Scientists discover loneliest planet without a companion sun - Science - News - The Independent

Scientists discover loneliest planet without a companion sun

view gallery VIEW GALLERY

The free-floating planet is estimated to be around 80 light years away from Earth

A lonely planet floating through space without a companion star has been discovered by an international team of astronomers who said that it is the first planet to be found without a sun.

Click here or on 'view gallery' to see more images of exoplanets

The cold, dark planet is about six times the mass of Jupiter – a “gas giant” planet – and is estimated to have formed just 12 million years ago, making it a mere infant in astronomical terms.

Known by its code name, PSO J318.5-22, it was discovered about 80 light years away from Earth by scientists analysing data from the Pan-STARRS 1 telescope sited on top of the Haleakala volcanic mountain on the island of Maui in Hawaii.

“We have never before seen an object free-floating in space that that looks like this. It has all the characteristics of young planets found around other stars, but it is drifting out there all alone. I had often wondered if such solitary objects exist, and now we know they do,” said Michael Liu of the Institute for Astronomy at the University of Hawaii at Manoa, who led the team.

Since the mid-1990s, hundreds of “exoplanets” beyond our own Solar System have been discovered using sophisticated techniques that usually involve detecting the decreased transmission of light as a planet passes in front of its sun.

The lonely planet was found by a different method during a search for failed stars known as brown dwarfs, which are very faint objects due to their cool temperatures and have colours at the red end of the light spectrum.

Niall Deacon of the Max Planck Institute for Astronomy in Germany, and a co-author of the study, said: “Planets found by direct imaging are incredibly hard to study, since they are right next to their much brighter host stars. PSO J318.5-22 is not orbiting a star so it will be much easier for us to study. It is going to provide a wonderful view into the inner workings of gas-giant planets like Jupiter shortly after their birth.”

Other telescopes on the summit of Mauna Kea on the island of Hawaii followed up the initial discovery with further observations in the infrared part of the spectrum. This confirmed that PSO J318.5-22 was not a brown dwarf, but a young planet.

Life and Style
tech
Arts and Entertainment
Robin Thicke's video for 'Blurred Lines' has been criticised for condoning rape
music
News
Paper trail: the wedding photograph found in the rubble after 9/11 – it took Elizabeth Keefe 13 years to find the people in it
newsWho are the people in this photo? It took Elizabeth Stringer Keefe 13 years to find out
Voices
Yes supporters gather outside the Usher Hall, which is hosting a Night for Scotland in Edinburgh
voicesBen Judah: Is there a third option for England and Scotland that keeps everyone happy?
PROMOTED VIDEO
Arts and Entertainment
Matt Damon as Jason Bourne in The Bourne Ultimatum (2007)
filmMatt Damon in talks to return
News
peopleThe report and photo dedicated to the actress’s decolletage has, unsurprisingly, provoked anger
Arts and Entertainment
Evil eye: Douglas Adams in 'mad genius' pose
booksNew biography sheds light on comic genius of Douglas Adams
Life and Style
tech... and together they're worth at least £100 million
Arts and Entertainment
While many films were released, few managed to match the success of James Bond blockbuster 'Skyfall'
filmsDaniel Craig is believed to be donning skies as 007 for the first time
Arts and Entertainment
Fringe show: 'Cilla', with Sheridan Smith in the title role and Aneurin Barnard as her future husband Bobby Willis
tvEllen E Jones on ITV's 'Cilla'
News
ebooksAn unforgettable anthology of contemporary reportage
Life and Style
Bono and Apple CEO Tim Cook announced U2's surprise new album at the iPhone 6 launch
tech(but you can't escape: Bono is always on your iPhone)
Sport
Tim Wiese
sport
Life and Style
Kim Kardashian drawn backlash over her sexy swimsuit selfie, called 'disgusting' and 'nasty'
fashionCritics say magazine only pays attention to fashion trends among rich, white women
Arts and Entertainment
TVShows like Agents of S.H.I.E.L.D are little more than marketing tools
Arts and Entertainment
Hit the roof: hot-tub cinema east London
architectureFrom pools to football pitches, rooftop living is looking up
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

Secondary supply teachers required in Newmarket

£21000 - £35000 per annum: Randstad Education Cambridge: Secondary supply teac...

Programme Test Manager

£400 Per Day: Clearwater People Solutions Ltd: Our client are currently seekin...

IT Network Manager - Shepherd's Bush, London

£28000 - £30000 per annum: Ashdown Group: IT Network Manager - Shepherd's Bush...

Secondary supply teachers needed in Peterborough

£21000 - £35000 per annum: Randstad Education Cambridge: Secondary supply teac...

Day In a Page

Mystery of the Ground Zero wedding photo

A shot in the dark

Mystery of the wedding photo from Ground Zero
His life, the universe and everything

His life, the universe and everything

New biography sheds light on comic genius of Douglas Adams
Save us from small screen superheroes

Save us from small screen superheroes

Shows like Agents of S.H.I.E.L.D are little more than marketing tools
Reach for the skies

Reach for the skies

From pools to football pitches, rooftop living is looking up
These are the 12 best hotel spas in the UK

12 best hotel spas in the UK

Some hotels go all out on facilities; others stand out for the sheer quality of treatments
These Iranian-controlled Shia militias used to specialise in killing American soldiers. Now they are fighting Isis, backed up by US airstrikes

Widespread fear of Isis is producing strange bedfellows

Iranian-controlled Shia militias that used to kill American soldiers are now fighting Isis, helped by US airstrikes
Topshop goes part Athena poster, part last spring Prada

Topshop goes part Athena poster, part last spring Prada

Shoppers don't come to Topshop for the unique
How to make a Lego masterpiece

How to make a Lego masterpiece

Toy breaks out of the nursery and heads for the gallery
Meet the ‘Endies’ – city dwellers who are too poor to have fun

Meet the ‘Endies’ – city dwellers who are too poor to have fun

Urbanites are cursed with an acronym pointing to Employed but No Disposable Income or Savings
Paisley’s decision to make peace with IRA enemies might remind the Arabs of Sadat

Ian Paisley’s decision to make peace with his IRA enemies

His Save Ulster from Sodomy campaign would surely have been supported by many a Sunni imam
'She was a singer, a superstar, an addict, but to me, her mother, she is simply Amy'

'She was a singer, a superstar, an addict, but to me, her mother, she is simply Amy'

Exclusive extract from Janis Winehouse's poignant new memoir
Is this the role to win Cumberbatch an Oscar?

Is this the role to win Cumberbatch an Oscar?

The Imitation Game, film review
England and Roy Hodgson take a joint step towards redemption in Basel

England and Hodgson take a joint step towards redemption

Welbeck double puts England on the road to Euro 2016
Relatives fight over Vivian Maier’s rare photos

Relatives fight over Vivian Maier’s rare photos

Pictures removed from public view as courts decide ownership
‘Fashion has to be fun. It’s a big business, not a cure for cancer’

‘Fashion has to be fun. It’s a big business, not a cure for cancer’

Donatella Versace at New York Fashion Week