Two habitable planets that could support life discovered

Agencies
June 19, 2019

Two exoplanets that have been discovered, which are warm similar to Earth and may have water, could be alternatives to support life, according to a study on Tuesday.

Scientists have been searching for planets close to nearby stars since 2016 using a 3.5-meter telescope.

Images captured at the Calar Alto Observatory in Almeria, southern Spain, and two other Spanish telescopes allowed researchers to analyse, in great detail, the Teegarden star—a cold red dwarf only around 12.5 light years away from our solar system, Efe news reported.

"Teegarden only has eight per cent of our sun's mass," said Ignasi Ribas, co-author of the study. "It is much smaller and much less brighter than the Sun. In fact, despite being very close to the Earth it was not discovered until 2003," Ribas said.

The temperature of the star is around 2,600C (the Sun's temperature is 5,500C) and because it is 10 times smaller, it's 1,500 times weaker and radiates mostly infrared waves.

Once the star was found, scientists used the Doppler technique, also known as the wobble method, which uses radial-velocity measurements of the parent star to detect planets around it.

The Doppler technique detected at least two signals, which have now been identified as planets Teegarden b and Teegarden c.

Teegarden b has the mass similar to Earth and orbits the star every 4.9 days. The second planet takes 11.4 days to complete the orbit, which is the length of its year.

"In other words, they are much closer to their (parent) star than the Earth is to the Sun," Ribas said.

"Teegarden, the more internal one, receives 10 per cent more light than we do from the Sun, that's why we think it may be too hot and may not have water. But this is just speculation because there are elements of its climate that we don't know and that could mean there could be liquid water," he continued.

Teegarden hovers in the midst of a habitable zone, which means the temperature on its surface is between 0 degree Celsius and 100 degree Celsius, meaning it could very well have water on surface.

What scientists are excited about is that both exoplanets are excellent candidates to support life, alongside Proxima, which to date was the planet that presented the best conditions for habitability.

Experts believe between the closest star to our solar system -- Proxima Centauri that is four light years away, and Teegarden (the 24th furthest away at 12 light years) -- there are dozens of stars, some with planets orbiting them, but "apart from Proxima, none of them present ideal conditions (for life)," Ribas said.

Researchers have not ruled out the possibility of there being more planets orbiting Teegarden, but the system would have to be observed in more detail. "These planets are of great interest in order to search for life in the mid-term," Ribas said.

Without doubt, for the scientist, the forthcoming decade will be thrilling and key in space exploration and the search for suitable terrestrial exoplanets.

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News Network
January 10,2020

New Delhi, Jan 10: The Supreme Court while hearing petitions challenging restrictions in Jammu and Kashmir on Friday stated that the right to access the internet is a fundamental right under Article 19 of the Constitution of India.

"It is no doubt that freedom of speech is an essential tool in a democratic setup. The freedom of Internet access is a fundamental right under Article 19(1)(a) of the Constitution," a two-judge bench headed by Justice N V Ramana stated while reading out the judgment.

The top court said that Kashmir has seen a lot of violence and that it will try to maintain a balance between human rights and freedoms with the issue of security.

It also directed the Jammu and Kashmir administration to review the restrictive orders imposed in the region within a week. “The citizens should be provided highest security and liberty,” the apex court added.

The top court made observations and issued directions while pronouncing the verdict on a number of petitions challenging the restrictions and internet blockade imposed in Jammu and Kashmir after the abrogation of Article 370 in August last year.

The Supreme Court had on November 27 reserved the judgment on a batch of petitions challenging restrictions imposed on communication, media and telephone services in Jammu and Kashmir pursuant to revocation of Article 370.

The court heard the petitions filed by various petitioners including Congress leader Ghulam Nabi Azad and Kashmir Times editor Anuradha Bhasin.

The petitions were filed after the central government scrapped Article 370 in August and bifurcated Jammu and Kashmir into two Union Territories -- Jammu and Kashmir and Ladakh. Following this, phone lines and the internet were blocked in the region.

The government had, however, contended that it has progressively eased restrictions.

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News Network
January 1,2020

Kolkata, Jan 1: US-based Bangladeshi author and playwright Sharbari Zohra Ahmed feels that the people of the country of her origin are more alike than different from Indians as they were originally Hindus.

But Bangladeshis now want to forget their Hindu roots, said the author, who was born in Dhaka and moved to the United States when she was just three weeks old.

Ahmed, who is the co-writer of the Season 1 of 'Quantico', a popular American television drama thriller series starring Priyanka Chopra, rues that her identity as a Bengali is getting lost in Bangladesh due to the influence of right-wing religious groups.

"How can Bangladesh deny its Hindu heritage? We were originally Hindus. Islam came later," Ahmed said while speaking to PTI here recently.

"The British exploited us, stole from us and murdered us," she said about undivided India, adding that the colonialists destroyed the thriving Muslin industry in Dhaka.

Ahmed said the question of her belief and identity in Bangladesh, where the state religion is Islam, has prompted her to write her debut novel 'Dust Under Her Feet'.

The British exploitation of India and the country's partition based on religion has also featured in her novel in a big way.

Ahmed calls Winston Churchill, the British prime minister during World War II, a "racist".

"He took the rice from Bengal to feed his soldiers and didn't care when he was told about that.

"During my research, I learnt that two million Bengalis died in the artificial famine that was created by him. When people praise Churchill, it is like praising Hitler to the Jews. He was horrible," she said.

The author said her novel is an effort to tell the readers what actually happened.

"Great Britain owes us three trillion dollars. You have to put in inflation. Yet, they (the British) still have a colonial mentality and white colonisation is on the rise again," Ahmed, who was in the city to promote her novel, said.

The novel is based in Kolkata, then Calcutta, during World War II when American soldiers were coming to the city in large numbers.

The irony was that while these American soldiers were nice to the locals, they used to segregate the so-called "black" soldiers, the novelist said.

"Calcutta was a cosmopolitan and the rest of the world needs to know how the city's people were exploited, its treasures looted, people divided and hatred instilled in them," she said.

"Kolkata was my choice of place for my debut novel since my mother was born here. She witnessed the 'Direct Action Day' when she was a kid and was traumatised. She saw how a Hindu was killed by Muslims near her home in Park Circus area (in the city)," Ahmed said.

Direct Action Day, also known as the Great Calcutta Killings, was a massive communal riot in the city on August 16, 1946 that continued for the next few days.

Thousands of people were killed in the violence that ultimately paved the way for the partition of India.

'Dust Under Her Feet' is set in the Calcutta of the 1940s and Ahmed in her novel examines the inequities wrought by racism and colonialism.

The story is of young and lovely Yasmine Khan, a doyenne of the nightclub scene in Calcutta.

When the US sets up a large army base in the city to fight the Japanese in Burma, Yasmine spots an opportunity.

The nightclub is where Yasmine builds a family of singers, dancers, waifs and strays.

Every night, the smoke-filled club swarms with soldiers eager to watch her girls dance and sing.

Yasmine meets American soldier Lt Edward Lafaver in the club and for all her cynicism, finds herself falling helplessly for a married man who she is sure will never choose her over his wife.

Outside, the city lives in constant fear of Japanese bombardment at night. An attack and a betrayal test Yasmine's strength and sense of control and her relationship with Edward.

Ahmed teaches creative writing in the MFA program in Manhattanville College and is artist-in-residence in Sacred Heart University's graduate film and television programme.

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abdullah
 - 
Wednesday, 1 Jan 2020

Is she trying to take over Shoorpanakhi Taslim Nasreen? 

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News Network
February 9,2020

New Delhi, Feb 9: Calling India a "long-standing friend", Sri Lankan Prime Minister Mahinda Rajapaksa on Saturday thanked Prime Minister Narendra Modi for visiting his country in the aftermath of last year's Easter Sunday terror attacks and outlined that New Delhi has always helped Colombo in its fight against terrorism.

In a joint press briefing with PM Modi, Mahinda Rajapaksa said he hopes that India will continue to help Sri Lanka fight terrorism.

Mahinda Rajapaksa expressed his gratitude to PM Modi for the neighbourhood first policy and the priority India gives to Sri Lanka.

"We had agreed that our cooperation is multifaceted and priority is given to a number of areas including security, economy, culture and social sectors. Part of our discussions centered on cooperation with regard to the security of the two countries. India has always assisted Sri Lanka to enhance our capacity, capabilities in intelligence and counter-terrorism. We look forward to getting continued support in this regard," he said.

"I thank the Prime Minister for visiting Sri Lanka in the aftermath of the Easter Sunday terror attacks that provided us with immense strength to come to terms with the tragedy. We also appreciate Prime Minister Modi's $400 million line of credit to enhance the economy of Sri Lanka and another $50 million line of credit for fighting terrorism," he added.

The Sri Lankan president urged PM Modi to consider further assistance to expand housing projectS all over Sri Lanka to benefit people from rural areas.

"The Prime Minister and I discussed how Sri Lanka and India can work together in the field of economy. India is among the world's fastest growing economies. I discussed with PM Modi how Sri Lanka could benefit from certain economic sectors where India is in a strong position," he said.

Concluding his statement, Mahinda Rajapaksa said, "India is our closest neighbour and a long-standing friend. The close historical links...provided a solid foundation to our ties."

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