Mysterious Planet Nine May Still Lurk in the Outer Solar System
The concept of a large, hidden planet or planets lurking in the most distant regions of our solar system has been known since before Pluto’s discovery on 1930s. Originally named “Planet X,” it had been proposed to account for irregularities in Uranus’s orbit. That mystery was eventually resolved by recalculating Neptune’s mass. But in 2016, Caltech astronomers Konstantin Batygin and Mike Brown resurrected the puzzle with a new idea — Planet Nine — which was based on the bizarre orbits of distant Kuiper Belt objects. The explanation is that a huge planet far away is gravitationally pulling on these objects.
The Case for Planet Nine
According to Batygin and Brown’s observation, many of the Kuiper Belt objects don’t travel on orbits as expected. This suggests that, like the Moon (whose outward spiral from Earth is due to earth’s gravity), these distant objects are somehow being perturbed by something other than our Sun. The hypothesised Planet Nine is believed to be several times the size of Earth and orbiting out beyond Neptune. Supporting evidence are the discovery of recently detected trans-Neptunian-object with elliptical-orbits (such as 2017 OF201 ) which could have been sculpted by a massive planet.
In 2024, Brown reaffirmed confidence in the theory, stating, “There are currently no other explanations for the effects that we see.” More trans-Neptunian discoveries keep pointing toward an unknown gravitational force.
Challenges and New Clues
However, the theory faces hurdles. Other astronomers contend that there is not enough data on the Kuiper Belt to warrant a Planet Nine. Others suggest alternative explanations, such as a debris ring or even something more exotic like a small black hole. One is reduced observing time; tens of thousands of years are required for these objects so far from our planet to orbit.
Recent finds, such as the sednoid 2023 KQ14 — so elongated that it looks stable in an empty solar system — complicate the scenario even more. If Planet Nine is out there, it could be at least 500 AU away from the Sun. In the meantime, astronomers are continuing to search those huge, remote edges of our solar system using ground- and space-based telescopes.
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In a major fillip to Pakistan’s space and disaster management applications, China Thursday launched the first ever Remote Sensing Satellite-1 (PRSS-01) exclusively for Pakistan. The satellite was carried into orbit on a Kuaizhou-1A rocket from the Xichang Satellite Launch Centre in Sichuan province. PRSS-01 was injected into the intended orbit after liftoff, and all systems were declared functioning properly. The satellite will be used to support agriculture and land surveys, urban planning, emergency disaster response, as well as environmental monitoring scans for the country, and marks a new beginning in Pakistan’s ambitions of a space program. It also highlights persistent cooperation between China and Pakistan in technology associated with space science, as well as earth observation.
Earth Observation and Disaster Management
According to the official website, PRSS-01 is equipped with high-resolution imaging systems capable of providing detailed data across a wide range of civilian and governmental uses. Its uses consist of national land survey, urban planning, and real-time environmental monitoring. Crucially, it increases Pakistan’s ability to respond rapidly and efficiently when natural disasters such as floods or earthquakes occur. It is anticipated that the technology will be valuable in long-term infrastructure planning and will promote smarter, sustainable development across the country.
Strengthening Bilateral Space Cooperation
The PRSS-01 launch indicates that the strategic cooperation between China and Pakistan is deepening, in aerospace technology as well. Engineers from the two countries worked closely together throughout the development and launch processes, including substantial technological support from China. The mission will continue the spirit of collaboration evident in satellite communications and scientific payloads between China, Pakistan, and Algeria, strengthening confidence among partners.
The successful launch of PRSS-01 is not only a great leap for Pakistan in promoting national development, but also an important step towards China’s deepening cooperation with countries along the Belt & Road Initiative (BRI) and its aerospace industry transforming from being big to strong. With the launch of PRSS-01, industry expects a new era in improved satellite services for Pakistan.
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In a groundbreaking experiment, gold has defied the expectations that it was still solid even after being heated above the standard temperature. With the help of rapid laser bursts, the scientists could superheat gold beyond the entropy catastrophe, which is a theoretical boundary at which solids need to melt due to extreme heat. To the surprise, the gold was in the structure temporarily, and then it led to the rethinking of how matter behaves when provided with intense conditions. Such a rare phenomenon is known as superheating, where the heating happens so fast that atoms don’t get enough time to reorganise themselves into a liquid.
Gold Withstands the Entropy Catastrophe: What Is Superheating?
As per Science Alert, the atomic structure of gold resisted melting and absorbed the heat quickly, even faster than the response of its atoms. Scientists performed this study at 19,000 Kelvin, and gold remained solid for 2 picoseconds, which is enough to challenge the theory of physics.
Conventionally, the physicist believed that solids could not survive heat more than three times their melting point. This experiment, although pushed gold to 14 times the threshold, with the help of advanced techniques, which involved X-ray reflections to track the heat absorption accurately. The findings suggest that the materials can resist melting beyond the previously known boundaries; however, only for brief moments, which are difficult to even imagine.
Could Other Solids Resist Melting Like Gold? What This Means for Future Research
The results found by the scientists don’t change the law of thermodynamics. However, they suggest that such laws cannot be completely applied in ultra-fast reactions, and atoms cannot move or rearrange in this much time. Most importantly, gold had no place to go, and this let it remain solid even after heating to unexpected temperatures.
This unlocks the new possibilities fr understanding the extreme situations, from the impact of asteroids to the nuclear reactors. Scientists now wonder if other solids could also show the same tolerance, and rule out the current model of melting points, which need to be known altogether. Science must revisit the question asked by one scientist that how hot can you make something before melting?
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