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PSLV-C58 XPoSat: India launches satellite to study black holes from Sriharikota

On January 1, the PSLV-C58 rocket took off at 9.10 a.m. from this spaceport’s first launch pad, which is situated around 135 kilometres east of Chennai.

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The Indian Space Research Organisation successfully launched India’s first X-Ray Polarimeter Satellite on Monday, or XPoSat, from the Satish Dhawan Space Centre in Sriharikota. The satellite is designed to provide information about celestial objects such as black holes. It was carried into space by a Polar Satellite Launch Vehicle rocket.

According to the ISRO, the PSLV-C58 rocket successfully launched payload XPoSat into Low Earth Orbit on its 60th flight.

On January 1, the PSLV-C58 rocket took off at 9.10 a.m. from this spaceport’s first launch pad, which is situated around 135 kilometres east of Chennai.

It is the first specifically designed ISRO scientific satellite to conduct studies on polarisation measurements of X-ray radiation from astronomical sources from space.

Aeronautics and Space Agency (NASA) studied supernova explosion remnants, black hole particle streams, and other cosmic occurrences in December 2021 with the Imaging X-Ray Polarimetry Explorer mission.

Although India has established space-based X-ray astronomy with an emphasis on imaging and time domain investigations, the space agency stated that Monday’s mission represents a significant contribution to the scientific community.

In order to conduct long-term spectral and temporal investigations of cosmic X-ray sources, the PSLV-C58 mission aims to measure the polarisation of X-rays in the energy band 8-30 keV emitted by about 50 possible cosmic sources.

When analysing the radiation process and geometry of astronomical sources, X-ray polarisation is an essential diagnostic tool. POLIX (Polarimeter Instrument in X-Rays), developed by the Raman Research Institute to determine polarimetry parameters, and XSPECT (X-ray Spectroscopy and Timing), constructed by the U R Rao Satellite Centre, Bengaluru, are the main payloads of XPoSat.

With the launch of its first X-Ray Polarimeter satellite, the ISRO ushered in the new year. Following the success of the Gaganyaan Test Vehicle D1 mission in October, the launch occurred.

India achieved unprecedented achievement in 2023 with the gentle landing of Chandrayaan-3 on the Moon’s south pole and the launch of Aditya-L1, the country’s first solar mission.

Following the momentous August 23 landing of Vikram Lander on the Moon, the Pragyan rover was sent out to explore the lunar south pole, which had not before been explored.

India’s current objectives include the Gaganyaan Mission, establishing Bharatiya Antariksha Station by 2035, and sending the country’s first person to the moon by 2040.

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3 dead, 9 hospitalised after gas leak at fertiliser plant in Maharashtra

According to police, the explosion released toxic chemical fumes.

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Three individuals, including two women, lost their lives and nine others were hospitalised following a gas leak caused by an explosion in a reactor at a fertiliser plant in Maharashtra’s Sangli district, an official said on Friday.

The incident occurred at approximately 6:30 PM on Thursday at the Myanmar Chemical Company, located in Shalgaon MIDC within Kadegaon tehsil.

Sangli Superintendent of Police Sandip Ghuge stated that the gas is suspected to be ammonia.

According to police, the explosion released toxic chemical fumes. “Approximately 12 people in the facility were affected and subsequently taken to the hospital. Tragically, two female workers and a security guard have died, while nine others are currently receiving treatment,” stated Sangram Shewale, Senior Inspector at Kadegaon police station.

Seven of the injured individuals have been admitted to Sahyadri Hospital in Karad, with five of them in critical condition in the ICU.

The deceased women have been identified as Suchita Uthale (50) from Yetgaon in Sangli district and Neelam Rethrekar (26) from Masur in Satara district, PTI reported.

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Ahead of Delhi Elections, Arvind Kejriwal launches Revdi Par Charcha campaign to seek feedback on freebies

Arvind Kejriwal said 65,000 meetings will be held across Delhi at micro levels by the AAP leaders and workers.

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Ahead of Delhi Elections, Arvind Kejriwal launches Revdi Par Charcha campaign to seek feedback on freebies

The Aam Aadmi Party (AAP) on Friday launched a campaign with a tagline Revdi Par Charcha to seek public feedback on freebies. The campaign comes ahead of the assembly elections, which is scheduled to be held in February.

Former Chief Minister and AAP national convenor Arvind Kejriwal launched the campaign with his colleagues at the party office, saying while the opposition calls freebies as revdi, the party calls it services. This campaign will start on November 25 and will continue for 15 days until December 10, discussing the issues with common man.

Notably, the opposition has been targeting the AAP for providing free electricity, water and free public buses for women among other facilities. However, AAP feels freebies help citizens live a life of dignity.

Gopal Rai, AAP’s Delhi unit chief, said that so far, politicians used to enjoy the facilities, while citizens paid taxes. He continued that Arvind Kejriwal’s government decided that the people should also get the facilities like the politicians, adding the BJP called their attempt revdis. He said that AAP is launching the ‘Revdi Par Charcha’ campaign to discuss with the people in the city if the government should provide the facilities or not.

Launching the campaign, Arvind Kejriwal said 65,000 meetings will be held across Delhi at micro levels by the AAP leaders and workers. He said that AAP has six revdis for the people of Delhi. Mentioning that the Prime Minister and BJP have said several times that Kejriwal is providing freebies to the people that should be stopped, the former Chief Minister said that now people will now tell them if they want these six freebies.  He further concluded that if the BJP is elected here, they will stop these services immediately.

While listing the six services, the AAP national convenor said that Delhi is getting free electricity round the clock. He added that there was a time when Delhi used to see power cuts for 8-10 hours, but AAP ensured that the situation changed. He also noted that his party is providing free water, free pilgrimage to senior citizens, free bus rides to women, free world-class education and free medicine and treatments. Additionally, the pamphlet launched by Arvind Kejriwal also listed that soon the women in Delhi will get Rs 1,000 per month as well, later termed as the seventh revdi by the former Chief Minister.

Reports said that the paper will be circulated across the national capital. The paper also reads that if the reader feels they are getting huge water bills, they should not pay it. It mentioned that AAP will waive all water bills once Arvind Kejriwal is re-elected.

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Rahul Gandhi says air pollution in North India a national emergency, tourism declining, global reputation crumbling

“We need a collective national response, not political blame games,” the Congress leader said on his X handle.

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Leader of Opposition in the Lok Sabha Rahul Gandhi on Friday said the air pollution in North India is a national emergency that needs a collective national response and not a political blame game. The Congress leader added that due to air pollution tourism is declining and “our global reputation is crumbling”.

It is a public health crisis that is stealing children’s future and suffocating the elderly, Gandhi said, adding an environmental and economic disaster that is ruining countless lives.

“As Parliament meets in a few days, MPs will all be reminded of the crisis by our irritated eyes and sore throats. It is our responsibility to come together and discuss how India can end this crisis once and for all,” the Leader of the Opposition in Lok Sabha said.

The former Congress chief said the poorest “among us suffer the most”, unable to escape the toxic air surrounding them. Families are gasping for clean air, children are falling sick, and millions of lives are being cut short, he added.

The Rae Bareli MP noted that the pollution cloud covers hundreds of kilometres. He said cleaning it up will require major changes and decisive action from governments, companies, experts, and citizens.

“We need a collective national response, not political blame games,” the Congress leader said on his X handle.

Gandhi also shared a video on a social media platform where he discussed the capital’s air pollution with environmentalist expert Vimalendu Jha. In the video, the Congress leader said he has been facing eye-burning and breathing issues and how the last week in Delhi has been terrible.

He said, “I tell my mother to leave town this month.” Jha explains to Gandhi that the sources of air pollution in Delhi are episodic and perennial. Episodic sources are firecrackers and stubble burning, which affect the month of November. “Vehicular contributes 50 per cent of Delhi’s pollution and construction-related roadside dust is another 30 per cent,” Jha said.

The Air Quality Index in Delhi has been severe since November 16, making it five consecutive days till Wednesday. On November 15, the average AQI was 396 (very poor).

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