Esa.int - SEO Checker

Overview of the SEO Check
Meta information
77% 
Page quality
93% 
Page structure
58% 
Link structure
85% 
Server
100% 
External factors
100% 
SEO Score
Response time
0.13 s
File size
54.10 kB
Words
780
Media files
90
Number of links
63 internal / 13 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
European Space Agency
The length of the page title is perfect. (221 pixels out of 580 max pixel length)
There are no duplicate words in the title
Meta description
(Critically important)
The European Space Agency portal features the latest news in space exploration, human spaceflight, launchers, telecommunications, navigation, monitoring and space science.
The meta description is too long: 1082 pixels from max. 1000 pixels. Optimize description
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
No canonical link is specified.
Language
(Somewhat important)
Language detected in text: en
Language defined in HTML: en
Server location: France
The following language is defined by HTML: en
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)
The domain is no subdomain.
The domain length is good.
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, user-scalable=no, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0
facebook-domain-verificationhuxggdjw6qgb4kjoxa3s1ixopprlpf
descriptionThe European Space Agency portal features the latest news in space exploration, human spaceflight, launchers, telecommunications, navigation, monitoring and space science.
keywordsEuropean Space Agency, Moon, Mars, sun, space exploration, probes, missions, satellites, launchers, international space station, ISS, telecommunications, earth observation, navigation, astronauts, solar system, universe, remote sensing, space news, ESA, environment, monitoring, astronomy, Ariane, rocket, Galileo, comet, education, Venus
langen
og:titleEuropean Space Agency
og:descriptionThe European Space Agency portal features the latest news in space exploration, human spaceflight, launchers, telecommunications, navigation, monitoring and space science.
X-UA-CompatibleIE=edge
charsetutf-8

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Page quality

Content
(Critically important)
This page contains 780 words. That's ok.
19.9% of the text are stop words.
Keywords used in the page title are also used in the page content. That's good!
The page contains a listing, which indicates a good text layout.
4 paragraphs were found on this page.
The text content is perfect.
No placeholders texts or images were found.
There are no duplicates on the site.
The average number of words per sentence of 13.5 words is good.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
No Apple touch icon is specified.
A viewport "width=device-width, user-scalable=no, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0" is provided.
Bold and strong tags
(Somewhat important)
The usage of strong and bold tags is perfect. We recommend the use of up to 16 tags for this page.
Image SEO
(Somewhat important)
17 images have no alt attribute. The content of alt attributes is used by search engines.
Social Networks
(Nice to have)
This page is optimized perfectly for social networks.
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
...llars/design/pillars/images/ESA_Menu.svgESA menu toggle
...ars/design/pillars/images/ESA_Search.svgESA search toggle
...lars/design/pillars/images/ESA_Title.svgESA title
...llars/design/pillars/images/ESA_Logo.svgESA logo
.../pillars/design/pillars/images/arrow.svgOpen item
...eng-GB/Ignis_patch_in_Cupola_pillars.jpgIgnis patch in Cupola
.../pillars/design/pillars/images/arrow.svgOpen item
...g-GB/Cat_s_Paw_Nebula_NIRCam_pillars.jpgCat’s Paw Nebula (NIRCam)
.../pillars/design/pillars/images/arrow.svgOpen item
.../European_Launcher_Challenge_pillars.jpgEuropean Launcher Challenge
.../pillars/design/pillars/images/arrow.svgOpen item
...rtist_impression_of_Oumuamua_pillars.jpgArtist impression of ‘Oumuamua
...2-eng-GB/ESA_Strategy_2040_card_full.jpgNo alt attribute provided
...rs/design/pillars/images/arrow-white.svgOpen
...rs/design/pillars/images/play-button.svgPlay
...ola_during_Ignis_mission_card_medium.pngNo alt attribute provided
...rs/design/pillars/images/arrow-white.svgPlay
...nca_Estuary_in_Argentina_card_medium.jpgΦsat-2 view of Bahia Blanca Estuary in Argentina
.../pillars/design/pillars/images/arrow.svgRead
...-GB/Smile_sees_the_light_card_medium.jpgSmile sees the light
.../pillars/design/pillars/images/arrow.svgRead
...by_its_protoplanetary_disc_card_full.jpgNo alt attribute provided
...rs/design/pillars/images/arrow-white.svgView
...rom_Space_Lake_District_UK_card_full.jpgThe varied landscape of England’s Lake District is featured in this image captured by the Copernicus Sentinel-2 mission.
...rs/design/pillars/images/arrow-white.svgView
...ies_of_the_50Y_Statement_card_medium.jpgGroup picture of the signatories of the 50Y ESA Anniversary statement.
.../pillars/design/pillars/images/arrow.svgRead
.../Cat_s_Paw_Nebula_NIRCam_card_medium.jpgCat’s Paw Nebula (NIRCam)
.../pillars/design/pillars/images/arrow.svgRead
...e_s_land_and_sea_sizzles_card_medium.jpgA powerful heatwave has been gripping large parts of southern Europe. This image, captured by the Copernicus Sentinel-3 mission’s Sea and Land Surface Temperature Radiometer on 29 June 2025, reveals the temperature of the land surface.
.../pillars/design/pillars/images/arrow.svgOpen
.../pillars/design/pillars/images/arrow.svgOpen item
...ne_6_first_flight_highlights_pillars.jpgNo alt attribute provided
...53-1-eng-GB/Our_missions_card_medium.jpgNo alt attribute provided
.../pillars/design/pillars/images/arrow.svgOpen
.../DiscoverESA_cover_image_card_medium.pngNo alt attribute provided
.../pillars/design/pillars/images/arrow.svgOpen
...855-1-eng-GB/This_is_ESA_card_medium.jpgNo alt attribute provided
.../pillars/design/pillars/images/arrow.svgOpen
.../ESA_blog_navigator_link_card_medium.jpgESA blog navigator link
.../pillars/design/pillars/images/arrow.svgOpen
...-eng-GB/ESA_brand_centre_card_medium.jpgNo alt attribute provided
.../pillars/design/pillars/images/arrow.svgOpen
.../pillars/design/pillars/images/arrow.svgOpen item
...view_of_the_Horsehead_Nebula_pillars.jpgEuclid’s view of the Horsehead Nebula
...93-1-eng-GB/Cosmic_pearl_card_medium.jpgNo alt attribute provided
.../pillars/design/pillars/images/arrow.svgRead
...nca_Estuary_in_Argentina_card_medium.jpgΦsat-2 view of Bahia Blanca Estuary in Argentina
.../pillars/design/pillars/images/arrow.svgRead
...ct_government_data_image_card_medium.jpgESA acts to protect government data image
.../pillars/design/pillars/images/arrow.svgRead
...-GB/Smile_sees_the_light_card_medium.jpgSmile sees the light
.../pillars/design/pillars/images/arrow.svgRead
...GB/Ignis_patch_in_Cupola_card_medium.jpgIgnis patch in Cupola
.../pillars/design/pillars/images/arrow.svgRead
...g_around_galaxy_NGC_6505_card_medium.jpgEuclid image of a bright Einstein ring around galaxy NGC 6505
.../pillars/design/pillars/images/arrow.svgRead
...rs/design/pillars/images/play-button.svgPlay
...ola_during_Ignis_mission_card_medium.pngNo alt attribute provided
...rs/design/pillars/images/arrow-white.svgPlay
...rs/design/pillars/images/play-button.svgPlay
...nel-4_mission_highlights_card_medium.pngNo alt attribute provided
...rs/design/pillars/images/arrow-white.svgPlay
...rs/design/pillars/images/play-button.svgPlay
.../Plato_s_eyes_meet_brain_card_medium.jpgNo alt attribute provided
...rs/design/pillars/images/arrow-white.svgPlay
...rs/design/pillars/images/play-button.svgPlay
...ernational_Space_Station_card_medium.pngNo alt attribute provided
...rs/design/pillars/images/arrow-white.svgPlay
...rs/design/pillars/images/play-button.svgPlay
...ernational_Space_Station_card_medium.pngNo alt attribute provided
...rs/design/pillars/images/arrow-white.svgPlay
...1093729-4-eng-GB/Careers_card_medium.jpgNo alt attribute provided
.../pillars/design/pillars/images/arrow.svgOpen
...eng-GB/Business_with_ESA_card_medium.jpgNo alt attribute provided
.../pillars/design/pillars/images/arrow.svgOpen
...pace_Innovation_Platform_card_medium.jpgOpen Space Innovation Platform
.../pillars/design/pillars/images/arrow.svgOpen
...ommercialisation_Gateway_card_medium.gifESA Commercialisation Gateway
.../pillars/design/pillars/images/arrow.svgOpen
...by_its_protoplanetary_disc_card_full.jpgNo alt attribute provided
...rs/design/pillars/images/arrow-white.svgView
...rom_Space_Lake_District_UK_card_full.jpgThe varied landscape of England’s Lake District is featured in this image captured by the Copernicus Sentinel-2 mission.
...rs/design/pillars/images/arrow-white.svgView
...om_Space_Zanzibar_Tanzania_card_full.jpgEarth from Space: Zanzibar, Tanzania
...rs/design/pillars/images/arrow-white.svgView
...ope_s_land_and_sea_sizzles_card_full.jpgA powerful heatwave has been gripping large parts of southern Europe. This image, captured by the Copernicus Sentinel-3 mission’s Sea and Land Surface Temperature Radiometer on 29 June 2025, reveals the temperature of the land surface.
...rs/design/pillars/images/arrow-white.svgView
...rburst_shining_in_infrared_card_full.jpgA starburst shines in infrared (MIRI)
...rs/design/pillars/images/arrow-white.svgView

Page structure

H1 heading
(Critically important)
There is no H1 heading specified.
Headings
(Important)
Some headings occur twice on the page.
The structure of headings is missing one or more levels. Do not skip heading levels.
There are 53 headings on the page. The amount of headings should be in a more proper relation to the amount of text.

Heading structure

Heading levelContent
H2 In the spotlight
H2 Recommended
H2 Trending
H2 Featured videos
H2 More
H2 Featured images
H3 Ignis mission highlights
H3 Week in images: 07-11 July 2025
H3 European Launcher Challenge: preselected challengers unveiled
H3 ESA tracks rare interstellar comet
H3 ESA's Strategy 2040
H3 Earth views from Cupola during Ignis mission
H3 Φsat-2 begins science phase for AI Earth images
H3 Smile passes gruelling set of tests
H3 You can’t judge a star by its protoplanetary disc
H3 Earth from Space: Lake District, UK
H3 ESA Council receives Anniversary Statement
H3 Webb scratches under Cat’s Paw Nebula for third anniversary
H3 Week in images: 30 June - 4 July 2025
H3 More items
H3 Ariane 6 first flight highlights
H3 Our missions
H3 Discover ESA
H3 This is ESA
H3 ESA Blog Navigator
H3 ESA Brand Centre
H3 Euclid’s view of the Horsehead Nebula
H3 Where is the International Space Station?
H3 Φsat-2 begins science phase for AI Earth images Duplicate text
H3 IRIS²: Building Europe’s secure space future
H3 Smile passes gruelling set of tests Duplicate text
H3 Ignis mission highlights Duplicate text
H3 Euclid discovers a stunning Einstein ring
H3 Earth views from Cupola during Ignis mission Duplicate text
H3 MTG-S1 and Copernicus Sentinel-4 mission highlights
H3 Plato’s eyes meet brain
H3 A new adventure on the International Space Station
H3 Ax-4 joins the International Space Station
H3 More items Duplicate text
H3 Careers at ESA
H3 Business with ESA
H3 Open Space Innovation Platform
H3 ESA Commercialisation Gateway
H3 You can’t judge a star by its protoplanetary disc Duplicate text
H3 Earth from Space: Lake District, UK Duplicate text
H3 Earth from Space: Zanzibar, Tanzania
H3 Southern Europe’s land and sea sizzles
H3 Webb spots a starburst shining in infrared
H3 More items Duplicate text
H4 ESA Vision
H4 ESA Pillars
H4 ESA Programmes
H4 ESA and You
Some internal link anchor texts are too long.
Some anchor texts are used more than once.
The number of internal links is ok.
All internal links are not using dynamic parameters.
There are 13 external links on this page.
LinkAttributesAnchor text
https://www.esa.int/IMG-ALT ESA logo
/Science_Exploration/Human_and...Read
IMG-ALT Open item
/About_Us/Week_in_images/Week_...Subdomain Open
IMG-ALT Open item
/Enabling_Support/Space_Transp...Text duplicate Read
IMG-ALT Open item
/Space_Safety/Planetary_Defenc...Text duplicate Read
IMG-ALT Open item
/About_Us/ESA_Strategy_2040New window ESA Strategy 2040
/About_Us/50_years_of_ESANew window 50 years of ESA
https://vision.esa.int/categor...New window External Subdomain Accelerators
/Science_ExplorationSubdomain Science & Exploration
https://www.esa.int/Space_SafetySubdomain Space Safety
https://www.esa.int/ApplicationsSubdomain Applications
/Enabling_SupportSubdomain Enabling & Support
/Science_Exploration/Space_Sci...Space Science
/Science_Exploration/Human_and...Human and Robotic Exploration
/Applications/Observing_the_EarthObserving the Earth
/Applications/Connectivity_and...Connectivity
/Applications/Satellite_naviga...Satellite Navigation
/Enabling_Support/Space_Transp...Space Transportation
/Enabling_Support/Space_Engine...Technology
/Enabling_Support/OperationsOperations
/About_Us/Careers_at_ESACareers at ESA
/About_Us/Business_with_ESABusiness with ESA
https://www.esa.int/NewsroomESA for Media
https://www.esa.int/EducationEducation at ESA
/About_Us/ESA_Strategy_2040Highlight Agency ESA's Strategy 2040 Open
IMG-ALT Open
/ESA_Multimedia/Videos/2025/07...Video 00:00:40 Science & Exploration Earth views from Cupola during Ignis mission 16/07/2025 217 views 15 likes Play
IMG-ALT Play
/Applications/Observing_the_Ea...Story Applications Φsat-2 begins science phase for AI Earth images 15/07/2025 739 views 17 likes Read
IMG-ALT Φsat-2 view of Bahia Blanca Estuary in Argentina
/Science_Exploration/Space_Sci...Story Science & Exploration Smile passes gruelling set of tests 15/07/2025 894 views 16 likes Read
IMG-ALT Smile sees the light
/ESA_Multimedia/Images/2025/05...Image Science & Exploration You can’t judge a star by its protoplanetary disc 14/07/2025 966 views 39 likes View
IMG-ALT View
/ESA_Multimedia/Images/2025/07...Image Applications Earth from Space: Lake District, UK 11/07/2025 11145 views 78 likes View
IMG-ALT The varied landscape of England’s Lake District is featured in this image captured by the Copernicus Sentinel-2 mission.
/About_Us/Corporate_news/ESA_C...Story Agency ESA Council receives Anniversary Statement 11/07/2025 461 views 3 likes Read
IMG-ALT Group picture of the signatories of the 50Y ESA Anniversary statement.
/Science_Exploration/Space_Sci...Story Science & Exploration Webb scratches under Cat’s Paw Nebula for third anniversary 10/07/2025 4559 views 58 likes Read
IMG-ALT Cat’s Paw Nebula (NIRCam)
/About_Us/Week_in_images/Week_...Subdomain Focus on Week in images: 30 June - 4 July 2025 Discover our week through the lens Open
IMG-ALT A powerful heatwave has been gripping large parts of southern Europe. This image, captured by the Copernicus Sentinel-3 mission’s Sea and Land Surface Temper...
https://www.esa.int/(archive)/0More items
/ESA_Multimedia/Videos/2024/07...Play
IMG-ALT Open item
/ESA/Our_MissionsSubdomain Focus on Our missions Discover our missions: past, present and future. Open
IMG-ALT Open
https://discover.esa.int/New window External Subdomain Focus on Discover ESA Explore the full range of ESA’s activities through a set of thematic journeys Open
IMG-ALT Open
/About_Us/ESA_Publications/Thi...Focus on This is ESA This is ESA is an illustrated guide to what ESA is and what we do. Now available in all Member State languages. Open
IMG-ALT Open
http://blogs.esa.int/New window External Subdomain Focus on ESA Blog Navigator Check out all our active blogs - although update frequency can vary. Open
IMG-ALT ESA blog navigator link
https://brand.esa.int/New window External Subdomain Focus on ESA Brand Centre Discover the ESA brand, with guidelines and downloadable assets, such as logos. Plus explore ESA brand licensing, co-branding and m...
IMG-ALT Open
/ESA_Multimedia/Images/2023/11...View
IMG-ALT Open item
/Science_Exploration/Human_and...Story Science & Exploration Where is the International Space Station? 31327386 views 60914 likes Read
IMG-ALT Read
/Applications/Observing_the_Ea...Text duplicate Story Applications Φsat-2 begins science phase for AI Earth images 15/07/2025 739 views 17 likes Read
IMG-ALT Φsat-2 view of Bahia Blanca Estuary in Argentina
/About_Us/Careers_at_ESA/IRIS2...Story Agency IRIS²: Building Europe’s secure space future 07/07/2025 9991 views 15 likes Read
IMG-ALT ESA acts to protect government data image
/Science_Exploration/Space_Sci...Text duplicate Story Science & Exploration Smile passes gruelling set of tests 15/07/2025 894 views 16 likes Read
IMG-ALT Smile sees the light
/Science_Exploration/Human_and...Story Science & Exploration Ignis mission highlights 15/07/2025 1380 views 39 likes Read
IMG-ALT Ignis patch in Cupola
/Science_Exploration/Space_Sci...Story Science & Exploration Euclid discovers a stunning Einstein ring 10/02/2025 49585 views 240 likes Read
IMG-ALT Euclid image of a bright Einstein ring around galaxy NGC 6505
/ESA_Multimedia/Videos/2025/07...Text duplicate Video 00:00:40 Science & Exploration Earth views from Cupola during Ignis mission 16/07/2025 217 views 15 likes Play
IMG-ALT Play
/ESA_Multimedia/Videos/2025/07...Video 00:03:30 Applications MTG-S1 and Copernicus Sentinel-4 mission highlights 02/07/2025 1261 views 42 likes Play
IMG-ALT Play
/ESA_Multimedia/Videos/2025/06...Video 00:01:38 Science & Exploration Plato’s eyes meet brain 30/06/2025 2036 views 51 likes Play
IMG-ALT Play
/ESA_Multimedia/Videos/2025/06...Video 00:04:13 Science & Exploration A new adventure on the International Space Station 27/06/2025 1198 views 36 likes Play
IMG-ALT Play
/ESA_Multimedia/Videos/2025/06...Video 00:02:36 Science & Exploration Ax-4 joins the International Space Station 26/06/2025 821 views 42 likes Play
IMG-ALT Play
/ESA_Multimedia/VideosText duplicate More items
/About_Us/Careers_at_ESAFocus on Careers at ESA Work with a highly dedicated team, committed to ensuring that Europe continues to remain at the forefront of the space industry. Open
IMG-ALT Open
/About_Us/Business_with_ESAFocus on Business with ESA ESA procurements aim to accomplish ESA space missions and to support the competitiveness of the European space industry. Open
IMG-ALT Open
https://ideas.esa.int/New window External Subdomain Focus on Open Space Innovation Platform Submit your ideas and change the future of space research, technology and applications. Open
IMG-ALT Open Space Innovation Platform
https://commercialisation.esa....New window External Subdomain Focus on ESA Commercialisation Gateway Creating links between new businesses and ESA Open
IMG-ALT ESA Commercialisation Gateway
/ESA_Multimedia/Images/2025/05...Text duplicate Image Science & Exploration You can’t judge a star by its protoplanetary disc 14/07/2025 966 views 39 likes View
IMG-ALT View
/ESA_Multimedia/Images/2025/07...Text duplicate Image Applications Earth from Space: Lake District, UK 11/07/2025 11145 views 78 likes View
IMG-ALT The varied landscape of England’s Lake District is featured in this image captured by the Copernicus Sentinel-2 mission.
/ESA_Multimedia/Images/2025/07...Image Applications Earth from Space: Zanzibar, Tanzania 04/07/2025 6964 views 66 likes View
IMG-ALT Earth from Space: Zanzibar, Tanzania
/ESA_Multimedia/Images/2025/07...Image Applications Southern Europe’s land and sea sizzles 01/07/2025 8287 views 163 likes View
IMG-ALT A powerful heatwave has been gripping large parts of southern Europe. This image, captured by the Copernicus Sentinel-3 mission’s Sea and Land Surface Temper...
/ESA_Multimedia/Images/2025/06...Image Science & Exploration Webb spots a starburst shining in infrared 30/06/2025 2269 views 76 likes View
IMG-ALT A starburst shines in infrared (MIRI)
/ESA_Multimedia/ImagesText duplicate More items
/Services/Frequently_asked_que...FAQ
/Services/ContactsContacts
/Services/Terms_and_conditionsTerms and conditions
/Services/Privacy_noticePrivacy notice
/About_Us/Careers_at_ESAText duplicate Careers at ESA
/Services/Email_updatesSubscribe
https://bsky.app/profile/esa.intNew window External No Text
https://www.facebook.com/Europ...New window External Subdomain No Text
https://www.instagram.com/euro...New window External Subdomain No Text
https://www.linkedin.com/compa...New window External Subdomain No Text
https://www.pinterest.com/Euro...New window External Subdomain No Text
https://twitter.com/esaNew window External No Text
https://www.youtube.com/user/ESANew window External Subdomain No Text

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://www.esa.int/"
HTTP header
(Important)
No X-Powered HTTP header is sent.
The web server transmits the web page (HTML) in compressed form.
Performance
(Somewhat important)
The page response time is excellent with 0.13 seconds.
The file size of the HTML document is fine (54 kB).

HTTP Response Header

NameValue
expiresWed, 16 Jul 2025 13:29:53 GMT
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content-languageen-GB
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cache-controlmax-age=600
last-modifiedWed, 16 Jul 2025 13:20:23 GMT
content-encodinggzip
content-typetext/html; charset=utf-8
via1.1 varnish, 1.1 varnish
accept-rangesbytes
dateWed, 16 Jul 2025 13:30:09 GMT
age586
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x-cacheHIT, HIT
x-cache-hits18, 1
x-timerS1752672610.803510,VS0,VE1
varyAccept-Encoding,Origin
content-length8360
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http_versionHTTP/2

External factors

This page is referenced by wikipedia.
This website has excellent links from other websites.
This page has backlinks from 7,477 referring domains.
This page has 826,820 backlinks.
This page has backlinks from 5,359 different ip addresses.

Robots.txt

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Search preview

www.esa.int
European Space Agency
The European Space Agency portal features the latest news in space exploration, human spaceflight, launchers, telecommunications, navigation, monitoring and space science.

Most important keywords

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

KeywordResultRecheck
Space70%Check
Europe70%Check
European Space69%Check
European Space Agency66%Check
European65%Check
Space Exploration59%Check
Agency58%Check
Space Station57%Check
International Space57%Check
Space Future55%Check

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