Science.nasa.gov - SEO Checker

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Overview of the SEO Check
Meta information
76% 
Page quality
89% 
Page structure
84% 
Link structure
47% 
Server
91% 
External factors
100% 
SEO Score
Response time
0.07 s
File size
401.50 kB
Words
999
Media files
26
Number of links
90 internal / 88 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Moon - NASA Science
The length of the page title is perfect. (201 pixels out of 580 max pixel length)
There are no duplicate words in the title
Meta description
(Critically important)
Earth's Moon is the brightest and largest object in our night sky. The Moon makes Earth a more livable planet by moderating our home planet's wobble on its axis, leading to a relatively stable climate. It also causes tides, creating a rhythm that has guided humans for thousands of years.
The meta description is too long: 1757 pixels from max. 1000 pixels. Optimize description
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
https://science.nasa.gov/moon/
There is a valid canonical link specified.
Language
(Somewhat important)
Language detected in text: en
Language defined in HTML: en-us
Server location: United States of America
The following language is defined by HTML: en-us
Alternate/Hreflang Links
(Somewhat important)
There are no alternate links specified on this page.
Other meta tags
(Somewhat important)
There is no rel next meta tag on this page.
There is no rel prev meta tag on this page.
Domain
(Somewhat important)
This page is hosted on a subdomain. Use a top level domain for better SEO results.
The domain does not contain non-latin characters.
Page URL
(Somewhat important)
No parameters were found in the URL.
No session ID was found in the URL.
The URL does not have too many subdirectories.
Charset encoding
(Somewhat important)
The charset encoding (UTF-8) is set correctly.
Doctype
(Nice to have)
The doctype HTML 5 is set correctly.
The doctype is placed at first in the HTML code.
Favicon
(Nice to have)
No favicon is linked in the HTML code.

Meta tags

NameValue
viewportwidth=device-width, initial-scale=1
descriptionEarth's Moon is the brightest and largest object in our night sky. The Moon makes Earth a more livable planet by moderating our home planet's wobble on its axis, leading to a relatively stable climate. It also causes tides, creating a rhythm that has guided humans for thousands of years.
keywordsmoon
searchgov_custom3topic
parsely-titleMoon - NASA Science
parsely-linkhttps://science.nasa.gov/moon/
parsely-typepost
parsely-image-urlhttps://science.nasa.gov/wp-content/uploads/2023/03/moon-1-jpeg.webp?w=1000
parsely-pub-date2023-03-27 00:49:48
parsely-sectionmoon
parsely-tagsEarth's Moon
langen-us
twitter:titleMoon - NASA Science
twitter:descriptionEarth's Moon is the brightest and largest object in our night sky. The Moon makes Earth a more livable planet by moderating our home planet's wobble on its axis, leading to a relatively stable climate. It also causes tides, creating a rhythm that has guided humans for thousands of years.
twitter:imagehttps://science.nasa.gov/wp-content/uploads/2023/03/moon-1-jpeg.webp?w=1000
twitter:cardsummary_large_image
twitter:image:altMoon superimposed on the earth
twitter:image:width1000
twitter:image:height750
og:titleMoon - NASA Science
og:urlhttps://science.nasa.gov/moon/
og:descriptionEarth's Moon is the brightest and largest object in our night sky. The Moon makes Earth a more livable planet by moderating our home planet's wobble on its axis, leading to a relatively stable climate. It also causes tides, creating a rhythm that has guided humans for thousands of years.
og:imagehttps://science.nasa.gov/wp-content/uploads/2023/03/moon-1-jpeg.webp?w=1000
og:image:altMoon superimposed on the earth
og:image:width1000
og:image:height750
charsetutf-8

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Page quality

Content
(Critically important)
There are 2 text duplicates on this page:
  • Duplicate: This visualization shows the Moon's phase at hourly intervals througho...
This page contains 999 words. That's ok.
27.6% of the text are stop words.
The page contains a listing, which indicates a good text layout.
12 paragraphs were found on this page.
The text content is perfect.
No placeholders texts or images were found.
The average number of words per sentence of 19.5 words is good.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
A viewport "width=device-width, initial-scale=1" is provided.
At least one Apple touch icon is specified.
Bold and strong tags
(Somewhat important)
The usage of strong and bold tags is perfect. We recommend the use of up to 20 tags for this page.
Image SEO
(Somewhat important)
4 images have no alt attribute. The content of alt attributes is used by search engines.
Social Networks
(Nice to have)
There are only a few social sharing widgets on the page. Make your website popular in social networks with social sharing widgets.
Additional markup
(Nice to have)
No additional page markup was found.
HTTPS
(Somewhat important)
This website uses HTTPS to protect privacy and integrity of the exchanged data.
All included files are also transferred via HTTPS.

Media list

URLAlt attributeTitle
/_nuxt/nasa-logo_2x.C0A3w2m0.pngNASA Logo
/_nuxt/nasa-logo_2x.C0A3w2m0.pngNASA Logo
...03/iss002-e-9767.jpeg?w=4096&format=jpegThe Moon, taken from ISS
...4-iomn-key-visual.jpg?w=4096&format=jpegIllustration of imagined landscape with world landmarks, silhouette of a boy looking up at a graphical logo representing the Moon, with the title "Observe the Moon". Subtitle text reads, "September 14, 2024"
...20_40685622ae_o-1.jpg?w=4096&format=jpegAn orange full moon hangs in a pink and blue sky above a flowing river.
...top-moon-questions.gif?w=4096&format=pngIllustration composite of thinking emoji, animated question marks, with the Moon's surface in the background.
.../feature-weather.jpeg?w=4096&format=jpegRender of the Moon's surface and the Sun
...ebris-reveal-more.jpg?w=4096&format=jpegEnhanced image showing possible water-ice on the Moon.
...ion-illustration.jpeg?w=4096&format=jpegIllustration shows two planet-sized bodies crashing into each other with a massive explosion.
...review-moon-tides.jpg?w=4096&format=jpegPhoto of ocean tides coming in on beach, with Moon behind horizon.
...3/lunarfarsidelroc.png?w=4096&format=pngDetailed view of the Moon's surface, with sharp-edged craters and regional variations in shades of grey.
...moon-guide.jpg?w=4096&format=jpeg&crop=1Screenshot with overlaid interface tools and labels for viewing the the Moon.
...oon-phases.jpg?w=4096&format=jpeg&crop=1Diagram of the Moon's phases.
...logo-2color.png?w=4096&format=png&crop=1A simple two-color illustration of a gibbous Moon containing the words "Observe the Moon."
...08/jsc2024e044856.jpg?w=4096&format=jpegNo alt attribute provided
...8620_40685622ae_o.jpg?w=4096&format=jpegAt twilight, a full moon rises over a broad river with vegetated banks. The Moon appears peach-colored in a dim pink-and-blue sky.
...4416-353f737db7-o.jpg?w=4096&format=jpegNo alt attribute provided
...2024/08/viper-jsc.jpg?w=4096&format=jpegNASA’s VIPER robotic Moon rover is shown in a clean room at NASA’s Johnson Space Center in Houston. Two of its wheels are visible in this image. It is shown on a white floor in front of a white wall next to the NASA "meatball" logo. On the the floor there is yellow-and-black tape surrounding the rover.
...sfc-featured-image.png?w=4096&format=pngNo alt attribute provided
...19&h=1919&fit=clip&crop=faces,focalpointNo alt attribute provided
...nSight_poster-jpg.webp?w=4096&format=pngNew InSight into the Red Planet Poster
...banner-1920x640-1.jpg?w=4096&format=jpegA view of Saturn from the Cassini spacecraft shows the golden planet with its rings.
...20&h=1720&fit=clip&crop=faces,focalpointThis is an image of the planet Uranus taken by the spacecraft Voyager 2 in 1986.
/_nuxt/nasa-logo_2x.C0A3w2m0.pngNASA Logo
Video URLWidthHeight
...ent/uploads/2024/01/moon-phases-2024.mp4

Page structure

H1 heading
(Critically important)
The Moon
The H1 heading is too short (8 characters). It should be at least 20 Characters long.
Headings
(Important)
Some headings occur twice on the page.

Heading structure

Heading levelContent
H1 The Moon
H2 Overview
H2 Join us September 14!
H2 Explore the Moon
H2 Far Side of the Moon
H2 Far Side of the Moon Duplicate text
H2 Observe the Moon
H2 Moon Stories
H2 Discover More Topics From NASA
H2 National Aeronautics and Space Administration
H3 Moon Phases 2024
H3 Super Blue Moons: Your Questions Answered
H3 Top Questions about Earth's Moon
H3 Weather on the Moon
H3 Uncovering Lunar Water
H3 The Moon's Origin Story
H3 Earth and Tides
H3 Lunar Reconnaissance Orbiter ImagE:
H3 Lunar Reconnaissance Orbiter ImagE: Duplicate text
H3 Daily Moon Guide
H3 Moon Observation Journal
H3 International Observe the Moon Night
H3 Follow NASA
Some internal links have dynamic parameters. All internal URLs, which are not marked as nofollow, should not contain dynamic parameters.
Some anchor texts are used more than once.
3 links don't have an anchor text.
There are 6 links with a trivial anchor text.
The number of internal links is ok.
None of the anchor texts is too long.
There are too many external links (88) on this page.

Found links on this page

LinkAttributesAnchor text
https://science.nasa.gov/moon/Anchor Skip to main content
https://www.nasa.gov/missions/External Subdomain Search All NASA Missions
https://www.nasa.gov/a-to-z-of...External Subdomain A to Z List of Missions
https://www.nasa.gov/events/External Subdomain Upcoming Launches and Landings
https://www.nasa.gov/humans-in...External Subdomain Spaceships and Rockets
https://www.nasa.gov/communica...External Subdomain Communicating with Missions
https://www.nasa.gov/humans-in...External Subdomain Artemis
/mission/webb/Subdomain James Webb Space Telescope
/mission/hubble/Subdomain Hubble Space Telescope
https://www.nasa.gov/internati...External Subdomain International Space Station
/mission/osiris-rex/Subdomain OSIRIS-REx
https://www.nasa.gov/humans-in...External Subdomain Why Go to Space
https://www.nasa.gov/humans-in...External Subdomain Astronauts
https://www.nasa.gov/humans-in...External Subdomain Commercial Space
https://www.nasa.gov/humans-in...External Subdomain Destinations
https://www.nasa.gov/humans-in...External Subdomain Text duplicate Spaceships and Rockets
https://www.nasa.gov/humans-in...External Subdomain Living in Space
/earth/explore/Subdomain Explore Earth Science
/climate-change/Subdomain Climate Change
/earth/facts/Subdomain Earth, Our Planet
/earth/in-action/Subdomain Earth Science in Action
/earth/multimedia/Subdomain Earth Multimedia
/earth/data/Subdomain Earth Data
/earth-science/Subdomain Earth Science Researchers
https://www.nasa.gov/nasa-impa...External Subdomain NASA's Impacts
https://www.nasa.gov/nasa-cent...External Subdomain Centers and Facilities
https://www.nasa.gov/nasa-dire...External Subdomain Directorates
https://www.nasa.gov/nasa-orga...External Subdomain Organizations
https://www.nasa.gov/people-of...External Subdomain People of NASA
https://www.nasa.gov/careers/External Subdomain Careers
https://www.nasa.gov/learning-...External Subdomain Internships
https://www.nasa.gov/history/External Subdomain Our History
https://www.nasa.gov/doing-bus...External Subdomain Doing Business with NASA
https://www.nasa.gov/get-invol...External Subdomain Get Involved
https://www.nasa.gov/contact-n...External Subdomain Contact
https://www.nasa.gov/learning-...External Subdomain For Kids and Students
https://www.nasa.gov/learning-...External Subdomain For Educators
https://www.nasa.gov/learning-...External Subdomain For Colleges and Universities
https://www.nasa.gov/learning-...External Subdomain For Professionals
/for-everyone/Subdomain Science for Everyone
https://www.nasa.gov/learning-...External Subdomain Request an Exhibit or Speaker
https://www.nasa.gov/learning-...External Subdomain STEM Engagement at NASA
https://www.nasa.gov/aeronauti...External Subdomain Science in the Air
https://www.nasa.gov/aeronauti...External Subdomain NASA Aircraft
https://www.nasa.gov/aeronauti...External Subdomain Flight Innovation
https://www.nasa.gov/aeronauti...External Subdomain Supersonic Flight
https://www.nasa.gov/aeronauti...External Subdomain Air Traffic Solutions
https://www.nasa.gov/aeronauti...External Subdomain Green Aviation Tech
https://www.nasa.gov/aeronauti...External Subdomain Drones & You
https://www.nasa.gov/technolog...External Subdomain Technology Transfer & Spinoffs
https://www.nasa.gov/space-tra...External Subdomain Space Travel Technology
https://www.nasa.gov/space-liv...External Subdomain Technology Living in Space
https://www.nasa.gov/manufactu...External Subdomain Manufacturing and Materials
https://www.nasa.gov/robotics/External Subdomain Robotics
https://www.nasa.gov/science-i...External Subdomain Science Instruments
https://www.nasa.gov/computing/External Subdomain Computing
/exoplanets/Subdomain Exoplanets
/universe/search-for-life/Subdomain The Search for Life in the Universe
/universe/stars/Subdomain Stars
/universe/galaxies/Subdomain Galaxies
/universe/black-holes/Subdomain Black Holes
/universe/the-big-bang/Subdomain The Big Bang
/universe/dark-matter-dark-ene...Subdomain Dark Matter & Dark Energy
https://science.nasa.gov/sun/Subdomain The Sun
https://science.nasa.gov/mercury/Subdomain Mercury
https://science.nasa.gov/venus/Subdomain Venus
https://science.nasa.gov/earth/Subdomain Earth
https://science.nasa.gov/moon/Subdomain The Moon
https://science.nasa.gov/mars/Subdomain Mars
https://science.nasa.gov/jupiter/Subdomain Jupiter
https://science.nasa.gov/saturn/Subdomain Saturn
https://science.nasa.gov/uranus/Subdomain Uranus
https://science.nasa.gov/neptune/Subdomain Neptune
/dwarf-planets/Subdomain Pluto & Dwarf Planets
/asteroids-comets-meteors/Subdomain Asteroids, Comets & Meteors
/solar-system/kuiper-belt/Subdomain The Kuiper Belt
/solar-system/oort-cloud/Subdomain The Oort Cloud
/skywatching/Subdomain Skywatching
https://ciencia.nasa.gov/External Subdomain Ciencia
https://www.nasa.gov/espanol/a...External Subdomain Aeronáutica
https://ciencia.nasa.gov/tierraExternal Subdomain Ciencias Terrestres
https://ciencia.nasa.gov/siste...External Subdomain Sistema Solar
https://ciencia.nasa.gov/universoExternal Subdomain Universo
https://science.nasa.gov/Subdomain All NASA Science
/earth-science/Earth Science
/planetary-science/Planetary Science
/astrophysics/Astrophysics & Space Science
/heliophysics/The Sun & Heliophysics
/biological-physical/Biological & Physical Sciences
/lunar-science/Lunar Science
/citizen-science/Citizen Science
/astromaterials/Astromaterials
https://www.nasa.gov/aeronauti...External Subdomain Aeronautics Research
/human-space-travel-research/Human Space Travel Research
https://www.nasa.gov/External Subdomain IMG-ALT NASA Logo
https://www.nasa.gov/External Subdomain Text duplicate IMG-ALT NASA Logo
https://plus.nasa.gov/External Subdomain NASA+
https://science.nasa.gov/moon/Moon Home
/moon/facts/Facts
/moon/top-moon-questions/Top Questions
/moon/composition/Composition
/moon/formation/Formation
/moon/sun-and-weather-overview/Sun & Weather
/moon/moon-water-and-ices/Water & Ices
/moon/moon-phases/Phases
/moon/supermoons/Supermoons
/moon/eclipses/Eclipses
/moon/tides/Tides
/moon/tidal-locking/Tidal Locking
https://moon.nasa.gov/moon-obs...External Subdomain Daily Moon Guide
/moon/observe-the-moon-night/Observe the Moon Night
/moon/viewing-guide/Viewing Guide
/moon/photography-guide/Photography Guide
/moon/exploration/Overview
/moon/missions/Missions
/moon/moon-walkers/Moon Walkers
/moon/resources/Resources
/moon/multimedia/galleries/Galleries
/moon/interactives/Interactives
/moon/stories/Stories
https://science.nasa.gov/moon/Text duplicate Moon Home
/moon/stories/Text duplicate Stories
/moon/moon-phases/About Moon Phases
https://moon.nasa.gov/observe-...External Subdomain Learn more and register
/solar-system/moon/super-blue-...Trivial anchor text
Read More
/moon/top-moon-questions/Text duplicate Trivial anchor text
Read More
/moon/weather-on-the-moonText duplicate Trivial anchor text
Read More
/moon/moon-water-and-ices/Text duplicate Trivial anchor text
Read More
/moon/formation/Text duplicate Trivial anchor text
Read More
/moon/tides/Text duplicate Trivial anchor text
Read More
/wp-content/uploads/2023/03/lu...Subdomain No Text
https://moon.nasa.gov/moon-obs...External Subdomain No Text
/resource/moon-observation-jou...No Text
/moon/observe-the-moon-night/No Text
/moon/stories/Explore All Moon Stories
https://www.nasa.gov/missions/...External Subdomain Article 2 min read Gateway: Energizing Exploration
/solar-system/moon/super-blue-...Article 4 min read Super Blue Moons: Your Questions Answered
IMG-ALT At twilight, a full moon rises over a broad river with vegetated banks. The Moon appears peach-colored in a dim pink-and-blue sky.
https://www.nasa.gov/image-art...External Subdomain 1 min read Earth’s Crest Over the Lunar Horizon Image Article
/missions/artemis/clps/viper/n...2 min read NASA Explores Industry, Partner Interest in Using VIPER Moon Rover Article2 weeks ago
IMG-ALT NASA’s VIPER robotic Moon rover is shown in a clean room at NASA’s Johnson Space Center in Houston. Two of its wheels are visible in this image. It is shown ...
https://www.nasa.gov/news-rele...External Subdomain 4 min read NASA Invites Media, Public to Attend Deep Space Food Challenge Finale News Release
/earth/facts/Facts About Earth
https://science.nasa.gov/mars/Text duplicate Mars
IMG-ALT New InSight into the Red Planet Poster
https://science.nasa.gov/saturn/Text duplicate Saturn
IMG-ALT A view of Saturn from the Cassini spacecraft shows the golden planet with its rings.
https://science.nasa.gov/uranus/Text duplicate Uranus
IMG-ALT This is an image of the planet Uranus taken by the spacecraft Voyager 2 in 1986.
https://science.nasa.gov/moon/Anchor Return to top
https://www.nasa.gov/about/External Subdomain About NASA's Mission
https://www.nasa.gov/get-invol...External Subdomain Join Us
https://www.nasa.gov/External Subdomain Home
https://www.nasa.gov/news/External Subdomain News & Events
https://www.nasa.gov/multimedia/External Subdomain Multimedia
https://plus.nasa.gov/External Subdomain Text duplicate NASA+
https://www.nasa.gov/nasa-miss...External Subdomain Text duplicate Missions
https://www.nasa.gov/humans-in...External Subdomain Humans in Space
https://science.nasa.gov/earth/Subdomain Earth & Climate
/solar-system/Subdomain The Solar System
/universe/Subdomain The Universe
https://science.nasa.gov/Subdomain Science
https://www.nasa.gov/aeronautics/External Subdomain Aeronautics
https://www.nasa.gov/technology/External Subdomain Technology
https://www.nasa.gov/learning-...External Subdomain Learning Resources
https://www.nasa.gov/about/External Subdomain About NASA
https://www.nasa.gov/es/External Subdomain NASA en Español
https://www.facebook.com/NASANew window External Subdomain No Text
https://www.instagram.com/nasa/New window External Subdomain No Text
https://x.com/NASANew window External No Text
https://www.youtube.com/@NASANew window External Subdomain No Text
https://www.nasa.gov/socialmedia/External Subdomain More NASA Social Accounts
https://www.nasa.gov/nasa-news...External Subdomain NASA Newsletters
https://www.nasa.gov/sitemap/External Subdomain Sitemap
A-TITLE Sitemap
https://www.nasa.gov/news/nasa...External Subdomain For Media
A-TITLE For Media
https://www.nasa.gov/nasa-web-...External Subdomain Privacy Policy
A-TITLE Privacy Policy
https://www.nasa.gov/foia/External Subdomain FOIA
A-TITLE FOIA
https://www.nasa.gov/no-fear-act/External Subdomain No FEAR Act
A-TITLE No FEAR Act
http://oig.nasa.gov/External Subdomain Office of the IG
A-TITLE Office of the IG
https://www.nasa.gov/budgets-p...External Subdomain Budget & Annual Reports
A-TITLE Budget & Annual Reports
https://www.nasa.gov/organizat...External Subdomain Agency Financial Reports
A-TITLE Agency Financial Reports
https://www.nasa.gov/contact-n...External Subdomain Contact NASA
A-TITLE Contact NASA
https://nasa.gov/accessibility/External Accessibility
A-TITLE Accessibility

Server configuration

HTTP redirects
(Critically important)
The checked page does not redirect to another URL.
HTTP header
(Important)
The X-powered header is sent within the response header. (unnecessary)
This page uses GZip for compressed data transmission.
Performance
(Somewhat important)
The page response time is excellent with 0.07 seconds.
The file size of the HTML document is fine (402 kB).

HTTP Response Header

NameValue
servernginx
dateFri, 23 Aug 2024 21:30:16 GMT
content-typetext/html;charset=utf-8
varyAccept-Encoding, Accept-Encoding
x-powered-byNuxt
content-encodinggzip
strict-transport-securitymax-age=31536000
x-rqvie1 111 254 443
accept-rangesbytes
x-cacheHIT
cache-controlmax-age=300, must-revalidate
statuscode200
http_versionHTTP/2

External factors

This page is referenced by wikipedia.
This website has excellent links from other websites.
This page has backlinks from 367 referring domains.
This page has 2,037 backlinks.
This page has backlinks from 286 different ip addresses.

Links from Wikipedia

You can find more links using Wikipedia search

Robots.txt

User-agent: usasearch
Crawl-delay: 1
Allow: /

User-agent: *
Allow: /
Sitemap: https://science.nasa.gov/sitemap/wp-sitemap.xml

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science.nasa.gov › moon
Moon - NASA Science
Earth's Moon is the brightest and largest object in our night sky. The Moon makes Earth a more livable planet by moderating our home planet's wobble on its axis, leading to a relatively stable climate. It also causes tides, creating a rhythm that has guided humans for thousands of years.

Most important keywords

Following keywords were found. You can check the keyword optimization of this page for each keyword.

KeywordResultRecheck
Moon79%Check
NASA64%Check
Moon Night62%Check
NASA Science60%Check
moon phases58%Check
Full Moon57%Check
Blue Moon57%Check
Moon makes Earth57%Check
Moon Stories56%Check
Earth Science55%Check
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