#universe_exploration

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The problem arose when one of the three gyroscopes gave incorrect readings. The team is working to fix the problem, but for now all scientific missions are suspended NASA has suspended all current science missions of the Hubble telescope due to a gyroscope malfunction. The problem arose on November 19, when the telescope went into safe mode after one of its three gyroscopes gave erroneous readings. The team quickly resumed work after fixing the problem, but the unstable gyroscope attracted attention twice, causing the telescope to go into safe mode again on November 21 and 23. After the incident on November 21, the agency was able to restore operations. However, on November 23, the telescope went into safe mode again, prompting NASA to suspend all science missions until the cause was determined. [caption id="attachment_85327" align="aligncenter" width="780"] Hubble Telescope[/caption] Hubble Telescope temporarily suspends science missions due to faulty gyroscope Gyroscopes are important components of the Hubble Telescope, helping to measure its rotation speed and determine its direction. The NASA team is actively working to determine the cause of the gyroscope malfunction. The gyroscopes were last replaced during the shuttle's fifth and final executive mission in 2009. Six gyros were replaced as part of this mission, and the faulty gyro is one of three that are still operational. Despite the need for another service mission, NASA believes Hubble will continue to make breakthrough discoveries with the James Webb Telescope for the rest of this decade, and possibly well into the next. The space agency has not released details about when it hopes to return Hubble to service once the gyroscope problem is fixed. Even if you need to turn off the faulty gyroscope, the telescope will be able to continue working, since NASA claims that for Hubble to continue moving and participate in scientific missions, one working gyroscope is enough. Hubble launched in 1990 and spent 33 years exploring our Universe, giving us iconic views of the cosmos, including a spectacular view of the Creation Pillars, which was also photographed by astrophotographers and the James Webb Telescope.

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The world you live in. Credit: universe_explorer

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Neuschwanstein Castle—Schwangau, Germany [OC] [3024x4032] Check this blog!

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📷: universe_explorer

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Neuschwanstein Castle—Schwangau, Germany [OC] [3024x4032] by universe_explorer

[phonemantra-blog]

The Historic Encounter with an Alien Artifact On January 8, 2014, a celestial visitor made history by crash-landing in the Pacific Ocean. This remarkable interstellar meteor, known as IM1, was the first confirmed encounter with an alien artifact. Join us as we delve into this extraordinary discovery and its implications for our understanding of the universe. IM1's Extraordinary Journey Through Space IM1's journey through the cosmos was nothing short of astonishing. It entered our solar system at an incredible speed, outpacing the majority of nearby stars. Learn more about the remarkable voyage of IM1 and how it withstood a high-velocity impact. [caption id="attachment_52457" align="aligncenter" width="690"] Earth’s First Confirmed Encounter With An Alien Artifact[/caption] Analyzing the Alien Composition of IM1 Discover what makes IM1 truly unique as an extraterrestrial artifact. Explore the composition pattern known as BeLaU and the findings of extensive scientific analyses conducted by renowned laboratories. Understand how IM1's composition sets it apart from anything within our solar system. FAQs about Earth’s First Confirmed Encounter With An Alien Artifact Q1: How did scientists confirm IM1's interstellar origin? A1: Scientists confirmed IM1's interstellar origin through extensive analyses, including iron isotope ratios and deviations from typical solar system compositions. Q2: What is the significance of IM1's composition pattern, BeLaU? A2: BeLaU is a unique composition pattern characterized by a significant enrichment in Beryllium, Lanthanum, and Uranium, setting IM1 apart as an alien object. Q3: Why is IM1's discovery considered a watershed moment in our understanding of the cosmos? A3: IM1 represents the first known sample from beyond our solar system, offering unprecedented insights into the vast and complex universe. Q4: How has Dr. Avi Loeb and his team contributed to our understanding of the universe? A4: Dr. Avi Loeb and his team have taken humanity one step closer to unraveling the secrets of the universe through their groundbreaking study of IM1.  

[phonemantra-blog]

The study proposes an approach to observe and study the photon ring around black holes, which could reveal a lot of information about them. For this purpose, it is proposed to place an array of space radio interferometers with an ultra-long base at the Lagrange point L2 Understanding the physics of supermassive black holes comes from studying data from their accretion disks and the jets they eject, as well as observations of objects such as M87* and Sag A*. However, scientists have still not been able to capture the photon ring around the black hole. A new study offers a new approach to this task. Black holes are structures in space and time that bend them. The event horizon of a black hole is a surface through which light can only pass once: anything that passes through the horizon remains inside the black hole. In addition, next to the black hole, there is a photon shell, which represents the inner limit of stable circular orbits of photons. This limit is located at a distance of 1.5 event horizon radii. [caption id="attachment_64832" align="aligncenter" width="780"] Astronomers[/caption] The event horizon and the photon envelope cannot be observed directly, but it is possible to detect their closest equivalent - the photon ring, which is formed when photons make several half-turns around a black hole, and their paths bend towards the observer. For an ordinary black hole, the radius of the photon ring is about 2.6 times the radius of the event horizon. In the case of a rotating black hole, the radius of the photon ring may differ, since rotation increases the energy of the photons in the direction of rotation. The photon ring is the closest black hole structure to us, and its observation can provide a lot of information about black holes and Einstein's theory of gravity. Astronomers have proposed a way to observe the photon ring of a black hole So far, the photon ring of the M87* black hole has been recognized in data obtained with the Event Horizon Telescope (EHT), but with low resolution. Current resolution capabilities have reached their limit; astronomers are unable to isolate the photon ring from the background with greater clarity. So in a new study, astrophysicists proposed using a space-based Very Long Baseline Interferometer (VLBI) array to obtain high-resolution images of the M87* photon ring and other supermassive black holes, such as the one in the Andromeda galaxy (M31). To do this, scientists proposed placing radiation receivers in orbit around the Earth at the Lagrange point L2. Such a telescope would be able to obtain data with a field of view larger than the diameter of the Earth. This research is conceptual, and the implementation of such a telescope will require significant effort and time. However, the ideas expressed in this work are worthy of attention, since the photon ring is the main target of astronomical research on black holes. The ability to observe and study photon rings will help overcome current limitations and advance our understanding of black hole physics and gravity.