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




Subscribe to our free daily newsletters



EXO WORLDS
Light From An Ultra-Cool Neighbor
by Staff Writers
Washington DC (SPX) Mar 13, 2017


Image courtesy NASA Ames/G. Barentsen. Watch the animation here.

This animation shows the amount of light detected by each pixel in a small section of the camera onboard NASA's Kepler space telescope. The light collected from TRAPPIST-1, an ultra-cool dwarf star approximately 40 light-years from Earth, is at the center of the image. Not directly visible in the movie are the seven Earth-size planets that orbit TRAPPIST-1.

Kepler detects a change in brightness when a planet passes in front of a star from the vantage point of the telescope. Transiting planets block a tiny fraction of starlight that produces miniscule dips in the brightness of their host star. An Earth-size planet passing in front of a small ultra-cool dwarf star like TRAPPIST-1 creates less than a one percent dip in brightness, and is not visible with the naked eye.

Astronomers use sophisticated algorithms to search the data for these dips in brightness, and in particular, to correct for the spacecraft's small movements in space-this is the 'flickering' of the pixels seen in the movie.

During the period of Dec. 15, 2016 and March 4, the Kepler spacecraft, operating as the K2 mission, observed TRAPPIST-1 for 74 days. This animation shows 60 brightness measurements or photos taken by Kepler's onboard camera once a minute for an hour on February 22. Called a target pixel file, the image covers an area of 11 square pixels or 44 square arcseconds of the sky. This area is equivalent in size to holding up a grain of sand at arms length towards the sky.

EXO WORLDS
Kepler Provides Another Peek at Ultra-cool Neighbor
Pasadena CA (JPL) Mar 09, 2017
On Feb. 22, astronomers announced that the ultra-cool dwarf star, TRAPPIST-1, hosts a total of seven Earth-size planets that are likely rocky, a discovery made by NASA's Spitzer Space Telescope in combination with ground-based telescopes. NASA's planet-hunting Kepler space telescope also has been observing this star since December 2016. Today these additional data about TRAPPIST-1 from Kepler ar ... read more

Related Links
Exo Planets at NASA
Lands Beyond Beyond - extra solar planets - news and science
Life Beyond Earth


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 on this article 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
Lonely Out in Space: Congressional Move to Scrap NASA-Russia Ties 'Unrealistic'

New Plant Habitat Will Increase Harvest on International Space Station

Keeping Liquids Off the Wall

Space Tourism and Business Looking Up

EXO WORLDS
Designing new rocket engines that don't blow up

Space squadron supports record-breaking satellites launch

Europe launches fourth Earth monitoring satellite

Elon Musk: tech dreamer reaching for sun, moon and stars

EXO WORLDS
Opportunity Driving South to Gully

Paleolake deposits on Mars might look like sediments in Indonesia

NASA Mars Orbiter Tracks Back-to-Back Regional Storms

New evidence for a water-rich history on Mars

EXO WORLDS
China Plans to Launch 1st Probe to Mars in Summer 2020

Long March-7 Y2 ready for launch of China's first cargo spacecraft

China Seeks Space Rockets Launched from Airplanes

China to launch 6-8 latest navigation satellites in 2017

EXO WORLDS
UK funding space entrepreneurs

ISRO Makes More Space for Private Sector Participation in Satellite Making

Kuwait Space Agency - a pipedream or reality

How low can you go? New project to bring satellites nearer to Earth

EXO WORLDS
Orbiting in sunshine

U.S. Naval Research Lab develops light, transparent armor

Cancer-Causing Radiation Biggest Threat to Humans on Deep Space Missions

Mikros contracted for U.S. Navy radar support systems

EXO WORLDS
Kepler Provides Another Peek at Ultra-cool Neighbor

Hunting for giant planet analogs in our own backyard

Faraway Planet Systems Are Shaped Like the Solar System

Biochemical 'fossil' shows how life may have emerged without phosphate

EXO WORLDS
Juno Captures Jupiter Cloudscape in High Resolution

NASA Mission Named 'Europa Clipper'

Juno to remain in current orbit at Jupiter

Europa Flyby Mission Moves into Design Phase




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