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.

News
The cartoon produced by Bruce MacKinnon for the Halifax Chronicle-Herald on Thursday, showing the bronze soldiers of the war memorial in Ottawa welcoming Corporal Cirillo into their midst
news
Voices
Funds raised from the sale of poppies help the members of the armed forces with financial difficulties
voicesLindsey German: The best way of protecting soldiers is to stop sending them into disastrous conflicts
Voices
Nigel Farage has backed DJ Mike Read's new Ukip song
voicesNigel Farage: Where is the Left’s outrage over the sexual abuse of girls in the North of England?
Property
One bedroom terraced house for sale, Richmond Avenue, Islington, London N1. On with Winkworths for £275,000.
property
PROMOTED VIDEO
News
ebooksAn unforgettable anthology of contemporary reportage
Life and Style
Text messaging changes as a relationship evolves
life
News
The comedian, 42, made the controversial comment following the athlete’s sentencing to five years for the culpable homicide of Reeva Steenkamp on Tuesday
peopleComedian's quip about Reeva Steenkamp was less than well received at music magazine awards
Sport
Cristiano Ronaldo in action for Real Madrid
football
News
peoplePerformer had recently been diagnosed with prostate cancer
Life and Style
food + drink
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

SSRS Report Developer - Urgent Contract - London - £300pd

£300 Per Annum: Clearwater People Solutions Ltd: SSRS Report Developer – 3 Mon...

KS1 Teacher

£95 - £150 per day: Randstad Education Birmingham: Key Stage 1 teacher require...

HR Business Partner - Essex - £39,000 plus benefits

£32000 - £39000 per annum + benefits + bonus: Ashdown Group: Generalist HR Man...

Trainee Recruitment Consultant

£18000 - £30000 per annum + uncapped: SThree: Do you feel like your sales role...

Day In a Page

How could three tourists have been battered within an inch of their lives by a burglar in a plush London hotel?

A crime that reveals London's dark heart

How could three tourists have been battered within an inch of their lives by a burglar in a plush London hotel?
Meet 'Porridge' and 'Vampire': Chinese state TV is offering advice for citizens picking a Western moniker

Lost in translation: Western monikers

Chinese state TV is offering advice for citizens picking a Western moniker. Simon Usborne, who met a 'Porridge' and a 'Vampire' while in China, can see the problem
Handy hacks that make life easier: New book reveals how to rid your inbox of spam, protect your passwords and amplify your iPhone

Handy hacks that make life easier

New book reveals how to rid your email inbox of spam, protect your passwords and amplify your iPhone with a loo-roll
KidZania lets children try their hands at being a firefighter, doctor or factory worker for the day

KidZania: It's a small world

The new 'educational entertainment experience' in London's Shepherd's Bush will allow children to try out the jobs that are usually undertaken by adults, including firefighter, doctor or factory worker
Renée Zellweger's real crime has been to age in an industry that prizes women's youth over humanity

'Renée Zellweger's real crime was to age'

The actress's altered appearance raised eyebrows at Elle's Women in Hollywood awards on Monday
From Cinderella to The Jungle Book, Disney plans live-action remakes of animated classics

Disney plans live-action remakes of animated classics

From Cinderella to The Jungle Book, Patrick Grafton-Green wonders if they can ever recapture the old magic
Thousands of teenagers to visit battlefields of the First World War in new Government scheme

Pupils to visit First World War battlefields

A new Government scheme aims to bring the the horrors of the conflict to life over the next five years
The 10 best smartphone accessories

Make the most of your mobile: 10 best smartphone accessories

Try these add-ons for everything from secret charging to making sure you never lose your keys again
Mario Balotelli substituted at half-time against Real Madrid: Was this shirt swapping the real reason?

Liverpool v Real Madrid

Mario Balotelli substituted at half-time. Was shirt swapping the real reason?
West Indies tour of India: Hurricane set to sweep Windies into the shadows

Hurricane set to sweep Windies into the shadows

Decision to pull out of India tour leaves the WICB fighting for its existence with an off-field storm building
Indiana serial killer? Man arrested for murdering teenage prostitute confesses to six other murders - and police fear there could be many more

A new American serial killer?

Police fear man arrested for murder of teen prostitute could be responsible for killing spree dating back 20 years
Sweetie, the fake 10-year-old girl designed to catch online predators, claims her first scalp

Sting to trap paedophiles may not carry weight in UK courts

Computer image of ‘Sweetie’ represented entrapment, experts say
Fukushima nuclear crisis: Evacuees still stuck in cramped emergency housing three years on - and may never return home

Return to Fukushima – a land they will never call home again

Evacuees still stuck in cramped emergency housing three years on from nuclear disaster
Wildlife Photographer of the Year: Intimate image of resting lions claims top prize

Wildlife Photographer of the Year

Intimate image of resting lions claims top prize
Online petitions: Sign here to change the world

Want to change the world? Just sign here

The proliferation of online petitions allows us to register our protests at the touch of a button. But do they change anything?