The Milky Way's magnetic fingerprint could help reveal the history of the universe

The image was compiled using data collected by the Planck mission

The European Space Agency (ESA) has released a new image from the Planck telescope, which at first glance could easily be mistaken for a frothy swirl in a coffee cup, but in fact depicts the Milky Way’s magnetic field lines, and could help astronomers understand the history of the universe.

Launched in 2009, Planck mapped the sky using two state-of-the-art instruments.

Although the mission ended last year, scientists are still analysing the data Planck collected, and hope that it will enable them to piece together how stars are formed.

To create the image, astronomers compiled information from the first all-sky observation of polarised light emitted by interstellar dust in the Milky Way, using a technique called line integral convolution.

Planck collected this data by acting like an astronomical pair of polarised sunglasses.

While the electromagnetic waves that make-up light usually vibrate in directions at right angles to each other and where they are travelling, if this is distrurbed the light becomes “polarised”. This can happen, for example, when light bounces off a reflective surface like a mirror or the sea.

The finger-print-like swirls and arcs in the new ESA image trace the structure of the magnetic field in our home galaxy.

The Milly Way's magnetic fingerprint The Milly Way's magnetic fingerprint
The dark line running horizontally across the centre corresponds to the galactic plane – where the majority of the galaxy’s mass lies.

Tangles which dot the image reveal the variations of polarisation within nearby clouds of gas and dust, showing that the local magnetic field is particularly disorganised.

Surrounding the galactic plane are the darker, more turbulent-looking patches which, indicate strong polarised emissions, while the furrows show the direction of the magnetic field projected on the plane of the sky.

Scientists hope the data will enable them to investigate the early history of the cosmos, from the when the Universe was less than one second old to the period when the first stars were born, several hundred million years later.

Their findings on galactic polarization data have been published in four papers, recently submitted to the journal Astronomy & Astrophysics.

“This is the best picture we've ever had of the magnetic field in the Milky Way over such a large part of the sky,” said Charles Lawrence, the US Planck project scientist for the mission at NASA's Jet Propulsion Laboratory, California.

Start your day with The Independent, sign up for daily news emails
PROMOTED VIDEO
Life and Style
life
Arts and Entertainment
Cold case: Aaron McCusker and Christopher Eccleston in ‘Fortitude’
tvReview: Sky Atlantic's ambitious new series Fortitude has begun with a feature-length special
Voices
Three people wearing masks depicting Ed Miliband, David Cameron and Nick Clegg
voicesPolitics is in the gutter – but there is an alternative, says Nigel Farage
Voices
The veterans Mark Hayward, Hugh Thompson and Sean Staines (back) with Grayson Perry (front left) and Evgeny Lebedev
charity appealMaverick artist Grayson Perry backs our campaign
News
i100
News
people
ebooks
ebooksA special investigation by Andy McSmith
Sport
Chelsea manager Jose Mourinho
footballThe more Jose Mourinho attempts to influence match officials, the more they are likely to ignore him
Life and Style
Vote green: Benoit Berenger at The Duke of Cambridge in London's Islington
food + drinkBanishes thoughts of soggy school dinners and turn over a new leaf
News
Joel Grey (left) poses next to a poster featuring his character in the film
peopleActor Joel Grey comes out at 82
News
i100
News
business
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

Ashdown Group: Marketing & Sales Manager

£40000 per annum: Ashdown Group: A reputable organisation within the leisure i...

Tradewind Recruitment: Science Teacher

£90 - £140 per day: Tradewind Recruitment: I am currently working in partnersh...

Recruitment Genius: Doctors - Dubai - High "Tax Free" Earnings

£96000 - £200000 per annum: Recruitment Genius: Looking for a better earning p...

Recruitment Genius: PHP Developer

£32000 - £36000 per annum: Recruitment Genius: A rapidly expanding company in ...

Day In a Page

Isis hostage crisis: The prisoner swap has only one purpose for the militants - recognition its Islamic State exists and that foreign nations acknowledge its power

Isis hostage crisis

The prisoner swap has only one purpose for the militants - recognition its Islamic State exists and that foreign nations acknowledge its power, says Robert Fisk
Missing salvage expert who found $50m of sunken treasure before disappearing, tracked down at last

The runaway buccaneers and the ship full of gold

Salvage expert Tommy Thompson found sunken treasure worth millions. Then he vanished... until now
Homeless Veterans appeal: ‘If you’re hard on the world you are hard on yourself’

Homeless Veterans appeal: ‘If you’re hard on the world you are hard on yourself’

Maverick artist Grayson Perry backs our campaign
Assisted Dying Bill: I want to be able to decide about my own death - I want to have control of my life

Assisted Dying Bill: 'I want control of my life'

This week the Assisted Dying Bill is debated in the Lords. Virginia Ironside, who has already made plans for her own self-deliverance, argues that it's time we allowed people a humane, compassionate death
Move over, kale - cabbage is the new rising star

Cabbage is king again

Sophie Morris banishes thoughts of soggy school dinners and turns over a new leaf
11 best winter skin treats

Give your moisturiser a helping hand: 11 best winter skin treats

Get an extra boost of nourishment from one of these hard-working products
Paul Scholes column: The more Jose Mourinho attempts to influence match officials, the more they are likely to ignore him

Paul Scholes column

The more Jose Mourinho attempts to influence match officials, the more they are likely to ignore him
Frank Warren column: No cigar, but pots of money: here come the Cubans

Frank Warren's Ringside

No cigar, but pots of money: here come the Cubans
Isis hostage crisis: Militant group stands strong as its numerous enemies fail to find a common plan to defeat it

Isis stands strong as its numerous enemies fail to find a common plan to defeat it

The jihadis are being squeezed militarily and economically, but there is no sign of an implosion, says Patrick Cockburn
Virtual reality thrusts viewers into the frontline of global events - and puts film-goers at the heart of the action

Virtual reality: Seeing is believing

Virtual reality thrusts viewers into the frontline of global events - and puts film-goers at the heart of the action
Homeless Veterans appeal: MP says Coalition ‘not doing enough’

Homeless Veterans appeal

MP says Coalition ‘not doing enough’ to help
Larry David, Steve Coogan and other comedians share stories of depression in new documentary

Comedians share stories of depression

The director of the new documentary, Kevin Pollak, tells Jessica Barrett how he got them to talk
Has The Archers lost the plot with it's spicy storylines?

Has The Archers lost the plot?

A growing number of listeners are voicing their discontent over the rural soap's spicy storylines; so loudly that even the BBC's director-general seems worried, says Simon Kelner
English Heritage adds 14 post-war office buildings to its protected lists

14 office buildings added to protected lists

Christopher Beanland explores the underrated appeal of these palaces of pen-pushing
Human skull discovery in Israel proves humans lived side-by-side with Neanderthals

Human skull discovery in Israel proves humans lived side-by-side with Neanderthals

Scientists unearthed the cranial fragments from Manot Cave in West Galilee