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Large asteroid to pass close to Earth on Wednesday

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On Wednesday evening (Feb. 15), a large space rock will come within 400 miles of Earth, but there is no need for concern.

According to EarthSky.org, the near-Earth asteroid 2005 YY128 will fly by our planet at a distance of 2.8 million miles (4.5 million km) at 7:46 p.m. EST on Wednesday (0046 GMT on February 16). This will be the closest it has been to us in more than 400 years.

However, analysts emphasise that there is little chance the asteroid will strike us on this approach because it is nearly 12 times farther away than the moon is from Earth.

The largest near-Earth asteroids (> 1 km diameter) could undermine human civilisation and perhaps lead to the extinction of the species, according to a report by the Swedish NGO Global Challenges Foundation.

As a result, researchers have a better understanding of the NEO population. For instance, more than 95% of the asteroids that are predicted to pass within 30 million miles (50 million km) of Earth at some point and are at least 0.6 miles (1 km) broad have been discovered by NASA and its collaborators. And none of them will likely represent a threat in the near future.

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Four people return to Earth in NASA’s SpaceX Crew-5 as it splashes down

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The SpaceX capsule, dubbed Endurance, splashed safely down in the Gulf of Mexico off the coast of Tampa, Florida, at 9:02 pm EST (7:32 am as per Indian standard time), returning two Nasa astronauts, one Japanese astronaut, and one Russian cosmonaut after 157 days in space.

On Saturday, the spaceship carrying the four men from NASA and SpaceX’s five-month Crew-5 mission splashed down off the coast of Florida. They had just returned safely from the International Space Station (ISS).

According to a Nasa blog post, the SpaceX spacecraft, called Endurance, safely descended into the Gulf of Mexico off the coast of Tampa, Florida, at 9:02 pm EST (7:32 am in India), returning two NASA astronauts, one Japanese astronaut, and one Russian cosmonaut after spending 157 days in space.

NASA’s SpaceX Crew-6 team, which also consists of four people—NASA astronauts Warren Hoburg and Stephen Bowen, UAE astronaut Sultan Alneyadi, and Roscosmos cosmonaut Andrey Fedyaev—will complete the mission.

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A few minutes before takeoff, SpaceX cancels the Crew-6 flight

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By the Science Desk of India Today: On Monday, four astronauts will be sent to the International Space Station by Elon Musk’s SpaceX. The four astronauts will go to the flying laboratory on the Crew Dragon spacecraft for a six-month mission.

In addition to Sultan Alneyadi of the United Arab Emirates and Andrey Fedyaev of the Russian space agency, Roscosmos, astronauts Stephen Bowen and Warren “Woody” Hoburg of NASA will spend six months doing research in the flying laboratory.

On Musk’s spaceship, a Russian astronaut is being sent into orbit for the second time, but this is the first time an Arab astronaut is participating in the trip.

The astronauts will participate in a number of human physiology experiments and technology advancements targeted at improving future space flight throughout their six-month stay. The experiments are intended to provide a better understanding of the body’s limitations during space travel.

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Deep radio surveys are used by astronomers to find “Elusive Dying Radio Galaxies”

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The finding will aid astronomers in their understanding of the variables governing the evolution of dying radio galaxies and in determining how much energy these fading sources replenish in their host galaxies and the intergalactic medium.

Pune: Using some of the most potent radio telescopes in the world, including the Giant Metrewave Radio Telescope (GMRT) in Khodad, Pune, a team of astronomers from the National Centre of Radio Astrophysics (NCRA), Tata Institute of Fundamental Research (TIFR), Physical Research Laboratory (PRL), Ahmedabad, and University of Oxford has discovered several “elusive dying radio galaxies.”

The finding will assist astronomers in understanding the parameters that control the evolution of dying radio galaxies and in estimating the energy that these sources contribute to their host galaxies and the intergalactic medium. The study emphasises the value of merging data from huge radio telescopes that operate in many frequency ranges. According to the researchers, their study will also act as a testing ground for research done in the future using the Square Kilometre Array (SKA) telescope, the largest radio interferometric array telescope that will be constructed by an international partnership that includes India.

Wadadekar stated, “Researchers employed deep multi-frequency radio surveys carried out with the GMRT in India, the low frequency array (LOFAR) telescope in the Netherlands, and the very large array (VLA) in the United States to detect fading radio galaxies. They were able to recognise almost two dozen radio galaxies that displayed relic emission from lobes without AGN activity by examining the pictures and spectra of a large number of radio galaxies. The XMM-Newton Large Scale Structure (XMM-LSS) extragalactic field searched a 12-square-degree area of the sky for these fading galaxies.

Contrary to earlier studies, sensitive observations allowed researchers to uncover a far larger density of leftover sources than anticipated. They were able to locate host galaxies and large-scale environments where residual sources are found thanks to the 8.5m Subaru telescope’s extensive optical survey, Wadadekar added.

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