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.

Comments

Add new comment

  • Coastaldigest.com reserves the right to delete or block any comments.
  • Coastaldigset.com is not responsible for its readers’ comments.
  • Comments that are abusive, incendiary or irrelevant are strictly prohibited.
  • Please use a genuine email ID and provide your name to avoid reject.
Agencies
January 11,2020

New Delhi, Jan 11: The Supreme Court is scheduled to hear the curative petition of two death row convicts in 2012 Nirbhaya gang-rape case on January 14.

A five-judge Bench of Justices N V Ramana, Arun Mishra, R F Nariman, R Banumathi and Ashok Bhushan will hear the petition filed by Vinay Sharma and Mukesh.

The duo had moved a curative petition in the top court after a Delhi court issued a death warrant in their name and announced January 22 as the date of their execution.

Besides them, two other convicts named Pawan and Akshay are also slated to be executed on the same day at 7 am in Delhi's Tihar Jail premises.

They were convicted and sentenced to death for raping a 23-year-old woman on a moving bus in the national capital on the night of December 16, 2012.

The victim, who was later given the name Nirbhaya, died at a hospital in Singapore where she had been airlifted for medical treatment.

A curative petition is the last judicial resort available for redressal of grievances. It is decided by the judges in-chamber.

If it is rejected, they are legally bound to move a mercy petition. It is filed before the President who has the power to commute it to life imprisonment.

The court after issuing a black warrant in their name gave them two weeks' time to file both the curative and mercy petition.

Comments

Add new comment

  • Coastaldigest.com reserves the right to delete or block any comments.
  • Coastaldigset.com is not responsible for its readers’ comments.
  • Comments that are abusive, incendiary or irrelevant are strictly prohibited.
  • Please use a genuine email ID and provide your name to avoid reject.
Agencies
April 17,2020

New Delhi, Apr 17: The Indian Railways turned 167 years old on Thursday and for the first time ever, its trains did not carry any passengers on its birthday and instead stood idle in the yards waiting for the nationwide lockdown to end.

On this day 167 years ago, the wheels of the first passenger train in the country from Mumbai to Thane started rolling.

In 1974, Indians experienced life without trains for the first time. In May 1974 during the strike of the railways that lasted for around three weeks, drivers, station masters, guards, track staff and many others went on 'chakka jam' demanding fixed working hours for train drivers and an across-the-board pay hike.

"I can recall those times vividly. I remember that our leader George Fernandes had almost secured a deal with the then railway minister, but it fell through when it was taken to the then Prime Minister Indira Gandhi," All India Railwaymens Federation General Secretary Shiv Gopal Mishra, who was an apprentice in the railways at that time, told PTI.

"Fernandes was arrested in Lucknow. The workers went through a lot at that time. But those were days that angry workers had refused to give in and took great risks to get their demands met," he said.

However, just like this time, four decades ago too freight trains carrying essential supplies were run and the unions agreed to let some passenger trains run on the trunk routes like the Kalka Mail from Howrah to Delhi.

"Never ever in its history, there has been such a long interruption of services. Not during the World Wars, not during the 1974 railway strike, or any other national calamity or natural disaster," a railway spokesperson said.

The first Indian Railways passenger train was flagged off on April 16, 1853, from Mumbai to nearby Thane.

On Thursday, the Railway Ministry wished the railways a happy birthday on Twitter - "Today, 167 years ago with the zeal of 'never to stop' the wheels of the first passenger train from Mumbai to Thane started rolling. For the first time, passenger services are stopped for your safety. Stay indoors & make the nation victorious," it said.

Railway has suspended all passenger services since March 25 till May 3 due to the coronavirus outbreak. Around 15,523 trains run by the railways have been affected including 9,000 passenger trains and 3,000 mail express services which are run daily. It caters to over 20 million passengers every day.

According to the Union health ministry, the death toll due to coronavirus rose to 414 and the number of cases to 12,380 in the country on Thursday.

Comments

Add new comment

  • Coastaldigest.com reserves the right to delete or block any comments.
  • Coastaldigset.com is not responsible for its readers’ comments.
  • Comments that are abusive, incendiary or irrelevant are strictly prohibited.
  • Please use a genuine email ID and provide your name to avoid reject.
Agencies
July 3,2020

The dollar's dominance will slowly melt away over the coming year on weakening global demand and a sombre U.S. economic outlook, according to a Reuters poll of currency forecasters whose views depend on there being no second coronavirus shock.

Despite fears a surge in new Covid-19 cases would delay economies reopening and stymie a tentative recovery, world stocks have rallied - with the S&P 500 finishing higher in June, marking its biggest quarterly percentage gain since the height of the technology boom in 1998.

Caught between bets in favour of riskier investments, weak U.S. economic prospects as well as an easing in the thirst for dollars after the Federal Reserve flooded markets with liquidity, the greenback fell nearly 1.0 per cent last month. It was its worst monthly performance since December.

While there was a dire prognosis from the top U.S. medical expert on the coronavirus' spread, the June 25-July 1 poll of over 70 analysts showed weak dollar projections as Fed Chair Jerome Powell on Monday reiterated the economic outlook for the world's largest economy was uncertain.

"The dollar rises in two instances: when you see risk off or when there is a situation where the U.S. is leading the global recovery, and we don't think that's going to be the case anytime soon," said Gavin Friend, senior FX strategist at NAB Group in London.

"The U.S. is playing fast and loose with the virus, and chronologically they're behind the rest of the world."

Currency speculators, who had built up trades against the dollar to the highest in two years during May, increased their out-of-favour dollar bets further last week, the latest positioning data showed.

About 80 per cent of analysts, 53 of 66, said the likely path for the dollar over the next six months was to trade around current levels, alternating between slight gains and losses in a range. That suggests the greenback may be at a crucial crossroad as more currency strategists have turned bearish.

But more than 90 per cent, or 63 of 68, said a second shock from the pandemic would push the dollar higher. Five said it would push the U.S. currency lower.

Much will also depend on debt servicing and repayments by Asian, European and other international borrowers in U.S. dollars.

While an early shortage of dollars in March from the pandemic's first shock pushed the Fed to open currency swap lines with major central banks, international funding strains have eased significantly since. In recent weeks, usage of the facility has reduced dramatically.

That trend is expected to continue over the next six months with major central banks' usage of swap lines to "stay around current levels", according to 32 of 46 analysts. While 13 predicted a sharp drop, only one respondent said use of them would "rise sharply".

The dollar index, which measures the greenback's strength against six other major currencies, has slipped over 5 per cent since touching a more than three-year high in March.

When asked which currencies would perform better against the dollar by end-December, a touch over half of 49 respondents said major developed market ones, with the remaining almost split between commodity-linked and emerging market currencies.

"The dollar is so overvalued, and has been overvalued for a long time, it's time now for it to come back down again, as we head towards the (U.S.) election," added NAB's Friend.

Over the last quarter, the euro has staged a 1.8 per cent comeback after falling by a similar margin during the first three months of the year. For the month of June, the euro was up 1.2 per cent against the dollar.

The single currency was now expected to gain about 2.5 per cent to trade at $1.15 in a year from around $1.12 on Wednesday, slightly stronger than $1.14 predicted last month. While those findings are similar to what analysts have been predicting for nearly two years, there was a clear shift in their outlook for the euro, with the range of forecasts showing higher highs and higher lows from last month.

"In comparison to even a month or two ago, the outlook in Europe has improved significantly," said Lee Hardman, currency strategist at MUFG.

"I think that makes the euro look relatively more attractive and cheap against the likes of the dollar. We're not arguing strongly for the euro to surge higher, we're just saying, after the weakness we have seen in recent years, there is the potential for that weakness to start to reverse."

Comments

Add new comment

  • Coastaldigest.com reserves the right to delete or block any comments.
  • Coastaldigset.com is not responsible for its readers’ comments.
  • Comments that are abusive, incendiary or irrelevant are strictly prohibited.
  • Please use a genuine email ID and provide your name to avoid reject.