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Astronomers have detected the longest black hole-driven jet observed in the early universe, stretching at least 200,000 light-years—twice the width of the Milky Way. The discovery was made in a quasar identified as J1601+3102, which existed when the universe was only 1.2 billion years old. Despite the immense size of its jet, the supermassive black hole at the heart of this quasar is not among the most massive, with a mass of 450 million times that of the Sun.

Observations from Multiple Telescopes

According to research published in The Astrophysical Journal Letters, the jet was first identified using the Low-Frequency ARray (LOFAR) Telescope, a network of radio telescopes spanning Europe. Additional observations were conducted using the Gemini Near-Infrared Spectrograph (GNIRS) and the Hobby Eberly Telescope. Scientists have been investigating quasars with strong radio jets to better understand their formation and their role in galactic evolution.

As reported by space.com, Anniek Gloudemans, a researcher at NOIRLab and the study’s lead author, saidthat the findings suggest exceptionally massive black holes or high accretion rates are not always required to generate powerful jets in the early universe.

Unusual Jet Structure

The research revealed that the two jets emitted from J1601+3102 are not symmetrical. One is shorter and fainter than the other, indicating that environmental factors may be influencing their development. Differences in brightness and length suggest that interactions with surrounding matter could be affecting the jet’s expansion.

Frits Sweijen, an astronomer at Durham University and part of the research team, said that initial expectations were that the southern jet would be much smaller and possibly unrelated. Observations from LOFAR, however, revealed intricate radio structures extending over vast distances.

Significance of the Discovery

This discovery sheds light on how black holes and their jets influenced early galactic evolution. While supermassive black holes are found at the center of most galaxies, only some power quasars with visible jets. The detection of such an immense structure in the early universe demonstrates the effectiveness of combining data from telescopes operating at different wavelengths. Scientists now aim to determine the quasar’s accretion rate to gain further insights into how these cosmic giants interact with their surroundings.

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NASA, General Atomics Test Nuclear Fuel for Faster Mars Missions

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NASA, General Atomics Test Nuclear Fuel for Faster Mars Missions

Efforts to develop nuclear thermal propulsion (NTP) for future space missions have taken a significant step forward. General Atomics Electromagnetic Systems (GA-EMS), in collaboration with NASA, has conducted tests on nuclear reactor fuel designed for space travel. The trials, held at NASA’s Marshall Space Flight Center in Alabama, assessed the fuel’s ability to withstand extreme conditions that would be encountered during deep space missions. The successful results could accelerate plans for faster, more efficient space travel, reducing transit times for crewed missions to Mars.

Successful Testing at NASA’s Marshall Space Flight Center

As reported by space.com, according to the tests conducted at NASA’s facility, the reactor fuel was subjected to six thermal cycles using hot hydrogen, rapidly heating it to 2326.6 degree Celsius. The objective was to evaluate the fuel’s resilience under extreme temperature fluctuations and exposure to hot hydrogen gas, conditions necessary for nuclear thermal propulsion. GA-EMS President Scott Forney stated in a company release that the fuel demonstrated the ability to endure these conditions, reinforcing confidence in its potential for safe and reliable space propulsion.

First-of-Its-Kind Testing of Nuclear Fuel

GA-EMS Vice President of Nuclear Technologies and Materials, Christina Back, highlighted the uniqueness of these tests in the company release. The company was reported to be the first to utilise the compact fuel element environmental test (CFEET) facility at NASA’s Marshall Space Flight Center for such trials. Fuel performance was tested at temperatures reaching 2,727 degree Celsius, with findings indicating a significant efficiency boost over conventional propulsion systems.

Potential Impact on Space Exploration

As per sources, NASA has prioritised the development of nuclear propulsion due to its potential to significantly reduce travel time to Mars. Shorter missions could lower the risks associated with long-duration spaceflight, including radiation exposure and the need for extensive life-support resources. In 2023, NASA and the Defense Advanced Research Projects Agency (DARPA) announced joint efforts to develop an NTP system, with a planned demonstration by 2027. The latest advancements in nuclear propulsion technology could play a crucial role in achieving that goal, bringing human missions to Mars closer to reality.

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ISRO Successfully Conducts CE20 Cryogenic Engine Vacuum Test for LVM-3

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ISRO Successfully Conducts CE20 Cryogenic Engine Vacuum Test for LVM-3

A key milestone in India’s space technology development has been reached with the successful vacuum ignition test of the CE20 cryogenic engine. Conducted on February 7 at the Indian Space Research Organisation’s (ISRO) Propulsion Complex in Mahendragiri, Tamil Nadu, the test simulated real space conditions for engine restart. The CE20 engine, designed for the upper stage of the LVM-3 rocket, is a critical component of future ISRO missions, including the human spaceflight programme. The test focused on evaluating the ignition process under vacuum conditions, ensuring operational reliability in space.

Engine restart capabilities under evaluation

As reported by The Times Of India, according to ISRO, the vacuum test assessed the ignition of the engine’s thrust chamber using a multi-element igniter while maintaining the required tank pressure for restart. The CE20 engine has been developed by ISRO’s Liquid Propulsion Systems Centre (LPSC) and has already demonstrated thrust levels ranging from 19 to 22 tonnes with a single-start capability. The latest trials are aimed at enabling multiple restarts, a feature that enhances mission flexibility.

Alternative turbopump initiation under consideration

ISRO is examining the possibility of using a bootstrap mode for turbopump initiation, replacing conventional stored gas systems. This approach, if successfully implemented, could improve engine restart efficiency. Previous ground-based trials of the CE20 engine have been completed, and this latest vacuum test marks another step toward full qualification for advanced missions.

Significance for the Gaganyaan mission

With the CE20 engine cleared for use in India’s maiden human spaceflight mission, Gaganyaan, these tests are crucial to validating performance under real conditions. ISRO has emphasised that both the engine and testing facility performed as expected during the trial, reinforcing confidence in the system’s reliability for upcoming space missions.

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Romania’s ‘Living’ Rocks Expand and Multiply in a Strange Natural Process



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Romania’s ‘Living’ Rocks Expand and Multiply in a Strange Natural Process

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Romania’s ‘Living’ Rocks Expand and Multiply in a Strange Natural Process

A cluster of unusual geological formations known as trovants has been drawing attention in Romania. These rock-like structures, which appear to grow and even reproduce, are primarily found near the village of Costești in central Romania. Trovants, which resemble smooth, bulbous stones, are unique in their ability to absorb minerals from rainwater, allowing them to expand over time. Myths and folklore surrounding these formations have led to comparisons with dinosaur eggs, alien artifacts, and plant fossils. Despite their peculiar nature, geologists have identified trovants as a natural geological phenomenon resulting from specific mineral and environmental conditions.

Scientific Explanation Behind Trovants

According to reports from geological studies published by Geology In, trovants consist of a hard stone core encased in a porous sandstone shell. This shell absorbs rainwater rich in minerals like calcium carbonate, which, when combined with other elements, forms a cement-like substance that gradually increases the rock’s size. This process is believed to add approximately 5 centimeters to a trovant’s circumference every 1,000 years. Over time, lumps can form on the surface, eventually detaching and growing into separate trovants. This unique characteristic has contributed to their reputation as “living” rocks.

Origins and Geological Theories

The formation of trovants has been linked to seismic activity that took place more than 5 million years ago. As per geological sources cited by BBC Science Focus, ancient earthquake activity may have compacted sedimentary deposits in an aquatic environment, leading to the creation of these spherical structures. The presence of fossils such as bivalves and gastropods within the trovants further supports this theory. Although similar formations have been observed in Russia, Turkey, and the U.S., Romania remains home to the most well-known trovant deposits.

Cultural Significance and Myths

Folklore surrounding trovants has long fueled theories beyond scientific explanations. Some local myths suggest that the formations are remnants of ancient creatures, while others attribute their origin to extraterrestrial influences. The unusual ability of trovants to expand and multiply has contributed to their enigmatic status. Despite the myths, experts maintain that trovants are entirely natural geological formations shaped by environmental processes over millions of years.

Conservation and Public Interest

The Trovants Museum Natural Reserve was established to protect and study these rare formations. Located near Costești, the reserve aims to preserve the trovants while educating visitors about their geological significance. The site continues to attract tourists, researchers, and enthusiasts fascinated by these mysterious stones. While trovants remain a subject of intrigue, scientific findings confirm that their growth and multiplication are the results of natural geological processes rather than supernatural or extraterrestrial phenomena.

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