through dedicated grants and training programs. These initiatives have been so effective that they are now a requirement for all NASA heliophysics missions, as confirmed by Guan Le, MMS Mission Lead at NASA’s Goddard Space Flight Center.

Record-Setting Achievements in Space

Beyond scientific contributions, MMS has set multiple records. The mission holds the Guinness World Record for the highest GPS fix at 116,300 miles above Earth, demonstrating the feasibility of GPS navigation for deep space missions, including NASA’s Artemis programme. Another record was set for the smallest satellite formation, with spacecraft maintaining just 2.6 miles of separation. Despite a decade in space, the mission remains operational, with enough fuel to continue for years.

Looking Ahead

Scientists remain focused on leveraging MMS for further discoveries. With upcoming years presenting ideal conditions for studying reconnection events on Earth’s nightside, ongoing observations are expected to refine existing theories and uncover new aspects of this powerful space phenomenon.

Continue Reading

Science

Ancient Europeans Retained Dark Skin, Hair and Eyes Until the Iron Age

Published

2 hours ago

on

March 17, 2025

By

Ancient Europeans Retained Dark Skin, Hair and Eyes Until the Iron Age

Most early Europeans retained dark skin, hair, and eyes until approximately 3,000 years ago, as suggested by recent genetic research. Findings indicate that lighter features only became common in Europe during the Iron Age. Although the genetic markers for lighter pigmentation first appeared around 14,000 years ago, they remained relatively rare for thousands of years. Scientists suggest that lighter skin may have provided an advantage by aiding vitamin D production in regions with lower sunlight exposure. The research was conducted through an extensive analysis of ancient DNA samples from archaeological sites across Europe and parts of Asia.

Pigmentation Variations Over Time

According to a study published on the preprint server bioRxiv, genetic material from 348 ancient individuals was examined, with samples dating back as far as 45,000 years. The oldest belonged to the Ust’-Ishim individual from western Siberia, discovered in 2008, while another well-preserved genome came from the SF12 individual, who lived in Sweden around 9,000 years ago. Despite degradation in many samples, scientists utilised probabilistic phenotype inference and the HIrisPlex-S system to reconstruct pigmentation patterns.

Silvia Ghirotto, a geneticist at the University of Ferrara and the study’s senior author, stated in an email to Live Science that while lighter skin, hair, and eyes emerged sporadically in individuals over time, dark pigmentation remained dominant in parts of Europe well into the Copper Age. Some regions continued to see frequent occurrences of darker traits until the Iron Age.

Emergence of Lighter Features

The study found that lighter eye colours first appeared between 14,000 and 4,000 years ago, primarily in Northern and Western Europe. However, individuals with dark skin and dark hair still remained prevalent during that period. The genes responsible for lighter skin emerged in Sweden around the same time but remained rare initially.

Carles Lalueza-Fox, a palaeogeneticist at Barcelona’s Institute of Evolutionary Biology, who was not involved in the study, expressed surprise at the findings. He told Live Science that the persistence of darker pigmentation in some individuals until the Iron Age was unexpected. While the study maps out the emergence of these genetic traits, the reasons for their eventual dominance remain uncertain.

For the latest tech news and reviews, follow Gadgets 360 on X, Facebook, WhatsApp, Threads and Google News. For the latest videos on gadgets and tech, subscribe to our YouTube channel. If you want to know everything about top influencers, follow our in-house Who’sThat360 on Instagram and YouTube.


Samsung Galaxy F16 5G Price in India Revealed: Offers, Availability Details



Infinix Note 50X 5G Said to Feature MediaTek’s Dimensity 7300 Ultimate Chipset

Continue Reading

Science

SpaceX Crew-10 Launches to ISS, Relieving Stranded NASA Starliner Crew

Published

1 day ago

on

March 16, 2025

By

SpaceX has launched the Crew-10 mission from NASA’s Kennedy Space Center, sending four astronauts to the ISS. The team will replace Crew-9 members, two of whom have been stranded since June due to Boeing’s Starliner delays. The Falcon 9 rocket lifted off successfully on March 14, and Crew-10 is expected to dock with the ISS in about 28 hours. The six-month mission…

Continue Reading

Trending