Report for www.planetary.org

Overall8.8

The overall score for this website.

Accessibility8.5

How accessible the website is to mobile and disabled users.

The following tests contribute to this score:

Experience8.6

How satisfying the website is likely to be for users.

Marketing9.4

How well marketed and popular the website is.

Technology8.7

How well designed and built the website is.

Screenshot of www.planetary.org

Nibbler tested a sample of 5 pages from this website at 4:08 PM on Sep 16, 2020 (BST).

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Top priorities for website improvement

  • Add meaningful anchor text that describes the link's destination. If the link contains an image, ensure you have provided alt text. (read more)
  • Add printable stylesheets for all pages, wherever possible. In most cases, websites can share printable stylesheets over many or all pages, as with screen-based stylesheets. (read more)
  • Ensure that headings are defined in a semantically correct way, i.e. always start with a H1 tag. This is used to summarise the page content. Further tags (H2, H3, H4 etc) are meant to summarise and partition sections within the content. (read more)

Printability0.0

0% of pages are optimized for printing

Media specific CSS detected

Popularity7.7

154,190 Most popular website in the world

This website recently saw a slight decrease in popularity.

  • This is the 154,190 most popular website in the world.
  • Over the past 3 months, this website has experienced a slight decrease in popularity.
  • This website accounts for 95.8% of the Internet traffic to planetary.org and its subdomains.

Source: Alexa

Headings9.0

advocacy advocate around articles asteroid bill bring campaigns challenge change collaboration core crowdfunding defend defense development doing earth educate education educational efforts enterprise experts exploration featured financially find fund future give global help innovative involved latest lead learn let's life lightsail mission more near-earth other outreach people planetary policy public report research resources results science search society space stories support technologies technology threat together topics vision we're work world worlds

  • All pages were found to use defined headings. This is excellent as it allows visitors and search engines to summarize the content of webpages quickly. Correctly defined headings aid accessibility and are particularly important for search engine optimization.
  • Some pages did not define headings correctly. The H1 tag should be used for the most top-level heading, with H2 being used for sub-headings and H3 for further sub-headings and so-on. Not conforming to this convention may confuse visitors.
    • Ensure that headings are defined in a semantically correct way, i.e. always start with a H1 tag. This is used to summarise the page content. Further tags (H2, H3, H4 etc) are meant to summarise and partition sections within the content.

Page headings detail

URLHeadingLevel
www.planetary.org/Featured StoriesH2
www.planetary.org/The LightSail 2 MissionH2
www.planetary.org/Carl Sagan co-founded The Planetary Society to give you a role in space exploration.H2
www.planetary.org/Sharing and growing the passion, beauty, and joy of space exploration.H2
www.planetary.org/What We DoH3
www.planetary.org/How We WorkH3
www.planetary.org/Our ResultsH3
www.planetary.org/Space TopicsH3
www.planetary.org/LearnH3
www.planetary.org/The Planetary ReportH3
www.planetary.org/Get InvolvedH3
www.planetary.org/GiveH3
www.planetary.org/The Planetary FundH3
www.planetary.org/About UsH3
www.planetary.org/The Planetary SocietyH3
www.planetary.org/Did Scientists Just Find Life on Venus?H3
www.planetary.org/Planetary Society Grant Winner Discovers Large Near-Earth AsteroidH3
www.planetary.org/A Planetary Mystery is Solved, and it’s Bill Nye’s Anniversary!H3
www.planetary.org/Join Our Mission to Defend EarthH3
www.planetary.org/LightSail 2 Enters Extended Mission PhaseH3
www.planetary.org/The LightSail MissionH3
www.planetary.org/Support the MissionH3
www.planetary.org/EducateH3
www.planetary.org/AdvocateH3
www.planetary.org/InnovateH3
www.planetary.org/CollaborateH3
www.planetary.org/"We're changing the world. Are you in?"- CEO Bill NyeH3
www.planetary.org/In Space TogetherH4
www.planetary.org/Our VisionH4
www.planetary.org/Our MissionH4
www.planetary.org/explore-worldsExplore WorldsH1
www.planetary.org/explore-worldsCORE ENTERPRISEH2
www.planetary.org/explore-worldsThe ChallengeH2
www.planetary.org/explore-worldsWhat We're DoingH2
www.planetary.org/explore-worldsLatest Articles on Planetary ExplorationH2
www.planetary.org/explore-worldsEducational ResourcesH2
www.planetary.org/explore-worldsWhat We DoH3
www.planetary.org/explore-worldsHow We WorkH3
www.planetary.org/explore-worldsOur ResultsH3
www.planetary.org/explore-worldsSpace TopicsH3
www.planetary.org/explore-worldsLearnH3
www.planetary.org/explore-worldsThe Planetary ReportH3
www.planetary.org/explore-worldsGet InvolvedH3
www.planetary.org/explore-worldsGiveH3
www.planetary.org/explore-worldsThe Planetary FundH3
www.planetary.org/explore-worldsAbout UsH3
www.planetary.org/explore-worldsThe Planetary SocietyH3
www.planetary.org/explore-worldsEducation and Public OutreachH3
www.planetary.org/explore-worldsPolicy and AdvocacyH3
www.planetary.org/explore-worldsScience and TechnologyH3
www.planetary.org/explore-worldsGlobal CollaborationH3
www.planetary.org/explore-worldsWhat Is A Planet?H3
www.planetary.org/explore-worldsThe Bruce Murray Space Image LibraryH3
www.planetary.org/explore-worldsLet's Change the WorldH3
www.planetary.org/explore-worldsDefend EarthH3
www.planetary.org/explore-worldsIn Space TogetherH4
www.planetary.org/explore-worldsOur VisionH4
www.planetary.org/explore-worldsOur MissionH4
www.planetary.org/explore-worldsWe help more people get excited about space science and exploration.H4
www.planetary.org/explore-worldsWe demonstrate ongoing public support for space exploration, as well as during key moments like when funding for a mission is in jeopardy and when NASA’s budget is being determined.H4
www.planetary.org/explore-worldsWe lead crowdfunding campaigns to financially support space science research and the development of innovative space exploration technologies.H4
www.planetary.org/explore-worldsWe connect with planetary exploration experts from around the world to strengthen our work and support international exploration efforts.H4
www.planetary.org/find-lifeFind LifeH1
www.planetary.org/find-lifeCORE ENTERPRISEH2
www.planetary.org/find-lifeThe ChallengeH2
www.planetary.org/find-lifeWhat We're DoingH2
www.planetary.org/find-lifeLatest Articles on the Search for LifeH2
www.planetary.org/find-lifeEducational ResourcesH2
www.planetary.org/find-lifeWhat We DoH3
www.planetary.org/find-lifeHow We WorkH3
www.planetary.org/find-lifeOur ResultsH3
www.planetary.org/find-lifeSpace TopicsH3
www.planetary.org/find-lifeLearnH3
www.planetary.org/find-lifeThe Planetary ReportH3
www.planetary.org/find-lifeGet InvolvedH3
www.planetary.org/find-lifeGiveH3
www.planetary.org/find-lifeThe Planetary FundH3
www.planetary.org/find-lifeAbout UsH3
www.planetary.org/find-lifeThe Planetary SocietyH3
www.planetary.org/find-lifeEducation and OutreachH3
www.planetary.org/find-lifeSpace Policy and AdvocacyH3
www.planetary.org/find-lifeScience and TechnologyH3
www.planetary.org/find-lifeGlobal CollaborationH3
www.planetary.org/find-lifeSETI, the Search for Extraterrestrial IntelligenceH3
www.planetary.org/find-lifeLet's Change the WorldH3
www.planetary.org/find-lifeDefend EarthH3
www.planetary.org/find-lifeIn Space TogetherH4
www.planetary.org/find-lifeOur VisionH4
www.planetary.org/find-lifeOur MissionH4
www.planetary.org/find-lifeWe build public support by teaching people about the search for life and encouraging excitement about new developments and future possibilities.H4
www.planetary.org/find-lifeWe advocate for space missions and policies that promote the search for other life in the cosmos. H4
www.planetary.org/find-lifeWe lead crowdfunding campaigns to financially support the development of innovative research and technologies.H4
www.planetary.org/find-lifeWe bring advocates and experts together from around the world to elevate the search for life as a space exploration priority.H4
www.planetary.org/defend-earthDefend EarthH1
www.planetary.org/defend-earthCORE ENTERPRISEH2
www.planetary.org/defend-earthThe ChallengeH2
www.planetary.org/defend-earthWhat We're DoingH2
www.planetary.org/defend-earthLatest Articles on Planetary DefenseH2
www.planetary.org/defend-earthEducational ResourcesH2
www.planetary.org/defend-earthWhat We DoH3
www.planetary.org/defend-earthHow We WorkH3
www.planetary.org/defend-earthOur ResultsH3
www.planetary.org/defend-earthSpace TopicsH3
www.planetary.org/defend-earthLearnH3
www.planetary.org/defend-earthThe Planetary ReportH3
www.planetary.org/defend-earthGet InvolvedH3
www.planetary.org/defend-earthGiveH3
www.planetary.org/defend-earthThe Planetary FundH3
www.planetary.org/defend-earthAbout UsH3
www.planetary.org/defend-earthThe Planetary SocietyH3
www.planetary.org/defend-earthBecome a Planetary DefenderH3
www.planetary.org/defend-earthEducation and OutreachH3
www.planetary.org/defend-earthPolicy and AdvocacyH3
www.planetary.org/defend-earthScience and TechnologyH3
www.planetary.org/defend-earthGlobal CollaborationH3
www.planetary.org/defend-earthWill an Asteroid Hit Earth? Your Questions Answered.H3
www.planetary.org/defend-earthMeet the Planetary Society’s Newest Asteroid HuntersH3
www.planetary.org/defend-earthAsteroids, Comets, and Other Small WorldsH3
www.planetary.org/defend-earthThe Biggest Little Asteroid ObservatoryH3
www.planetary.org/defend-earthLet's Change the WorldH3
www.planetary.org/defend-earthDefend EarthH3
www.planetary.org/defend-earthIn Space TogetherH4
www.planetary.org/defend-earthOur VisionH4
www.planetary.org/defend-earthOur MissionH4
www.planetary.org/defend-earthWe help more people understand the reality of the danger and the importance of protecting the Earth from asteroids, and we help them share this knowledge with family and friends.H4
www.planetary.org/defend-earthWe help more people communicate with their representatives in government about the preventable asteroid threat, and we help keep policymakers informed of the current state of planetary defense.H4
www.planetary.org/defend-earthWe directly support research and development projects for planetary defense through crowdfunding. Our members and supporters contribute directly to efforts to find, track, characterize, and deflect near-Earth objects.H4
www.planetary.org/defend-earthWe bring planetary defense experts together from around the world to work on advancing solutions to the asteroid threat.H4
www.planetary.org/outreachEducation & Public OutreachH1
www.planetary.org/outreachHOW WE WORKH2
www.planetary.org/outreachOur ApproachH2
www.planetary.org/outreachOur ResultsH2
www.planetary.org/outreachHow You Can HelpH2
www.planetary.org/outreachFeatured ProjectsH2
www.planetary.org/outreachLatest ArticlesH2
www.planetary.org/outreachWhat We DoH3
www.planetary.org/outreachHow We WorkH3
www.planetary.org/outreachOur ResultsH3
www.planetary.org/outreachSpace TopicsH3
www.planetary.org/outreachLearnH3
www.planetary.org/outreachThe Planetary ReportH3
www.planetary.org/outreachGet InvolvedH3
www.planetary.org/outreachGiveH3
www.planetary.org/outreachThe Planetary FundH3
www.planetary.org/outreachAbout UsH3
www.planetary.org/outreachThe Planetary SocietyH3
www.planetary.org/outreachWe believe the future of space exploration depends on public support and participation.H3
www.planetary.org/outreachThe Planetary Society's Education and Public Outreach program:H3
www.planetary.org/outreachTake ActionH3
www.planetary.org/outreachEducate YourselfH3
www.planetary.org/outreachStay InformedH3
www.planetary.org/outreachPerseverance Rover Mastcam-Z StoriesH3
www.planetary.org/outreachPlanetary RadioH3
www.planetary.org/outreachThe Planetary ReportH3
www.planetary.org/outreachVideosH3
www.planetary.org/outreachSpace for KidsH3
www.planetary.org/outreachMessages from EarthH3
www.planetary.org/outreachLet's Change the WorldH3
www.planetary.org/outreachDefend EarthH3
www.planetary.org/outreachIn Space TogetherH4
www.planetary.org/outreachOur VisionH4
www.planetary.org/outreachOur MissionH4

Amount of content9.6

Rendering Chart...

  • This website has an average of 1,031 words per page. The amount of content on a website has been shown to correlate with its search engine ranking.

Twitter10.0

This website is linked with the Twitter account @exploreplanets

This website's Twitter account has
225,521 followers

  • This website was found to link the Twitter account Planetary Society (@exploreplanets).
  • This website's Twitter account has made 17,231 tweets to 225,521 followers.

Source: Twitter

Mobile10.0

Mobile screenshot of www.planetary.orgTablet screenshot of www.planetary.org
  • All of this website appears to be optimised for viewing on a mobile phone or a tablet.

Media specific CSS detected

Server behavior10.0

Yes404 page

YesCompression

  • This website handles missing pages correctly by sending a 404 HTTP status code.
  • This website was served with GZIP encoding. This is very good because it reduces the loading time of a web page.
  • This website follows the best practice of using a permanent (HTTP 301) redirect between URLs with/without trailing slashes. This is ideal.
  • This website follows the best practice of using a permanent (HTTP 301) redirect from http://planetary.org to http://www.planetary.org. This is ideal.

Analytics10.0

100% of pages use analytics

Google AnalyticsGoogle Analytics

  • Every page in this website is using Google Analytics. This is excellent and should allow for a complete analysis of visitor behavior.

Page titles10.0

100% of pages have defined titles

0% of page titles are weak

  • All pages were found to use page titles appropriately. Page titles appear in search results and at the top of the browser's window when visiting the site. Appropriate page titles are particularly important for search engine optimization.

Images10.0

0% of images have a clearly defined size

No images are being resized by the browser

Meta tags10.0

This is how this website will look in Google search listings:

The Planetary Society

www.planetary.org/

The Planetary Society is the largest and most effective nonprofit organization that promotes the exploration of space through education, advocacy, and…

  • All pages were found to include a meta description. This is good because search engines (like Google) show this text in search result pages.

Meta Tags (name attribute)

Page URLNameContent
www.planetary.org/viewportwidth=device-width,minimum-scale=1
www.planetary.org/apple-mobile-web-app-capableyes
www.planetary.org/apple-mobile-web-app-status-bar-styleblack-translucent
www.planetary.org/apple-mobile-web-app-titledevmode
www.planetary.org/msapplication-tilecolor#FFFFFF
www.planetary.org/msapplication-tileimage/img/site/mstile-144x144.png
www.planetary.org/msapplication-config/img/site/browserconfig.xml
www.planetary.org/descriptionThe Planetary Society is the largest and most effective nonprofit organization that promotes the exploration of space through education, advocacy, and…
www.planetary.org/referrerno-referrer-when-downgrade
www.planetary.org/robotsall
www.planetary.org/twitter:cardsummary_large_image
www.planetary.org/twitter:site@exploreplanets
www.planetary.org/twitter:creator@exploreplanets
www.planetary.org/twitter:titleThe Planetary Society
www.planetary.org/twitter:descriptionThe Planetary Society is the largest and most effective nonprofit organization that promotes the exploration of space through education, advocacy, and innovative projects.
www.planetary.org/twitter:imagehttps://planetary.s3.amazonaws.com/web/assets/pictures/_800x418_crop_center-center_82_none/TPS-logo.png?mtime=1549488912
www.planetary.org/twitter:image:width800
www.planetary.org/twitter:image:height418
www.planetary.org/twitter:image:altThe Planetary Society logo
www.planetary.org/explore-worldsviewportwidth=device-width,minimum-scale=1
www.planetary.org/explore-worldsapple-mobile-web-app-capableyes
www.planetary.org/explore-worldsapple-mobile-web-app-status-bar-styleblack-translucent
www.planetary.org/explore-worldsapple-mobile-web-app-titledevmode
www.planetary.org/explore-worldsmsapplication-tilecolor#FFFFFF
www.planetary.org/explore-worldsmsapplication-tileimage/img/site/mstile-144x144.png
www.planetary.org/explore-worldsmsapplication-config/img/site/browserconfig.xml
www.planetary.org/explore-worldsdescriptionHow The Planetary Society works to increase discoveries about the worlds of our solar system and beyond.
www.planetary.org/explore-worldsreferrerno-referrer-when-downgrade
www.planetary.org/explore-worldsrobotsall
www.planetary.org/explore-worldstwitter:cardsummary_large_image
www.planetary.org/explore-worldstwitter:site@exploreplanets
www.planetary.org/explore-worldstwitter:creator@exploreplanets
www.planetary.org/explore-worldstwitter:titleExplore Worlds
www.planetary.org/explore-worldstwitter:descriptionHow The Planetary Society works to increase discoveries about the worlds of our solar system and beyond.
www.planetary.org/explore-worldstwitter:imagehttps://planetary.s3.amazonaws.com/web/assets/pictures/_1200x630_crop_center-center_82_none/VGER-40-JUPITER-BLOG__Figure_C.jpg?mtime=1586201231
www.planetary.org/explore-worldstwitter:image:width800
www.planetary.org/explore-worldstwitter:image:height418
www.planetary.org/explore-worldstwitter:image:altIo above Jupiter with shadow below
www.planetary.org/find-lifeviewportwidth=device-width,minimum-scale=1
www.planetary.org/find-lifeapple-mobile-web-app-capableyes
www.planetary.org/find-lifeapple-mobile-web-app-status-bar-styleblack-translucent
www.planetary.org/find-lifeapple-mobile-web-app-titledevmode
www.planetary.org/find-lifemsapplication-tilecolor#FFFFFF
www.planetary.org/find-lifemsapplication-tileimage/img/site/mstile-144x144.png
www.planetary.org/find-lifemsapplication-config/img/site/browserconfig.xml
www.planetary.org/find-lifedescriptionHow The Planetary Society works to elevate the search for life as a space exploration priority.
www.planetary.org/find-lifereferrerno-referrer-when-downgrade
www.planetary.org/find-liferobotsall
www.planetary.org/find-lifetwitter:cardsummary_large_image
www.planetary.org/find-lifetwitter:site@exploreplanets
www.planetary.org/find-lifetwitter:creator@exploreplanets
www.planetary.org/find-lifetwitter:titleFind Life
www.planetary.org/find-lifetwitter:descriptionHow The Planetary Society works to elevate the search for life as a space exploration priority.
www.planetary.org/find-lifetwitter:imagehttps://planetary.s3.amazonaws.com/web/assets/pictures/_1200x630_crop_center-center_82_none/20130121_eso0932a_milky_way.jpg?mtime=1585766837
www.planetary.org/find-lifetwitter:image:width800
www.planetary.org/find-lifetwitter:image:height418
www.planetary.org/find-lifetwitter:image:altThe entire sky, projected with the Milky Way at center
www.planetary.org/defend-earthviewportwidth=device-width,minimum-scale=1
www.planetary.org/defend-earthapple-mobile-web-app-capableyes
www.planetary.org/defend-earthapple-mobile-web-app-status-bar-styleblack-translucent
www.planetary.org/defend-earthapple-mobile-web-app-titledevmode
www.planetary.org/defend-earthmsapplication-tilecolor#FFFFFF
www.planetary.org/defend-earthmsapplication-tileimage/img/site/mstile-144x144.png
www.planetary.org/defend-earthmsapplication-config/img/site/browserconfig.xml
www.planetary.org/defend-earthdescriptionHow The Planetary Society works to decrease the risk of Earth being hit by an asteroid or comet.
www.planetary.org/defend-earthreferrerno-referrer-when-downgrade
www.planetary.org/defend-earthrobotsall
www.planetary.org/defend-earthtwitter:cardsummary_large_image
www.planetary.org/defend-earthtwitter:site@exploreplanets
www.planetary.org/defend-earthtwitter:creator@exploreplanets
www.planetary.org/defend-earthtwitter:titleDefend Earth
www.planetary.org/defend-earthtwitter:descriptionHow The Planetary Society works to decrease the risk of Earth being hit by an asteroid or comet.
www.planetary.org/defend-earthtwitter:imagehttps://planetary.s3.amazonaws.com/web/assets/pictures/_1200x630_crop_center-center_82_none/20160202_earth-neo.jpg?mtime=1586006955
www.planetary.org/defend-earthtwitter:image:width800
www.planetary.org/defend-earthtwitter:image:height418
www.planetary.org/defend-earthtwitter:image:altArtist's concept of near-Earth asteroids
www.planetary.org/outreachviewportwidth=device-width,minimum-scale=1
www.planetary.org/outreachapple-mobile-web-app-capableyes
www.planetary.org/outreachapple-mobile-web-app-status-bar-styleblack-translucent
www.planetary.org/outreachapple-mobile-web-app-titledevmode
www.planetary.org/outreachmsapplication-tilecolor#FFFFFF
www.planetary.org/outreachmsapplication-tileimage/img/site/mstile-144x144.png
www.planetary.org/outreachmsapplication-config/img/site/browserconfig.xml
www.planetary.org/outreachdescriptionOur goal is to expand public knowledge about space. Our Education and Public Outreach program creates accessible educational content, helps the scientific…
www.planetary.org/outreachreferrerno-referrer-when-downgrade
www.planetary.org/outreachrobotsall
www.planetary.org/outreachtwitter:cardsummary_large_image
www.planetary.org/outreachtwitter:site@exploreplanets
www.planetary.org/outreachtwitter:creator@exploreplanets
www.planetary.org/outreachtwitter:titleEducation & Public Outreach
www.planetary.org/outreachtwitter:descriptionOur goal is to expand public knowledge about space. Our Education and Public Outreach program creates accessible educational content, helps the scientific community inform the public, and helps…
www.planetary.org/outreachtwitter:imagehttps://planetary.s3.amazonaws.com/web/assets/pictures/_1200x630_crop_center-center_82_none/20121231_mars-party-wideshot.jpg?mtime=1585766363
www.planetary.org/outreachtwitter:image:width800
www.planetary.org/outreachtwitter:image:height418
www.planetary.org/outreachtwitter:image:altBill Nye Speaking to the Celebrate Curiosity Crowd

URL format10.0

  • This website uses appropriate web addresses (URLs) throughout. This is excellent and will help search engine placement, usability and the marketability of this website.

Freshness10.0

Last updated September 16, 2020

  • It looks like this website was last updated on Wednesday, September 16, 2020. This is good because visitors perceive up-to-date websites as more credible. Websites that are updated regularly are also spidered by search engines more often.
  • To find this information we used the last modified dates reported by this website's server in addition to looking for dates written on each page.

All dates found

DateFileSource
9/16/20www.planetary.org/Last modified header
3/1/20www.planetary.org/explore-worldsBody text
9/16/20www.planetary.org/explore-worldsLast modified header
5/1/18www.planetary.org/find-lifeBody text
9/16/20www.planetary.org/find-lifeLast modified header
5/1/19www.planetary.org/defend-earthBody text
2/15/13www.planetary.org/defend-earthBody text
9/16/20www.planetary.org/defend-earthLast modified header
9/16/20www.planetary.org/outreachLast modified header
9/15/20www.planetary.org/css/site.combined.min.109.cssLast modified header

Domain agei

  • Sorry, we cannot check the domain age of .org websites.

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