Revealed: New Earth-like planet that could have a life-supporting climate and water

 

A new ‘super-Earth’ has been discovered that could have a life-supporting climate and water.

The planet, given the catchy name HD 40307g, was discovered in a multi-world solar system 42 light years from the Sun and lies at exactly the right distance from its star to allow liquid surface water.

It orbits well within the star's “habitable” or “Goldilocks” zone - the region where temperatures are neither too hot nor too cold to sustain life.

Professor Hugh Jones, from the University of Hertfordshire said: “The longer orbit of the new planet means that its climate and atmosphere may be just right to support life.”

”Just as Goldilocks liked her porridge to be neither too hot nor too cold but just right, this planet or indeed any moons that is has lie in an orbit comparable to Earth, increasing the probability of it being habitable.“

The ‘super earth’ is one of six planets believed to circle the dwarf star HD 40307 in the constellation Pictor.

All the others are located outside the habitable zone, too close to their parent star to support liquid water.

Three of these were originally identified in 2009 by European Southern Observatory astronomers who used an instrument called Harps (High Accuracy Radial Velocity Planet Searcher) that reveals planets by detecting changes in starlight colour.

A new analysis of the Harps data has now revealed three more super-Earths – with HD 40307g exciting astronomers considerably more than the others thanks to its greater distance from its star.

Scientists believe the planet turns on its axis, giving it a regular day and night cycle and making its environment even more Earth-like.

Planets orbiting too close to their stars risk being ”tidally locked“ so they always have the same face pointing towards the star.

In the same way, the Moon always has its nearside facing the Earth. One side of such a planet is likely to be scorching hot while the other is dark and cold.

Scientists doubt that tidally locked planets could be habitable.

Like many other extra-solar planets, HD 40307g was found by observing wobbles in the motion of its parent star caused by the tug of its gravity.

The wobbles stretch or compress the wavelength of light from the star as seen from the Earth, making it redder as it moves away and bluer as it comes closer.

Analysing these patterns can provide information about the planet's mass.

Voices
voicesGood for Lana Del Rey for helping kill that myth, writes Grace Dent
Sport
The Pipes and Drums of The Scottish Regiments perform during the Opening Ceremony for the Glasgow 2014 Commonwealth Games at Celtic Park on July 23, 2014 in Glasgow, Scotland.
Commonwealth GamesThe actor encouraged the one billion viewers of the event to donate to the children's charity
Arts and Entertainment
The Tour de France peloton rides over a bridge on the Grinton Moor, Yorkshire, earlier this month
film
Life and Style
fashion Designs are part of feminist art project by a British student
PROMOTED VIDEO
News
Very tasty: Vladimir Putin dining alone, perhaps sensibly
newsJohn Walsh salutes those brave souls who have, throughout history, put their knives on the line
News
The University of California study monitored the reaction of 36 dogs
sciencePets' range of emotions revealed
Arts and Entertainment
The nomination of 'The Wake' by Paul Kingsnorth has caused a stir
books
News
Joining forces: young British men feature in an Isis video in which they urge Islamists in the West to join them in Iraq and Syria
newsWill the young Britons fighting in Syria be allowed to return home and resume their lives?
News
i100
News
Snoop Dogg pictured at The Hollywood Reporter Nominees' Night in February, 2013
people... says Snoop Dogg
Life and Style
food + drinkZebra meat is exotic and lean - but does it taste good?
News
ebookA unique anthology of reporting and analysis of a crucial period of history
News
Bey can do it: Beyoncé re-enacts Rosie the Riveter's pose
newsRosie the Riveter started out as an American wartime poster girl and has become a feminist pin-up. With Beyoncé channeling her look, Gillian Orr tells her story
Life and Style
Donna and Paul Wheatley at their wedding
healthShould emergency hospital weddings be made easier for the terminally ill?
Arts and Entertainment
Residents of Derby Road in Southampton oppose filming of Channel 4 documentary Immigration Street in their community
tv
Voices
voicesSiobhan Norton on why she eventually changed her mind
News
i100
Independent
Travel Shop
the manor
Up to 70% off luxury travel
on city breaks Find out more
santorini
Up to 70% off luxury travel
on chic beach resorts Find out more
sardina foodie
Up to 70% off luxury travel
on country retreats Find out more
Latest stories from i100
Have you tried new the Independent Digital Edition apps?
Independent Dating
and  

By clicking 'Search' you
are agreeing to our
Terms of Use.

iJobs Job Widget
iJobs General

BI Manager - £50,000

£49000 - £55000 per annum + competitive: Progressive Recruitment: My client is...

BI Project Manager - £48,000 - £54,000 - Midlands

£48000 - £54000 per annum + Benefits package: Progressive Recruitment: My clie...

VB.Net Developer

£35000 - £45000 per annum + competitive: Progressive Recruitment: If you're pa...

SAP Business Consultant (SD, MM and FICO), £55,000, Wakefield

£45000 - £55000 per annum + competitive: Progressive Recruitment: SAP Business...

Day In a Page

Screwing your way to the top? Good for Lana Del Rey for helping kill that myth

Screwing your way to the top?

Good for Lana Del Rey for helping kill that myth, says Grace Dent
Will the young Britons fighting in Syria be allowed to return home and resume their lives?

Will Britons fighting in Syria be able to resume their lives?

Tony Blair's Terrorism Act 2006 has made it an offence to take part in military action abroad with a "political, ideological, religious or racial motive"
Beyoncé poses as Rosie the Riveter, the wartime poster girl who became a feminist pin-up

Beyoncé poses as Rosie the Riveter

The wartime poster girl became the ultimate American symbol of female empowerment
Climate change threatens to make the antarctic fur seal extinct

Take a good look while you can

How climate change could wipe out this seal
Should emergency hospital weddings be made easier for the terminally ill?

Should emergency hospital weddings be made easier?

Some couples are allowed emergency hospital weddings, others are denied the right. Kate Hilpern reports on the growing case for a compassionate cutting of the red tape
Man Booker Prize 2014 longlist: Crowdfunded novel nominated for first time

Crowdfunded novel nominated for Booker Prize

Paul Kingsnorth's 'The Wake' is in contention for the prestigious award
Vladimir Putin employs a full-time food taster to ensure his meals aren't poisoned

Vladimir Putin employs a full-time food taster

John Walsh salutes those brave souls who have, throughout history, put their knives on the line
Tour de France effect brings Hollywood blockbusters to Yorkshire

Tour de France effect brings Hollywood blockbusters to Yorkshire

A $25m thriller starring Sam Worthington to be made in God's Own Country
The 10 best pedicure products

Feet treat: 10 best pedicure products

Bags packed and all prepped for holidays, but feet in a state? Get them flip-flop-ready with our pick of the items for a DIY treatment
Noel Fielding's 'Luxury Comedy': A land of the outright bizarre

Noel Fielding's 'Luxury Comedy'

A land of the outright bizarre
What are the worst 'Word Crimes'?

What are the worst 'Word Crimes'?

‘Weird Al’ Yankovic's latest video is an ode to good grammar. But what do The Independent’s experts think he’s missed out?
Can Secret Cinema sell 80,000 'Back to the Future' tickets?

The worst kept secret in cinema

A cult movie event aims to immerse audiences of 80,000 in ‘Back to the Future’. But has it lost its magic?
Facebook: The new hatched, matched and dispatched

The new hatched, matched and dispatched

Family events used to be marked in the personal columns. But now Facebook has usurped the ‘Births, Deaths and Marriages’ announcements
Why do we have blood types?

Are you my type?

All of us have one but probably never wondered why. Yet even now, a century after blood types were discovered, it’s a matter of debate what they’re for
Honesty box hotels: You decide how much you pay

Honesty box hotels

Five hotels in Paris now allow guests to pay only what they think their stay was worth. It seems fraught with financial risk, but the honesty policy has its benefit