econintersect.com
       
  

FREE NEWSLETTER: Econintersect sends a nightly newsletter highlighting news events of the day, and providing a summary of new articles posted on the website. Econintersect will not sell or pass your email address to others per our privacy policy. You can cancel this subscription at any time by selecting the unsubscribing link in the footer of each email.



posted on 03 November 2015

Infographic Of The Day: How Do You Spot An Alien Planet From Earth?

Here are some methods that scientists have used to tease out information about distant exoplanets.

Ways to Discover Alien Planets

Transit method: As a planet eclipses its star as seen from Earth, the intensity of starlight drops measurably. Example: NASA's Kepler Spacecraft Finds 1st Alien Planet of New Mission

Pros: Possible to monitor many stars at once from a single instrument. Yields mass and radius of planets.

Cons: Only usable where planet’s orbit brings it across the star’s disc as seen from Earth. Also, up to 40 percent risk of false positives.

Radial velocity method: A massive planet’s gravity will cause its star to “wobble,” resulting in blue-shifted light when the star is tugged toward Earth and red-shifted light when tugged away. Example: 'Super-Earth' Alien Planet May Be Habitable for Life

Pros: Yields minimum mass and orbital inclination of planets.

Cons: Reliable only out to about 160 light-years from Earth for low-mass planets. Impossible to monitor many stars at once from a single instrument. Not usable when planet’s orbit is highly inclined relative to Earth.

Gravitational microlensing method: A chance alignment of a nearby star (with planet) and a distant star causes the near star's gravity to act like a lens, bending and concentrating the far star's light. Seen from Earth, the near star's planet shows up as an additional increase in brightness as the planet's gravity also temporarily lenses the far star's light. Example: Newfound Alien Planet Is One of the Farthest Ever Detected

Pros: Currently, the only method of detecting exoplanets at distances of tens of thousands of light-years from Earth. Possible to monitor many stars at once from a single instrument.

Cons: Planets observed by this method will not be seen again because microlensing events cannot be repeated.

[click here to enlarge infographic]

Methods of detecting exoplanets.
Source SPACE.com: All about our solar system, outer space and exploration.

Source: http://www.space.com/30240-alien-planets-exoplanet-search-methods-infographic.html

Click here for Historical Infographic Post Listing



>>>>> Scroll down to view and make comments <<<<<<










Make a Comment

Econintersect wants your comments, data and opinion on the articles posted.  As the internet is a "war zone" of trolls, hackers and spammers - Econintersect must balance its defences against ease of commenting.  We have joined with Livefyre to manage our comment streams.

To comment, using Livefyre just click the "Sign In" button at the top-left corner of the comment box below. You can create a commenting account using your favorite social network such as Twitter, Facebook, Google+, LinkedIn or Open ID - or open a Livefyre account using your email address.



You can also comment using Facebook directly using he comment block below.





Econintersect Infographics


search_box

Print this page or create a PDF file of this page
Print Friendly and PDF


The growing use of ad blocking software is creating a shortfall in covering our fixed expenses. Please consider a donation to Econintersect to allow continuing output of quality and balanced financial and economic news and analysis.


Take a look at what is going on inside of Econintersect.com
Main Home
Analysis Blog
Many (But Not All) Dynamics Improving But Federal Tax Receipts Are Down
The Economic Future of The Berkshires - A Reconsideration
News Blog
Sherlock Holmes And The Strange Case Of Anti-intellectualism
Average Gasoline Prices for Week Ending 16 January 2017 Fell Almost 3 cents
What We Read Today 17 January 2017
Massive Alligator Shocks Tourists As He Nonchalantly Strolls By On Walking Path
January 2017 Empire State Manufacturing Index Declined But Remains In Expansion.
After A Lackluster Outturn In 2016, Economic Activity Is Projected To Pick Up Pace In 2017 And 2018
Invading China, One Trade Dispute At A Time
Credit Market Arbitrage And Regulatory Leverage
Infographic Of The Day: The Trump Effect On Currencies
Early Headlines: Asia Stocks Mixed, Oil And Dollar Steady, Robots Are Coming, Trump Vows Ins. For All, May Goes For Hard Brexit, China Wants To Build US Infrastructure And More
January 16, 2017 Weather and Climate Report - Split Personality on Steroids
The World's Staggering Wealth Divide
FIFA World Cup Brand Worth More Than Ever
Investing Blog
Investing.com Technical Summary 17 January 2017
Apple Takes The Wireless Headphone Market By Storm
Opinion Blog
Be Prepared For A Violent Fed Reversal
Nature Of Debt Differs Between China, Japan And The U.S.
Precious Metals Blog
Gold's 2016 Gain Indicates A 19% Surge In 2017
Live Markets
17Jan2017 Market Close: Wall Street Closes Lower As Trump Rally Looses Steam, Gold Gains, US Dollar Slips And Crude Prices Can't Hold On To Higher Numbers
Amazon Books & More






.... and keep up with economic news using our dynamic economic newspapers with the largest international coverage on the internet
Asia / Pacific
Europe
Middle East / Africa
Americas
USA Government





























 navigate econintersect.com

Blogs

Analysis Blog
News Blog
Investing Blog
Opinion Blog
Precious Metals Blog
Markets Blog
Video of the Day
Weather

Newspapers

Asia / Pacific
Europe
Middle East / Africa
Americas
USA Government
     

RSS Feeds / Social Media

Combined Econintersect Feed
Google+
Facebook
Twitter
Digg

Free Newsletter

Marketplace - Books & More

Economic Forecast

Content Contribution

Contact

About

  Top Economics Site

Investing.com Contributor TalkMarkets Contributor Finance Blogs Free PageRank Checker Active Search Results Google+

This Web Page by Steven Hansen ---- Copyright 2010 - 2017 Econintersect LLC - all rights reserved