. Military Space News .
EXO WORLDS
Astronomers think 'winking' star is consuming cloud of planetary debris
by Brooks Hays
Washington (UPI) Dec 22, 2017


New data suggests a unique 'winking' star located 550 light-years from Earth is consuming remnants of wrecked planets.

Astronomers believe the periodic dimming of RZ Piscium, a star found in the constellation Pisces, is caused by a giant orbiting cloud of dust formed by the debris of one or more disintegrating planets.

Normally, the large discs of dust and debris found around young stars disperse after a few million years. But RZ Piscium is between 30 million and 50 million years old and the dimming episodes persist, sometimes last a couple of days.

"I've been studying young stars near Earth for 20 years and I've never seen anything like this one," Benjamin Zuckerman, a professor of astronomy at UCLA, said in a news release. "Most sun-like stars have lost their planet-forming disks within a few million years of their birth. The fact that RZ Piscium hosts so much gas and dust after tens of millions of years means it's probably destroying, rather than building, planets."

RZ Piscium produces larger amounts of infrared radiation than the sun, which suggests the star is surrounded by a warm ring of dust. Roughly 8 percent of the star's radiation is emitted in the form of infrared wavelengths, putting the star in rare company. Only a handful of other stars within a few hundred light-years of the solar system emit similar amount of infrared radiation.

Scientists detailed their analysis of RZ Piscium in the Astronomical Journal.

"Our observations show there are massive blobs of dust and gas that occasionally block the star's light and are probably spiraling into it," said Kristina Punzi, a doctoral student at the Rochester Institute of Technology.

Spectral analysis revealed the star's lithium levels, which allowed scientists estimate the star's age. Analysis also revealed the star's surface temperature, 9,600 degrees Fahrenheit, just a bit cooler than the sun. Scientists were also able to measure the temperature of the dust, 450 degrees Fahrenheit, which suggests the cloud is orbiting 30 million miles from the star.

While astronomers believe planetary collisions are the most likely source of the dust cloud surrounding RZ Piscium, they suggest it's also possible the star is stealing material from a stellar companion.

EXO WORLDS
A New Approach for Detecting Planets in the Alpha Centauri System
New Haven CT (SPX) Dec 20, 2017
Yale astronomers have taken a fresh look at the nearby Alpha Centauri star system and found new ways to narrow the search for habitable planets there. According to a study led by Professor Debra Fischer and graduate student Lily Zhao, there may be small, Earth-like planets in Alpha Centauri that have been overlooked. Meanwhile, the study ruled out the existence of a number of larger planet ... read more

Related Links
Lands Beyond Beyond - extra solar planets - news and science
Life Beyond Earth


Thanks for being here;
We need your help. The Space Media 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.
SpaceMediaNetwork Contributor
$5 Billed Once


credit card or paypal
SpaceMediaNetwork 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

EXO WORLDS
Lockheed Martin to support AEGIS system for Japanese self defense forces

Pentagon works to 'understand' missile strike on Saudi

Saudi says it intercepted Yemen rebel missile over Riyadh

Japan to beef up missile defence system against N. Korea

EXO WORLDS
Russia finalises S-400 missile system deal with Turkey

Raytheon contracted to support anti-ship missile system

Is Iran really arming Yemen's Huthi rebels?

Iran supplied ballistic missile to Yemen rebels: US

EXO WORLDS
Boeing unveils entry in unmanned aerial tanker competition for the Navy

Insitu to support Navy's ScanEagle UAV system

Dutch police ground drone-fighting eagles

Jet-powered drone tested by BAE Systems

EXO WORLDS
Military defense market faces new challenges to acquiring SatCom platforms

Harris contracted by Army for radios for security force assistance brigades

Joint Hellas-Sat-4 and SaudiGeoSat-1 satellite ready for environmental tests

Government outsourcing disrupts space as SatComm services commercialised

EXO WORLDS
Saab producing artillery training rounds for unidentified client

Navy taps ManTech for engineering and technical services

Raytheon finishes first lot production of new small diameter bomb

Leonardo banners sales of Linaps artillery aiming systems

EXO WORLDS
Raytheon to support inventory management for Army

Department of Defense seeks to speed up acquisition process

EU launches defence pact with submarine drones

Dutch want arms dealer's extradition after S.Africa arrest

EXO WORLDS
India, China to hold talks on disputed borders: official

China dismisses 'hype' over S. China Sea military buildup

Japan unveils record defence budget against N. Korea threat

Trump sends mixed message with 'America First' security strategy

EXO WORLDS
A 100-fold leap to GigaDalton DNA nanotech

Discovery sets new world standard in nano generators

New nanowires are just a few atoms thick

Physicists explain metallic conductivity of thin carbon nanotube films









The content herein, unless otherwise known to be public domain, are Copyright 1995-2024 - 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. General Data Protection Regulation (GDPR) Statement Our advertisers use various cookies and the like to deliver the best ad banner available at one time. All network advertising suppliers have GDPR policies (Legitimate Interest) that conform with EU regulations for data collection. By using our websites you consent to cookie based advertising. If you do not agree with this then you must stop using the websites from May 25, 2018. Privacy Statement. Additional information can be found here at About Us.