Subscribe to our free daily newsletters
. 24/7 Space News .




Subscribe to our free daily newsletters



STELLAR CHEMISTRY
Scientists still confounded by Milky Way's most mysterious star
by Brooks Hays
Washington (UPI) Oct 4, 2017


Tabby's Star continues to confound astronomers. New analysis shows the Milky Way's 'most mysterious star' has experienced brief periods of brightening amid its prolonged dimming.

The star, officially titled KIC 8462852, and sometimes called Boyajian's Star, first caught astronomers attention in 2015. While monitoring the F-type main-sequence star, NASA's Kepler Space Telescope captured a series of rapid dimming events.

When researchers analyzed archival observation of the star, they found Tabby's Star has been gradually dimming for some time. Astronomers came up with a variety of explanations for the dimming episodes, including periodic transits by exoplanets or dust clouds.

However, a more recent survey of 11 years of KIC 8462852 observations revealed two brief brightening stints, further complicating the stellar mystery.

When Josh Simon and Benjamin Shappee, a pair of astronomers with Carnegie Science, looked at data from a pair detailed sky surveys, they found Tabby's Star experienced two brightening events between 2013 and 2015.

"Up until this work, we had thought that the star's changes in brightness were only occurring in one direction -- dimming," Simon explained. "The realization that the star sometimes gets brighter in addition to periods of dimming is incompatible with most hypotheses to explain its weird behavior."

Simon and his colleagues shared their findings online this week.

"An important next step will be to determine how the color of the star changes with time, especially during its brief dips in brightness," said Shappee. "That information would help narrow down the possible explanations for why this star is doing such strange things."

To solve the mystery of Tabby's star's dimming and brightening, astronomers are now turning their attention to other measurable changes, like color shifts. A gas cloud transit would alter the color of the star's light, while a solid object, like a planet, wouldn't inspire a spectral shift.

"We haven't solved the mystery yet," Simon said. "But understanding the star's long-term changes is a key piece of the puzzle."

STELLAR CHEMISTRY
Astronomers detect Freon-40 around infant stars, comet
Washington (UPI) Oct 1, 2017
With the help of a powerful telescope and space probe, astronomers have detected traces of methyl chloride, or Freon-40, surrounding infant stars and the comet 67P/Churyumov-Gerasimenko. Freon-40, also known as chloromethane, belongs to a class of molecules called organohalogens. The radio telescopes at the ALMA observatory in Chile are the first to detect an organohalogen in interstell ... read more

Related Links
Stellar Chemistry, The Universe And All Within It


Thanks for being here;
We need your help. The SpaceDaily news network continues to grow but revenues have never been harder to maintain.

With the rise of Ad Blockers, and Facebook - our traditional revenue sources via quality network advertising continues to decline. And unlike so many other news sites, we don't have a paywall - with those annoying usernames and passwords.

Our news coverage takes time and effort to publish 365 days a year.

If you find our news sites informative and useful then please consider becoming a regular supporter or for now make a one off contribution.

SpaceDaily Contributor
$5 Billed Once


credit card or paypal
SpaceDaily Monthly Supporter
$5 Billed Monthly


paypal only

Comment using your Disqus, Facebook, Google or Twitter login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle

STELLAR CHEMISTRY
Fast-moving space industries create new ethical challenges

OECD calls for tourism to be more sustainable

Space Cooperation Between China, Russia Needs Long-Term Mechanism

NASA's New Hubble E-Book Series Dives into the Solar System and Beyond

STELLAR CHEMISTRY
mu Space partners with Blue Origin to launch geostationary satellite

Arianespace to launch COSMO-SkyMed satellites manufactured by Thales

New Zealand opens first rocket launch site

Arianespace signs contract for 10 Vega and Vega C launchers

STELLAR CHEMISTRY
Lockheed Martin Reveals New Details to its Mars Base Camp Vision

Lockheed Martin unveils reusable water-powered Mars lander

Methane belches kept water flowing on ancient Mars

SpaceX's Musk unveils plan to reach Mars by 2022

STELLAR CHEMISTRY
UN official commends China's role in space cooperation

Mars probe to carry 13 types of payload on 2020 mission

China's cargo spacecraft separates from Tiangong-2 space lab

Work on China's mission to Mars 'well underway'

STELLAR CHEMISTRY
L-Band Satellite Operators Need To Reposition

GomSpace and Luxembourg to develop space activities in the Grand Duchy

Spacepath Communications Acquires Tango Wave

Brodeur Partners Launches Entrepreneurial Space Group

STELLAR CHEMISTRY
Sputnik, the tiny sphere that launched the space race

New laser sensor could detect explosives, dangerous gases more quickly

Germany-based Hensoldt acquires Kelvin Hughes

UV-irradiated amorphous ice behaves like liquid at low temperatures

STELLAR CHEMISTRY
Glenn Tests Thruster Bound for Metal World

Searching for Distant Worlds With a Flying Telescope

MATISSE to Shed Light on the Formation of Earth and Planets

Meteors splashing into warm ponds sparked life on Earth

STELLAR CHEMISTRY
Helicopter test for Jupiter icy moons radar

Solving the Mystery of Pluto's Giant Blades of Ice

Global Aerospace Corporation to present Pluto lander concept to NASA

Pluto features given first official names




Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News






The content herein, unless otherwise known to be public domain, are Copyright 1995-2017 - Space Media Network. All websites are published in Australia and are solely subject to Australian law and governed by Fair Use principals for news reporting and research purposes. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA news reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. All articles labeled "by Staff Writers" include reports supplied to Space Media Network by industry news wires, PR agencies, corporate press officers and the like. Such articles are individually curated and edited by Space Media Network staff on the basis of the report's information value to our industry and professional readership. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement