cosmic dust not alien megastructure veils mysterious star
Last Updated : GMT 05:17:37
Emiratesvoice, emirates voice
Emiratesvoice, emirates voice
Last Updated : GMT 05:17:37
Emiratesvoice, emirates voice

in an odd way that suggested

Cosmic dust, not 'alien megastructure,' veils mysterious star

Emiratesvoice, emirates voice

Emiratesvoice, emirates voice Cosmic dust, not 'alien megastructure,' veils mysterious star

NASA
Miami - Emiratesvoice

It's been called the "most mysterious star in the universe," bigger than the sun and yet brightening and dimming in an odd way that suggested to some an alien megastructure might be circling it.

But a study out Wednesday, compiled by more than 100 scientists who have been observing the star named KIC 8462852, puts the alien rumors to rest.

"Dust is most likely the reason why the star's light appears to dim and brighten," said lead author Tabetha Boyajian, assistant professor of physics and astronomy at Louisiana State University, for whom "Tabby's Star" is nicknamed.

"The new data shows that different colors of light are being blocked at different intensities. Therefore, whatever is passing between us and the star is not opaque, as would be expected from a planet or alien megastructure."

The initial discovery of the star was made with the help of NASA's planet-hunting space telescope, known as Kepler.

Kepler detects planets by tracking moments when a star's light dims as an object passes in front of it.

The unusual dips in brightness in Tabby's Star -- more than 1,000 light-years away, about 50 percent bigger and 1,000 degrees hotter than the sun -- aroused global interest.

Citizen scientists, known as the Planet Hunters, were the ones who discovered the star's strange behavior, by sifting through massive amounts of data from the NASA Kepler mission.

"If it wasn't for people with an unbiased look on our universe, this unusual star would have been overlooked," Boyajian said.

- New era in astronomy -

More than 1,700 people donated some $100,000 through a Kickstarter campaign to study it further.

Astronomers at the California-based Las Cumbres Observatory watched it closely from March 2016 to December 2017.

"We were hoping that once we finally caught a dip happening in real time, we could see if the dips were the same depth at all wavelengths," said co-author Jason Wright, assistant professor at Pennsylvania State's department of astronomy and astrophysics.

"If they were nearly the same, this would suggest that the cause was something opaque, like an orbiting disk, planet, or star, or even large structures in space."

The team indeed found four episodes when the star's light dipped, beginning in May 2017.

Even though the team has ruled out any massive alien construction as the cause of dimming, "it raises the plausibility of other phenomena being behind the dimming," Wright said.

"There are models involving circumstellar material -- like exocomets, which were Boyajian's team's original hypothesis -- which seem to be consistent with the data we have."

Researchers say the experiment is indicative of a new era in astronomy, in which crowd-sourcing and citizen scientists help fuel new discoveries.

"We're gathering so much data on a single target," said Tyler Ellis, a doctoral candidate at Louisiana State University who was among those studying this star.

"This project is reflective of changes in astronomy with the access to this flood of data."

The report is published in The Astrophysical Journal Letters.

Name *

E-mail *

Comment Title*

Comment *

: Characters Left

Mandatory *

Terms of use

Publishing Terms: Not to offend the author, or to persons or sanctities or attacking religions or divine self. And stay away from sectarian and racial incitement and insults.

I agree with the Terms of Use

Security Code*

cosmic dust not alien megastructure veils mysterious star cosmic dust not alien megastructure veils mysterious star

 



Name *

E-mail *

Comment Title*

Comment *

: Characters Left

Mandatory *

Terms of use

Publishing Terms: Not to offend the author, or to persons or sanctities or attacking religions or divine self. And stay away from sectarian and racial incitement and insults.

I agree with the Terms of Use

Security Code*

cosmic dust not alien megastructure veils mysterious star cosmic dust not alien megastructure veils mysterious star

 



GMT 19:57 2018 Tuesday ,23 January

Farm-fresh from Kerala to the UAE, in just one day

GMT 05:04 2024 Tuesday ,06 February

Skincare PR Performance Full Year 2017

GMT 06:15 2018 Tuesday ,23 January

Volkswagen clinches record sales

GMT 10:08 2018 Wednesday ,24 January

Microsoft to open 4 data centres

GMT 10:18 2018 Thursday ,30 August

Iran incapable of closing Hormuz, Bab Al Mandeb

GMT 06:59 2018 Saturday ,20 January

Egypt's President Sisi says will stand for re-election

GMT 10:02 2017 Wednesday ,08 February

Vatican Row as China Invited to Organ Transplant Meet

GMT 07:47 2017 Thursday ,15 June

Mohammed bin Rashid receives Emirati scientists

GMT 07:14 2017 Tuesday ,03 January

Gambia Authorities Shut Teranga FM Radio Station

GMT 11:40 2016 Saturday ,31 December

Arise 'Sir Andy', 'Sir Mo' as Murray, Farah knighted

GMT 06:49 2017 Wednesday ,10 May

Abdullah bin Zayed receives IRENA's Director

GMT 09:02 2018 Wednesday ,10 January

In Melbourne but injured knee 'fine'

GMT 10:33 2017 Friday ,10 March

White House presses Iran for info on ex-FBI

GMT 07:30 2017 Wednesday ,27 December

Displaced Syrians survive war but face battle

GMT 11:01 2017 Sunday ,05 November

Boom in entrepreneurs expected after ban

GMT 08:45 2017 Wednesday ,06 September

Korea, Saudi reach World Cup, Syria into play-offs

GMT 10:54 2016 Wednesday ,26 October

EU questions budgets of 7 eurozone countries

GMT 20:26 2017 Wednesday ,25 October

US-bound passengers face new security interviews

GMT 02:46 2017 Monday ,24 July

Isner to face qualifier in Newport final

GMT 15:41 2017 Monday ,04 September

Sheikha Fatima bint Mubarak launches volunteering

GMT 23:31 2017 Friday ,22 September

Dubai airline offers 50% discount

GMT 06:39 2017 Thursday ,08 June

Myanmar plane with 104 on board crashes
Emiratesvoice, emirates voice
 
 Emirates Voice Facebook,emirates voice facebook  Emirates Voice Twitter,emirates voice twitter Emirates Voice Rss,emirates voice rss  Emirates Voice Youtube,emirates voice youtube  Emirates Voice Youtube,emirates voice youtube

Maintained and developed by Arabs Today Group SAL.
All rights reserved to Arab Today Media Group 2021 ©

Maintained and developed by Arabs Today Group SAL.
All rights reserved to Arab Today Media Group 2021 ©

emiratesvoieen emiratesvoiceen emiratesvoiceen emiratesvoiceen
emiratesvoice emiratesvoice emiratesvoice
emiratesvoice
بناية النخيل - رأس النبع _ خلف السفارة الفرنسية _بيروت - لبنان
emiratesvoice, Emiratesvoice, Emiratesvoice