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W

www.cfa.harvard.edu

Registreret
Skærmbillede www.cfa.harvard.edu
Skærmbillede af hjemmesiden
Sideanalyseopdateringsdato: 2026/02/26 17:39:08
Sidste whois opdateringsdato: 2026/07/19 08:11:13
Domænestatus
Registreret
Betalt indtil
31.07.2027
Tilgængelig fra
30.08.2027
SEO-score
59.59%
87
Score opnået
146
Maksimal score

Hovedoplysninger

ℹ️
Titel: Home | Center for Astrophysics | Harvard & Smithsonian
Beskrivelse: ukendt
Nøgleord: ukendt
Sidekodning: utf-8
Side filstørrelse: 88 KB

Serverinformation

🖥️
IP: 104.20.19.56
Beliggenhed: ,,,,,,
Http server: cloudflare
Kodning: utf-8
Drevet af: php/8.2.28

Meta-tags liste

🏷️

Interne links

🔗

Eksterne links

🌐

Whois information

📄
update_date: 04-Jun-2026
update_time: 1780531200
expiration_date: 31-Jul-2027
expiration_time: 1816992000

Whois rå data

📋
            This Registry database contains ONLY .EDU domains.
The data in the EDUCAUSE Whois database is provided
by EDUCAUSE for information purposes in order to
assist in the process of obtaining information about
or related to .edu domain registration records.
The EDUCAUSE Whois database is authoritative for the
.EDU domain.
A Web interface for the .EDU EDUCAUSE Whois Server is
available at: http://whois.educause.edu
By submitting a Whois query, you agree that this information
will not be used to allow, enable, or otherwise support
the transmission of unsolicited commercial advertising or
solicitations via e-mail. The use of electronic processes to
harvest information from this server is generally prohibited
except as reasonably necessary to register or modify .edu
domain names.
-------------------------------------------------------------
Domain Name: HARVARD.EDU
Registrant:
Harvard University
Massachusetts Hall
Cambridge, MA 02138
USA
Administrative Contact:
Benjamin Dash
Harvard University
784 Memorial Drive
Cambridge, MA 02138
USA
+1.6174955708
[email protected]
Technical Contact:
Network Operations
Harvard University
HUIT Network Services
60 Oxford Street
Cambridge, MA 02139
USA
+1.6174955708
[email protected]
Name Servers:
A16-64.AKAM.NET
A1-171.AKAM.NET
A10-66.AKAM.NET
A7-65.AKAM.NET
A11-67.AKAM.NET
A6-66.AKAM.NET
Domain record activated: 27-Jun-1985
Domain record last updated: 04-Jun-2026
Domain expires: 31-Jul-2027

Robots.txt

🤖
			# As a condition of accessing this website, you agree to abide by the following
# content signals:

# (a)  If a Content-Signal = yes, you may collect content for the corresponding
#      use.
# (b)  If a Content-Signal = no, you may not collect content for the
#      corresponding use.
# (c)  If the website operator does not include a Content-Signal for a
#      corresponding use, the website operator neither grants nor restricts
#      permission via Content-Signal with respect to the corresponding use.

# The content signals and their meanings are:

# search:   building a search index and providing search results (e.g., returning
#           hyperlinks and short excerpts from your website's contents). Search does not
#           include providing AI-generated search summaries.
# ai-input: inputting content into one or more AI models (e.g., retrieval
#           augmented generation, grounding, or other real-time taking of content for
#           generative AI search answers).
# ai-train: training or fine-tuning AI models.

# ANY RESTRICTIONS EXPRESSED VIA CONTENT SIGNALS ARE EXPRESS RESERVATIONS OF
# RIGHTS UNDER ARTICLE 4 OF THE EUROPEAN UNION DIRECTIVE 2019/790 ON COPYRIGHT
# AND RELATED RIGHTS IN THE DIGITAL SINGLE MARKET.

# BEGIN Cloudflare Managed content

User-agent: *
Content-Signal: search=yes,ai-train=no
Allow: /

User-agent: Amazonbot
Disallow: /

User-agent: Applebot-Extended
Disallow: /

User-agent: Bytespider
Disallow: /

User-agent: CCBot
Disallow: /

User-agent: ClaudeBot
Disallow: /

User-agent: Google-Extended
Disallow: /

User-agent: GPTBot
Disallow: /

User-agent: meta-externalagent
Disallow: /

# END Cloudflare Managed Content

#
# robots.txt
#
# This file is to prevent the crawling and indexing of certain parts
# of your site by web crawlers and spiders run by sites like Yahoo!
# and Google. By telling these "robots" where not to go on your site,
# you save bandwidth and server resources.
#
# This file will be ignored unless it is at the root of your host:
# Used:    http://example.com/robots.txt
# Ignored: http://example.com/site/robots.txt
#
# For more information about the robots.txt standard, see:
# http://www.robotstxt.org/robotstxt.html

User-agent: *
# CSS, JS, Images
Allow: /core/*.css$
Allow: /core/*.css?
Allow: /core/*.js$
Allow: /core/*.js?
Allow: /core/*.gif
Allow: /core/*.jpg
Allow: /core/*.jpeg
Allow: /core/*.png
Allow: /core/*.svg
Allow: /profiles/*.css$
Allow: /profiles/*.css?
Allow: /profiles/*.js$
Allow: /profiles/*.js?
Allow: /profiles/*.gif
Allow: /profiles/*.jpg
Allow: /profiles/*.jpeg
Allow: /profiles/*.png
Allow: /profiles/*.svg
# Directories
Disallow: /core/
Disallow: /profiles/
# Files
Disallow: /README.md
Disallow: /composer/Metapackage/README.txt
Disallow: /composer/Plugin/ProjectMessage/README.md
Disallow: /composer/Plugin/Scaffold/README.md
Disallow: /composer/Plugin/VendorHardening/README.txt
Disallow: /composer/Template/README.txt
Disallow: /modules/README.txt
Disallow: /sites/README.txt
Disallow: /themes/README.txt
Disallow: /web.config
# Paths (clean URLs)
Disallow: /admin/
Disallow: /comment/reply/
Disallow: /filter/tips
Disallow: /node/add/
Disallow: /search/
Disallow: /user/register
Disallow: /user/password
Disallow: /user/login
Disallow: /user/logout
Disallow: /media/oembed
Disallow: /*/media/oembed
# Paths (no clean URLs)
Disallow: /index.php/admin/
Disallow: /index.php/comment/reply/
Disallow: /index.php/filter/tips
Disallow: /index.php/node/add/
Disallow: /index.php/search/
Disallow: /index.php/user/password
Disallow: /index.php/user/register
Disallow: /index.php/user/login
Disallow: /index.php/user/logout
Disallow: /index.php/media/oembed
Disallow: /index.php/*/media/oembed
        

SEO revision

🔍

Teknisk SEO

Svarkode
200
Status 200 OK - siden indlæses korrekt.
Tegnkodning
Page: utf-8, Header: utf-8
Tegnkodning konsekvent mellem HTML og overskrifter.
Sidestørrelse
90134 bytes
Sidestørrelse acceptabel til hurtig indlæsning.
!
Ressourcer
52 total
For mange ressourcer. Optimer og kombiner filer for bedre ydeevne.
Hreflang Tags
0 hreflang tags
Tilføj hreflang-tags, hvis du har flersproget indhold.
Robots.txt
Exists
Robots.txt-fil fundet.
!
Sitemap
Not found
Tilføj sitemap.xml og referer til det i robots.txt.
HTTPS
Yes
Sikker HTTPS-forbindelse aktiveret.
!
Kompression
br
Aktiver gzip- eller zstd-komprimering for at reducere filstørrelser.
Caching
max-age=300, public
Cache-kontroloverskrifter er korrekt indstillet.
Sidehastighed
1.96 ms
Fremragende læssehastighed.

On-Page SEO

Titel
Home | Center for Astrophysics | Harvard & Smithsonian
God titellængde (30-60 tegn).
!
Meta beskrivelse
Lenght:0
Tilføj en metabeskrivelse (100-160 tegn anbefales).
!
H1 Overskrift
0 found - ""
Tilføj præcis én H1-overskrift med primære søgeord.
Ordtælling
511
God indholdslængde (500-2000 ord anbefales).
!
Kanonisk tag
Tilføj kanonisk tag for at forhindre duplikatindholdsproblemer.
Dupliker Meta
[]
Ingen duplikerede metatags fundet.
Nøgleord
Meta søgeord er valgfri (bruges ikke af større søgemaskiner).

Indhold og UX

Sprog
en
Sprog attribut korrekt indstillet.
!
Billeder
1 total, 1 missing ALT
Tilføj ALT-tekst til billeder for tilgængelighed og SEO.
Udsigtsport
width=device-width, initial-scale=1.0
Viewport-metatag korrekt indstillet til mobilenheder.
!
Åbn Graph
Missing: og:title, og:description, og:image, og:url
Tilføj manglende OpenGraph-tags til deling på sociale medier:og:title, og:description, og:image, og:url
!
Strukturerede data
0 JSON-LD scripts
Tilføj strukturerede data (JSON-LD) for at få udvidede uddrag og bedre SEO.

Stillinger i Google

Søgesætninger - Google

🔍
Position Udtryk Side Uddrag
1old the big/big-questions/what-...
2night today/current-night-sky
5seen today/current-night-sky
7black hole/research/topic/blac...
8what s am i seeing/current-night-sky
8first big/big-questions/what-...

Yderligere tjenester

💎