Astronomers discover ‘Super-Earth’ orbiting Sun’s nearest star

Agencies
November 15, 2018

Paris, Nov 15: A "super-Earth" has been discovered orbiting the closest single star to our Sun, scientists said Wednesday in a breakthrough that could shine a light on Earth's nearest planetary neighbours.

Astronomers studied Barnard's Star, a red dwarf just six light years away -- practically in our back garden, galactically speaking -- and noticed the presence of a "frozen, dimly lit world" at least 3.2 times heavier than Earth.

A handout picture released by the European Southern Observatory (ESO), shows an artist's impression of a 'super-Earth' planet viewed from space.

The planet, known for now as Barnard's Star b, is the second nearest to Earth outside the solar system and orbits its host star once every 233 days.

"It's important because it's really our nextdoor neighbour and we like to meet our neighbours in general," Ignasi Ribas, from the Institute of Space Studies of Cataloniaand Spain's Institute of Space Sciences, told AFP.

Despite being relatively close to its parent star, the planet receives less than two per cent of the energy Earth gets from the Sun, and the team estimates it has a surface temperature of -170 degrees Celsius (-274 Fahrenheit) -- far too cold to support life as we know it.

"It's definitely not in the habitable zone, no liquid water. If it has any water or gas this is probably in solid form so that's why we call it frozen," said Ribas.

In mankind's bid to map the planets in the night sky, most historic research has focused on brighter, newer stars, which produce more light and increase the chances of scientists noticing anything orbiting them.

But since Barnard's Star is a red dwarf, a small and cooling star probably about twice as old as the Sun, it produces relatively little light making it hard to discern any bodies in its orbit.

To find Barnard's Star b, Ribas and the team studied more than 20 years' worth of observations from seven separate instruments.

They then used a phenomenon known as the Doppler effect to track the impact of its gravitational pull on its parent star.

Astronomers can use this technique to measure a planet's velocity and, therefore, mass.

"We have all worked very hard on this breakthrough," said Guillem Anglada Escude, from London's Queen Mary University, who co-authored the study published in the journal Nature.

The team worked with the European Southern Observatory using astronomical instruments so accurate they can detect changes in a star's velocity as small as 3.5 kilometres (2.2 miles) per hour -- a gentle walking pace.

It's thought that Barnard's Star is tearing through space at around 500,000 km/h, making it the fastest-moving known object in the universe.

Ribas said that although stargazers could predict its size and orbit with relative accuracy using the Doppler effect, any attempt at this stage to find out what the new planet looked like would be "guesswork".

"It's sort of in a fuzzy area with respect to its properties. We've seen planets of this mass be rocky, meaning that it could look like Earth with a solid surface with potentially some atmosphere or some frozen layer on top," he said.

"Or it may be what we call a mini-Neptune, like a scaled-down version of the gas giants of our solar system."

It might be cold, inhospitable and all but invisible but the new planet has one thing going for it: it's really close.

The only known exoplanet closer to Earth was discovered in 2016 orbiting one of a cluster of stars in the Alpha Centauri system, just over four light years away.

"There's not so many stars in our immediate neighbourhood. The investment to find them is expensive," said Ribas.

"It's really near and therefore if you have the hope -- like I do -- of eventually seeing these planets to study them in detail we have to start with the immediate ones. It could lead potentially to other discoveries."

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News Network
April 24,2024

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Pro-Gaza US protesters in New York's Columbia University say they will stay put despite the university's harassment and police crackdown.

The protesters said they refuse to concede to "cowardly threats and blatant intimidation" by university administration, asserting that they will continue to peacefully protest.

Columbia University threatened the students with the national guard after refusing to bargain in good faith.

The university announced a midnight deadline for talks regarding the removal of pro-Palestine encampments on the varsity campus, warning that their campsite will be forcefully cleared by police if no agreement is reached.

The university campus is being used as a campsite for hundreds of pro-Palestine protesters and other activists, who have gathered and set up numerous tents.

Pro-Palestinian protests at colleges have demanded that their universities divest from corporations doing business with Israel or profiting off the war in Gaza. At Columbia, protesters have also asked the university to end a dual-degree program with Tel Aviv University.

The deadline was announced by Columbia University President Minouche Shafik late Tuesday, as authorities across major American universities have launched their repression campaigns against the pro-Palestinian protests on campuses, amid rising anger over US's support for Israel. 

Shafik has issued a midnight deadline to protesters and organizers, warning that failure to comply will result in the forcible clearance of the camp by the New York Police Department (NYPD).

The university has engaged in discussions with student leaders behind the protests, which are part of a series of protests taking place at various colleges nationwide and resulting in multiple arrests.

The purpose of these talks is to address the encampment on the west lawn of Columbia's Morningside Heights campus.

American universities are grappling with the challenge of maintaining a delicate balance between the right to protest and freedom of speech, while also ensuring campus rules and safety, as tensions surrounding the ongoing war in Gaza continue to permeate across campuses.

Meanwhile, Shafik underscored the importance of free speech and the right to demonstrate, but highlighted significant safety issues, disruptions to campus activities, and a strained environment due to the encampment. She firmly stated that any form of intimidation, harassment, or discrimination would not be accepted.

The arrest of more than 100 protesters at Columbia University last week led to more campus demonstrations, at New York University, Yale, and the University of California, Berkeley.

Palestinian university professor Sami al-Arian said what is happening across US university campuses is unprecedented.

Al-Arian said, "I lived four decades in the US, 28 years of which were in academic settings. During my time, it was a very challenging struggle to present an anti-Zionist narrative."

"But the passion, courage, humanity, creativity, and determination displayed these days by students across US campuses make me proud. The Zionist grip on US society is weakening and waning."

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News Network
April 22,2024

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New Delhi: Even though Prime Minister Narendra Modi's nasty election speech in Rajasthan's Banswara has triggered a nationwide controversy, the Election Commission has so far not taken any action. Meanwhile the Opposition bloc INDIA called the speech an attempt to divert attention from "real issues".

Addressing the people Banswara, on April 21, (Sunday) Modi openly attacked India’s Muslims, suggesting they were “infiltrators” and went on to claim that the opposition if elected would give away “mangalsutras” and “land” of those listening to his speech to them (Muslims). 

He referred to his immediate predecessor, Dr Manmohan Singh who was in office for 10 years as prime minister till 2014, and said, “Earlier, when his government was in power, he had said that Muslims have the first right on the country’s property, which means who will they collect this property and distribute it to – those who have more children, will distribute it to the infiltrators. Will the money of your hard work be given to the infiltrators? Do you approve of this?” 

Modi went on to say, “This Congress manifesto is saying that they will calculate the gold of the mothers and sisters, get information about it and then distribute it. Manmohan Singh’s government had said that Muslims have the first right on property. Brothers and sisters, these urban Naxal thoughts will not let even your mangalsutra escape, they will go this far.”

Narendra Modi and the BJP so far in their campaign trail have invoked religious faith, the Ram temple and Lord Ram multiple times, directly using it to call for people to vote for them. The Election Commission has been completely silent on the messaging via videos, tweets and other exhortations. 

Did Manmohan Singh really say that?

Modi’s claim that Dr Singh said that is not new and was refuted in 2006 itself by Singh’s PMO, when Modi had first made the false claim. The PMO had termed such remarks, “a deliberate and mischievous misinterpretation of what the Prime Minister said here yesterday at the meeting of the National Development Council, on fiscal priorities of the government.” It was termed “an avoidable controversy has been generated. The Prime Minister’s observations have also been quoted out of context in some sections of the electronic media, fuelling a baseless controversy.”

The full text of the paragraph in which the Prime Minister referred to the issue of minority empowerment to clarify the matter is as follows:

“I believe our collective priorities are clear: agriculture, irrigation and water resources, health, education, critical investment in rural infrastructure, and the essential public investment needs of general infrastructure, along with programmes for the upliftment of SC/STs, other backward classes, minorities and women and children. The component plans for Scheduled Castes and Scheduled Tribes will need to be revitalized. We will have to devise innovative plans to ensure that minorities, particularly the Muslim minority, are empowered to share equitably in the fruits of development. They must have the first claim on resources. The Centre has a myriad other responsibilities whose demands will have to be fitted within the over-all resource availability.”

The PMO’s clarification said. “it will be seen from the above that the Prime Minister’s reference to “first claim on resources” refers to all the “priority” areas listed above, including programmes for the upliftment of SCs, STs, OBCs, women and children and minorities.

Opposition reacts

Chairman, Media and Publicity department of the Congress, Pawan Khera said in a video message in a post, “We challenge the Prime Minister to show us if the word Hindu or Muslim is written anywhere in our manifesto. This kind of lightness is there in your mentality, in your political values. We have talked about justice for the youth, women, farmers, tribals, middle class and workers. Do you object to this as well?”

Khera was referring to earlier mistruths uttered by Modi about the “Muslim League” having influenced the Congress manifesto.

In Jharkhand’s Ranchi at an opposition rally, Congress president Mallikarjun Kharge is reported to have said by BBC Hindi, “If democracy and the Constitution end in the country, then the people will have nothing left. Babasaheb Ambedkar ji and Jawaharlal Nehru ji gave equal voting rights to everyone, due to which all classes got respect. But Narendra Modi wants to snatch their rights from the poor.”

B.V. Srinivas termed it as unfortunate that “this person is the Prime Minister of this country, and an even bigger tragedy is that the Election Commission of India is no longer alive.” He said that “due to the frustration of impending defeat, the Prime Minister of India is openly sowing the seeds of hatred, he is polarising by misquoting Manmohan Singh’s 18-year-old incomplete statement, But the Election Commission (Modi ka parivar) is bowing down.”

Modi’s past hate-speech

Modi, in his 12-year tenure as chief minister of Gujarat was known to have made speeches targeting the state’s minority Muslim community brazenly, terming camps where Muslims were forced to stay in after communal violence gripped the state in 2002. Frontline covered him on his Gujarat Gaurav Yatra started shortly after the violence, at a rally at Becharaji in Mehsana district in northern Gujarat, when he said, “What should we do? Run relief camps for them? Do we want to open baby-producing centres? But for certain people that means hum paanch, hamare pachees.” 

In 2017 it was time again for direct speech targeting Muslims when in February he spoke of ‘shamshaan versus kabristan’ campaigning for UP and then for Gujarat elections when the BJP had its worst performance this millennium, in a speech at Palanpur on December 10, 2017 Modi invoked a “secret meeting” to get Pakistan to fix Gujarat’s assembly polls. He said that a meeting was held at Congress leader Mani Shankar Aiyar’s residence, attended by former PM Manmohan Singh, former Vice-President Hamid Ansari, former Army Chief Deepak Kapoor and distinguished diplomats to execute the plot. Modi’s PMO faced embarrassment when in response to an RTI filed by the Congress, his office was forced to say that Modi’s campaign speech could have been based on an “informal input”.

In the only question he has answered as part of a press conference with Joe Biden on June 22, 2023, Modi was asked, “India has long prided itself as the world’s largest democracy, but there are many human rights groups who say that your government has discriminated against religious minorities and sought to silence its critics.  As you stand here in the East Room of the White House, where so many world leaders have made commitments to protecting democracy, what steps are you and your government willing to take to improve the rights of Muslims and other minorities in your country and to uphold free speech?”

In response Modi appeared visibly frazzled and denied all charges. “I’m actually really surprised that people say so.  And so, people don’t say it.  Indeed, India is a democracy.” 

The journalist was trolled online by BJP leaders and supporters to such an extent that the White House had to come out and defend her and strongly denounce the trolling and abuse.

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News Network
April 13,2024

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New Delhi, May 13: Warmongering Israel is bracing for a potential direct attack by Iran as warnings grow of retaliation for the provocative killing last week of a senior officer in Iran's embassy in Damascus. US and other intelligence assessments have said the retaliation could come as soon as Sunday. The unprecedented attack could trigger an all-out regional war.

US President Joe Biden has also warned Israel that he expects a strike from Iran soon, but has warned the clerical state not to attack.

"I don't want to get into secure information but my expectation is sooner than later," Biden told reporters after an event.

Asked what his message was to Iran on striking Israel, Biden said, "Don't."

An assault from Iranian soil has emerged as one of the main scenarios expected by the Jewish state and its allies, according to reports by the Wall Street Journal and Bloomberg. A bombardment with drones and precision missiles could come within the next 24 hours, the reports said citing people familiar with the matter.

Any Iranian attack on Israel would likely be a combination of missiles and drones, based on current capabilities outlined in a new Defense Intelligence Agency Worldwide Threat assessment released late Thursday.

The regime "has a substantial inventory of ballistic and cruise missiles capable of striking targets as far as 2,000 kilometers from its borders," the agency said.

The US has rushed additional military assets to protect Israel and American forces in the region. The country has moved two Navy destroyers to the Eastern Mediterranean Sea, according to a Navy official. One is the USS Carney, which was recently in the Red Sea performing air defence against Houthi drones and anti-ship missiles.

America has also doubled down its diplomatic efforts to rein in hostilities in the region, which has been on the edge since Israel launched a mega offensive on Palestine to destroy the militant organisation Hamas.

US officials have been working to send messages to Iran, including through an established Swiss channel, while talking to Israel, Saudi Arabia, Qatar, and other governments. Biden has also sent the head of US Central Command, General Michael Kurilla, to Israel for urgent talks on the threat from Iran.

The 'shadow war' between the two Middle Eastern countries heated up when an Israeli airstrike hit the Iran consulate in Damascus, killing seven people, including two generals. Iran immediately issued a statement saying that it is prepared for war and will deliver a "slap" to Israel.

Israel has been on alert since then, canceling home leave for combat troops, calling up reserves, and bolstering air defenses. Its military scrambled navigational signals over Tel Aviv on Thursday to disrupt GPS-navigated drones or missiles that might be fired at the country.

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