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The Planetary Society
The Planetary Society is the largest and most effective nonprofit organization that promotes the exploration of space through education, advocacy, and…
https://www.planetary.org/
0 high issues
0.0%
3 medium issues
9.1%
2 low issues
6.1%
28 tests passed
84.8%
0.08 seconds
16.05 kB
21 resources
Secure
Seo
Title
The title tag is perfect.
The Planetary Society
Meta description
The meta description tag is good.
The Planetary Society is the largest and most effective nonprofit organization that promotes the exploration of space through education, advocacy, and…
Headings
The headings are properly set.
  1. Your Role In Space Exploration Starts Now
  1. Featured Stories
  2. The LightSail 2 Mission
  3. Carl Sagan co-founded The Planetary Society to give you a role in space exploration.
  4. Sharing and growing the passion, beauty, and joy of space exploration.
  1. What We Do
  2. How We Work
  3. Our Results
  4. Space Topics
  5. Learn
  6. The Planetary Report
  7. Get Involved
  8. Give
  9. The Planetary Fund
  10. About Us
  11. The Planetary Society
  12. Planetary Radio has a new host
  13. Your guide to water on Mars
  14. Best space pictures of the month: October 2022
  15. The live space feeds you should be following right now
  16. What’s up in the night sky: November 2022
  17. DART smacked an asteroid! So what’s next in planetary defense?
  18. Support Our Core Enterprises
  19. LightSail 2 sails into Smithsonian
  20. The LightSail mission
  21. Support the mission
  22. Educate
  23. Advocate
  24. Innovate
  25. Collaborate
  26. Become A Member
  27. Get More Space
  1. The Uranus Issue
  2. Our Vision
  3. Our Mission
Content keywords
The content has relevant keywords.
theplanetarysociety
Image keywords
All images have alt attributes set.
SEO friendly URL
The URL is SEO friendly.
https://www.planetary.org/
404 page
The website has 404 error pages.
https://www.planetary.org/404-dc5adb66855a75019edea458d92beea6
Robots.txt
The webpage can be accessed by search engines.
Noindex
The webpage does not have a noindex tag set.
In-page links
The number of links on the webpage is okay.
  1. Account Center
  2. https://www.planetary.org
  3. https://www.planetary.org
  4. https://www.planetary.org/accountcenter
  5. Donate
  6. Join
  7. Become A Member
  8. Renew
  9. Gift Membership
  10. Donate
  11. Join
  12. Donate
  13. Explore Worlds
  14. Find Life
  15. Defend Earth
  16. Education & Public Outreach
  17. Space Policy & Advocacy
  18. Science & Technology
  19. Global Collaboration
  20. Our ImpactLearn how our members and community are changing the worlds.
  21. LightSailOur citizen-funded spacecraft successfully demonstrated solar sailing for CubeSats.
  22. Planets & Other Worlds
  23. Space Missions
  24. Night Sky
  25. Space Policy
  26. For Kids
  27. Articles
  28. Planetary Radio
  29. Space Images
  30. Videos
  31. The Uranus IssueWhy the journey will be worth the wait.
  32. Action CenterVolunteer as a space advocate.
  33. Become A MemberJoin fellow space enthusiasts in advancing space science and exploration.
  34. Email SignupGet updates and weekly tools to learn, share, and advocate for space exploration.
  35. Renew Membership
  36. Support A Project
  37. Shop to Support
  38. Travel
  39. Overview
  40. Strategic Framework
  41. News & Press
  42. Careers
  43. Contact Us
  44. Our Story
  45. Become A Member
  46. https://www.planetary.org/articles/planetary-radio-has-a-new-host
  47. Articles
  48. Planetary Radio has a new host
  49. https://www.planetary.org/articles/your-guide-to-water-on-mars
  50. Mars
  51. Your guide to water on Mars
  52. https://www.planetary.org/articles/best-space-pictures-october-2022
  53. Articles
  54. Best space pictures of the month: October 2022
  55. https://www.planetary.org/articles/live-space-feeds-you-should-follow
  56. Articles
  57. The live space feeds you should be following right now
  58. https://www.planetary.org/night-sky/night-sky-what-to-see-this-month
  59. Night Sky
  60. What’s up in the night sky: November 2022
  61. https://www.planetary.org/planetary-radio/2022-johnson-and-fast-pdco
  62. Planetary Radio
  63. DART smacked an asteroid! So what’s next in planetary defense?
  64. https://www.planetary.org/articles/lightsail-2-sails-into-smithsonian
  65. LightSail updates
  66. LightSail 2 sails into Smithsonian
  67. https://www.planetary.org/sci-tech/lightsail
  68. LightSail home
  69. The LightSail mission
  70. Become a member
  71. accept marketing-cookies
  72. Learn More
  73. Learn More
  74. Learn More
  75. Learn More
  76. $4/month
  77. $10/month
  78. $20/month
  79. $40/month
  80. Planets & Other Worlds
  81. Space Missions
  82. Night Sky
  83. Space Policy
  84. For Kids
  85. Articles
  86. Planetary Radio
  87. Space Images
  88. Videos
  89. The Planetary Report
  90. Action Center
  91. Email Signup
  92. Become A Member
  93. Contact
  94. Renew Membership
  95. Support A Project
  96. Shop to Support
  97. Travel
  98. https://www.planetary.org/
  99. https://www.planetary.org/rss/articles
  100. Account Center
  101. Contact Us
Language
The webpage has the language declared.
en
Favicon
The webpage has a favicon.
https://www.planetary.org/img/site/favicon.ico
Performance
Text compression
The HTML file is compressed.
Load time
The webpage loaded in 0.08 seconds.
Page size
The size of the HTML webpage is 16,045.00.
HTTP requests
There are fewer than 21 HTTP requests on the webpage.
  1. https://consent.cookiebot.com/uc.js
  2. https://phenomenal-terrific.planetary.org/script.js
  3. https://www.googletagmanager.com/gtag/js?id=G-HV4XDQL72V
  1. https://www.planetary.org/css/sitefont.css
  2. https://www.planetary.org/css/sitefont.css
  3. https://www.planetary.org/css/site.combined.min.138.css
  1. https://planetary.s3.amazonaws.com/sites/planetary/images/TPS_Logo_3Stack-White.svg
  2. https://planetary.s3.amazonaws.com/sites/planetary/images/TPS_Logomark-White.svg
  3. https://planetary.s3.amazonaws.com/sites/planetary/images/explore_worlds.svg
  4. https://planetary.s3.amazonaws.com/sites/planetary/images/find_life.svg
  5. https://planetary.s3.amazonaws.com/sites/planetary/images/defend_earth.svg
  6. https://planetary.s3.amazonaws.com/sites/planetary/images/menu-tpr-uranus-crescent.jpg
  7. https://planetary.s3.amazonaws.com/sites/planetary/images/menu-europa.jpg
  8. https://planetary.s3.amazonaws.com/sites/planetary/images/menu-tps-founders.jpg
  9. https://planetary.s3.amazonaws.com/sites/planetary/images/lightbulb.svg
  10. https://planetary.s3.amazonaws.com/sites/planetary/images/megaphone.svg
  11. https://planetary.s3.amazonaws.com/sites/planetary/images/rocket.svg
  12. https://planetary.s3.amazonaws.com/sites/planetary/images/hands_earth.svg
  13. data:image/svg+xml,%3Csvg xmlns=%27http://www.w3.org/2000/svg%27 width=%271200%27 height=%27905%27 style=%27background:%23CCC%27 /%3E
  14. https://planetary.s3.amazonaws.com/sites/planetary/images/TPS_Logo_3Stack-White.svg
  15. https://planetary.s3.amazonaws.com/sites/planetary/images/guidestar.png
Image format
There are 5 images that are not using the AVIF, WebP format.
  1. https://planetary.s3.amazonaws.com/sites/planetary/images/menu-tpr-uranus-crescent.jpg
  2. https://planetary.s3.amazonaws.com/sites/planetary/images/menu-europa.jpg
  3. https://planetary.s3.amazonaws.com/sites/planetary/images/menu-tps-founders.jpg
  4. data:image/svg+xml,%3Csvg xmlns=%27http://www.w3.org/2000/svg%27 width=%271200%27 height=%27905%27 style=%27background:%23CCC%27 /%3E
  5. https://planetary.s3.amazonaws.com/sites/planetary/images/guidestar.png
JavaScript defer
The are 2 javascript resources without the defer attribute.
  1. https://consent.cookiebot.com/uc.js
  2. https://www.googletagmanager.com/gtag/js?id=G-HV4XDQL72V
DOM size
The DOM size is optimal.
The HTML file has 582 DOM nodes.
Security
HTTPS encryption
The webpage uses HTTPS encryption.
The HTML file has https://www.planetary.org/ DOM nodes.
Mixed content
There are no mixed content resources on the webpage.
Server signature
The webpage has a public server signature.
cloudflare
Unsafe cross-origin links
The webpage has 1 unsafe cross-origin links.
Plaintext email
The webpage does not contain any plaintext emails.
Miscellaneous
Structured data
The webpage has structured data.
        Meta viewport
        The webpage has a meta viewport tag set.
        width=device-width,minimum-scale=1
        Character set
        The webpage has a charset value set.
        utf-8
        Sitemap
        The website has sitemaps.
        1. https://www.planetary.org/sitemaps-1-sitemap.xml
        Social
        The webpage has 12 social links.
        Content length
        The webpage has 1,029 words.
        Text to HTML ratio
        The text to HTML ratio is 10%.
        Inline CSS
        The webpage contains inline CSS code.
        1. padding-top:0.55rem;
        2. top:55px;left:50%;transform:translate(-50%, 0); min-width:260px;
        3. max-width:1200px; margin:0 auto;
        4. max-width:1200px; margin:0 auto;
        5. max-width:1200px; margin:0 auto;
        6. max-width:800px; margin:0 auto;
        7. max-width:600px; margin:0 auto;
        8. text-align:right;
        9. max-width:600px; margin:0 auto;
        10. background: linear-gradient(rgba(0,0,0,0.2), rgba(0,0,0,0.2)), rgba(0,0,0,0) url(https://planetary.s3.amazonaws.com/web/assets/hero/jwst-first-deep-field-hero.jpg) repeat scroll 50% center / cover;
        11. left: 50%; top:50%; transform: translate(-50%, -50%);
        12. max-width:800px;margin-top:6rem;
        13. overflow:hidden; height: 16rem;
        14. background-image: url(https://planetary.s3.amazonaws.com/web/assets/pictures/_768x576_crop_center-center_82_line/sarah-al-ahmed-headshot.jpg);
        15. overflow:hidden; height: 16rem;
        16. background-image: url(https://planetary.s3.amazonaws.com/web/assets/pictures/_768x432_crop_center-center_82_line/mars-terraformed.jpg);
        17. overflow:hidden; height: 16rem;
        18. background-image: url(https://planetary.s3.amazonaws.com/web/assets/pictures/_768x1330_crop_center-center_82_line/jwst-pillars-of-creation.jpg);
        19. overflow:hidden; height: 16rem;
        20. background-image: url(https://planetary.s3.amazonaws.com/web/assets/pictures/_768x511_crop_center-center_82_line/619942/aurora-borealis-canada.jpg);
        21. overflow:hidden; height: 16rem;
        22. background-image: url(https://planetary.s3.amazonaws.com/web/assets/pictures/_768x463_crop_center-center_82_line/mid-evening-taurus-nov-22.jpg);
        23. overflow:hidden; height: 16rem;
        24. background-image: url(https://planetary.s3.amazonaws.com/web/assets/pictures/_768x431_crop_center-center_60_line/20190422_NEOWISE.jpg);
        25. background: linear-gradient(rgba(0,0,0,0.4), rgba(0,0,0,0.1)) repeat scroll 0 0%,rgba(0,0,0,0) url('https://planetary.s3.amazonaws.com/assets/background/hero/hero-enceladus-2x.jpg') repeat scroll 50% 50%/cover; min-height:500px;
        26. background-image: url(https://planetary.s3.amazonaws.com/web/assets/pictures/_1200x869_crop_center-center_82_line/lightsail-2-c2-2021-06-25-indonesia-tr_2021-11-05-225433_mmef.jpg);
        27. background-image: url(https://planetary.s3.amazonaws.com/assets/images/3-earth/2020/20200610_AS13-60-8588_f840.jpg);
        28. background-image: url(https://planetary.s3.amazonaws.com/assets/images/spacecraft/2019/20190624_stp-2-fh-team-ls2_f840.jpg);
        29. background: linear-gradient(rgba(0,0,0,0.2), rgba(0,0,0,0.2)), url('https://planetary.s3.amazonaws.com/assets/background/hero/hero-milky-way-crop.jpg') 50% 50%/cover; min-height:500px;
        30. max-width:1000px;
        31. display:none !important;
        Deprecated HTML
        There are no deprecated HTML tags on the webpage.