DomainSpy Analytics and Page Speed Report For: Skyandtelescope.org

Content Category:  ---

Adult Content: No

Type: Page

Domain Value

$34,200.00

About Domain

The June 2020 Issue of Sky & Telescope Magazine guides readers through capturing deep-sky objects like M101 and the Sharpless catalog with video equipment.

54

DS Score

30

Traffic

76

Search

40

Technologies

69

Performance

Traffic

How many visitors are reaching your site, how often they come and how long they stay.

177,190

Alexa Rank

56,490

Monthly Unique Visitors

282,450

Monthly pageviews

$38.00

Revenue Per Day

Top 5 Countries By Traffic

Country Code Rank Page Views Users
US 57984 26.0% 23.0%
IN 101821 7.0% 8.9%
CA 42854 3.3% 4.2%
IR 46225 4.5% 3.5%
IL 10386 4.9% 2.8%

Performance

Measuring the strength of your website’s page load time

69

Performance

60/100

Google PageSpeed Score

77/100

YSlow Score

4.95

Page Size [megabytes]

2.4

Page Load Time [s]
Time To First Byte identifies the time at which your server sends a response.
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Overall Saving: 556.002[ms]

Large network payloads cost users real money and are highly correlated with long load times.
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URL Size
https://skyandtelescope.org/wp-content/themes/sky-and-telescope-2020/src/img/full-width-bg.png 962882
https://skyandtelescope.org/wp-content/uploads/2020-03-15_5e6dc6c0acdf1_ISSandDragonCRS-203-12-2025-234x155-c-default.gif 805905
https://skyandtelescope.org/wp-content/themes/sky-and-telescope-2020/dist/script.js?ver=557832caa793310e4ec3c23c297e0546 270851
https://skyandtelescope.org/wp-content/themes/sky-and-telescope-2020/dist/fonts/HelveticaNeue.otf?ver=7e09430e 239591
https://skyandtelescope.org/wp-content/uploads/June2020Cover.jpg 196423
https://connect.facebook.net/signals/config/357563535071425?v=2.9.15&r=stable 116124
https://skyandtelescope.org/wp-content/themes/sky-and-telescope-2020/dist/fonts/LyonText-Regular.otf?ver=b07db59f 110345
https://skyandtelescope.org/wp-content/uploads/fully_deployed_mirror1-736x490-c-default.jpg 97758
https://www.gstatic.com/recaptcha/releases/zItNOfzbrqVGbb4QFYpPpcrw/recaptcha__en.js 94861
https://www.gstatic.com/recaptcha/releases/zItNOfzbrqVGbb4QFYpPpcrw/recaptcha__en.js 94838
First Meaningful Paint measures when the primary content of a page is visible.
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A long cache lifetime can speed up repeat visits to your page.
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URL Cache TTL [duration] Size [kb]
https://geolocation-db.com/jsonp/?callback=callback&_=1587027694705 0 382
https://rules.quantcount.com/rules-p-kUxMtSq8AJuJ3.js 300000 505
https://connect.facebook.net/signals/config/357563535071425?v=2.9.15&r=stable 1200000 116124
https://connect.facebook.net/en_US/fbevents.js 1200000 31074
https://connect.facebook.net/signals/plugins/identity.js?v=2.9.15 1200000 11826
https://www.google-analytics.com/analytics.js 7200000 18794
https://js-agent.newrelic.com/nr-1167.min.js 7200000 10801
https://www.gstatic.com/recaptcha/api2/logo_48.png 604800000 2766
Speed Index shows how quickly the contents of a page are visibly populated.
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Image formats like JPEG 2000, JPEG XR, and WebP often provide better compression than PNG or JPEG, which means faster downloads and less data consumption.
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URL Size [Bytes] Potential Savings [Bytes]
https://skyandtelescope.org/wp-content/themes/sky-and-telescope-2020/src/img/full-width-bg.png 962266 918042
https://skyandtelescope.org/wp-content/uploads/fully_deployed_mirror1-736x490-c-default.jpg 97141 45437
https://skyandtelescope.org/wp-content/uploads/2019-09-21_5d8584040398f_x-234x155-c-default.png 45520 41408
https://skyandtelescope.org/wp-content/uploads/Venus-scene-April-13_2020-A_S-e1586969232129-736x490-c-default.jpg 71793 34797
https://tpc.googlesyndication.com/simgad/9306460264458166424 40536 31692
https://skyandtelescope.org/wp-content/uploads/C_2020-F8-April-13-Rolando-Ligustri-ST-736x490-c-default.jpg 45975 29141
https://tpc.googlesyndication.com/simgad/7890670338516291835 39421 26365
https://skyandtelescope.org/wp-content/uploads/2020-02-02_5e36c7e723185_2017T2_20200123_small-234x155-c-default.jpg 34023 25513
https://skyandtelescope.org/wp-content/uploads/brightest-supernova-1000px-736x490-c-default.jpg 39943 20799
https://skyandtelescope.org/wp-content/uploads/2019-11-12_5dcb19318f4cb_2019-11-11-1750_1-Sun_lapl4_ap350_conv-234x155-c-default.jpg 22498 20754
https://tpc.googlesyndication.com/simgad/2794889608549981744 33692 19624
https://skyandtelescope.org/wp-content/uploads/2019-09-29_5d901ed1e3c4d_Pavelchak_soapbubblevsmall-234x155-c-default.jpg 32069 19199
https://skyandtelescope.org/wp-content/uploads/Seronik-Orion-setting-736x490-c-default.jpg 41529 18547
https://skyandtelescope.org/wp-content/uploads/2020-04-04_5e88e96543214_venus_pleiades_signed_1000dpi-234x155-c-default.jpg 21614 17694
https://skyandtelescope.org/wp-content/uploads/2020-02-10_5e41c63fbac1d_RHOOPHIUCICOMPLEXOmenor-234x155-c-default.jpg 23073 14697
https://skyandtelescope.org/wp-content/uploads/Comet-ATLAS-fragmentation-Nick-Haigh-1-736x490-c-default.jpg 21647 14443
https://skyandtelescope.org/wp-content/uploads/SAAG_VicScene_450x285-736x490-c-default.jpg 24310 14106
https://skyandtelescope.org/wp-content/themes/sky-and-telescope-2020/src/img/community2-100x100-c-default.png 16528 13538
https://skyandtelescope.org/wp-content/uploads/dddd-100x100-c-default.png 16554 13388
https://skyandtelescope.org/wp-content/uploads/2020-04-05_5e89adc2d240b_2-3-4apr2020mikSTa-234x155-c-default.jpg 15664 11080
https://skyandtelescope.org/wp-content/uploads/2020-01-08_5e15776213278_AnnularSolarEclipseCollage2-234x155-c-default.jpg 12735 8829
https://skyandtelescope.org/wp-content/uploads/2019-11-11_5dc9e872d19ac_RamHdzMercuryTransit-234x155-c-default.jpg 11382 8550

Overall Saving: 840[ms], 1367643[Bytes]

Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles.
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URL Size [Bytes] Potential Savings
https://skyandtelescope.org/wp-content/plugins/the-events-calendar/common/src/resources/css/common-skeleton.min.css?ver=4.11.5.1 6482 110
https://skyandtelescope.org/wp-content/plugins/the-events-calendar/common/src/resources/css/tooltip.min.css?ver=4.11.5.1 1259 150
https://skyandtelescope.org/wp-includes/css/dist/block-library/style.min.css?ver=5.4 10163 190
https://skyandtelescope.org/wp-content/plugins/constant-contact-forms/assets/css/style.css?ver=1.8.1 4585 150
https://skyandtelescope.org/wp-content/plugins/contact-form-7/includes/css/styles.css?ver=5.1.7 1389 150
https://skyandtelescope.org/wp-content/plugins/theme-my-login/assets/styles/theme-my-login.min.css?ver=7.0.15 1146 150
https://cdn.jsdelivr.net/npm/[email protected]/slick/slick.css?ver=1 1330 230
https://skyandtelescope.org/wp-content/themes/sky-and-telescope-2020/dist/style.css?ver=5cd08214eb3d04c33a3f267c7b906ed3 76601 430
https://skyandtelescope.org/wp-content/plugins/easy-fancybox/css/jquery.fancybox.min.css?ver=1.3.24 1894 70
https://skyandtelescope.org/wp-includes/js/jquery/jquery.js?ver=1.12.4-wp 40077 270
https://skyandtelescope.org/wp-includes/js/jquery/jquery-migrate.min.js?ver=1.4.1 4983 70
https://skyandtelescope.org/wp-content/plugins/usp-pro/js/usp-pro.min.js?ver=3.2 18561 150

Overall Saving: 730[ms]

Time to interactive is the amount of time it takes for the page to become fully interactive.
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First Contentful Paint marks the time at which the first text or image is painted.
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Serve images that are appropriately-sized to save cellular data and improve load time.
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URL Size [Bytes] Potential Savings [Bytes]
https://skyandtelescope.org/wp-content/uploads/2020-03-15_5e6dc6c0acdf1_ISSandDragonCRS-203-12-2025-234x155-c-default.gif 805288 246782
https://skyandtelescope.org/wp-content/uploads/fully_deployed_mirror1-736x490-c-default.jpg 97141 84578
https://skyandtelescope.org/wp-content/uploads/Venus-scene-April-13_2020-A_S-e1586969232129-736x490-c-default.jpg 71793 62508
https://skyandtelescope.org/wp-content/uploads/Seronik-Orion-setting-736x490-c-default.jpg 41529 36158
https://skyandtelescope.org/wp-content/uploads/brightest-supernova-1000px-736x490-c-default.jpg 39943 34777
https://skyandtelescope.org/wp-content/uploads/SAAG_VicScene_450x285-736x490-c-default.jpg 24310 21684
https://skyandtelescope.org/wp-content/uploads/Comet-ATLAS-fragmentation-Nick-Haigh-1-736x490-c-default.jpg 21647 19308
https://skyandtelescope.org/wp-content/uploads/C_2020-F8-April-13-Rolando-Ligustri-ST-736x490-c-default.jpg 45975 15456
https://skyandtelescope.org/wp-content/uploads/2020-04-04_5e88e96543214_venus_pleiades_signed_1000dpi-234x155-c-default.jpg 21614 6624
https://skyandtelescope.org/wp-content/uploads/2020-04-05_5e89adc2d240b_2-3-4apr2020mikSTa-234x155-c-default.jpg 15664 4800
https://skyandtelescope.org/wp-content/uploads/2020-03-03_5e5e7348c5af0_Carinaepequena-234x155-c-default.jpg 7765 2380

Overall Saving: 320[ms], 535055[Bytes]

Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this.
Click here to learn how to optimize this
Category Time Spent
Script Evaluation 1533.66
Other 415.45
Style & Layout 307.41
Script Parsing & Compilation 143.64
Garbage Collection 105.04
Parse HTML & CSS 96.98
Rendering 74.5
First CPU Idle marks the first time at which the page's main thread is quiet enough to handle input.
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Remove dead rules from stylesheets and defer the loading of CSS not used for above-the-fold content to reduce unnecessary bytes consumed by network activity.
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URL Size [Bytes] Potential Savings [Bytes]
https://www.gstatic.com/recaptcha/releases/zItNOfzbrqVGbb4QFYpPpcrw/styles__ltr.css 91135 89577
https://skyandtelescope.org/wp-content/themes/sky-and-telescope-2020/dist/style.css?ver=5cd08214eb3d04c33a3f267c7b906ed3 76601 66515

Overall Saving: 200[ms], 156092[Bytes]

A large DOM will increase memory usage, cause longer [style calculations](https://developers.google.com/web/fundamentals/performance/rendering/reduce-the-scope-and-complexity-of-style-calculations), and produce costly [layout reflows](https://developers.google.com/speed/articles/reflow).
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Statistic Element Value
Total DOM Elements --- 923
Maximum DOM Depth --- 15
Maximum Child Elements --- 31
Minifying JavaScript files can reduce payload sizes and script parse time.
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URL Size [Bytes] Potential Savings [Bytes]
https://skyandtelescope.org/wp-content/themes/sky-and-telescope-2020/dist/script.js?ver=557832caa793310e4ec3c23c297e0546 270851 92492

Overall Saving: 160[ms], 92492[Bytes]

The maximum potential First Input Delay that your users could experience is the duration, in milliseconds, of the longest task.
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Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this.
Click here to learn how to optimize this
URL Total CPU Time Script Evaluation Script Parse
Other 1709.43 773.18 3.25
https://cdn.ampproject.org/rtv/012003262059300/amp4ads-v0.js 134.17 113.16 17.92
https://skyandtelescope.org/wp-includes/js/jquery/jquery.js?ver=1.12.4-wp 133.61 99.43 2.69
https://skyandtelescope.org/wp-content/themes/sky-and-telescope-2020/dist/script.js?ver=557832caa793310e4ec3c23c297e0546 121.09 90.8 29.83
https://securepubads.g.doubleclick.net/gpt/pubads_impl_2020040702.js 99.94 92.71 5.16
https://www.gstatic.com/recaptcha/releases/zItNOfzbrqVGbb4QFYpPpcrw/recaptcha__en.js 96.14 53.27 19.23
https://skyandtelescope.org/ 94.19 85 9.19
Optimized images load faster and consume less cellular data.
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URL Size [Bytes] Potential Savings [Bytes]
https://skyandtelescope.org/wp-content/uploads/2020-02-02_5e36c7e723185_2017T2_20200123_small-234x155-c-default.jpg 34023 22918
https://skyandtelescope.org/wp-content/uploads/fully_deployed_mirror1-736x490-c-default.jpg 97141 18867
https://skyandtelescope.org/wp-content/uploads/2019-11-12_5dcb19318f4cb_2019-11-11-1750_1-Sun_lapl4_ap350_conv-234x155-c-default.jpg 22498 18598
https://skyandtelescope.org/wp-content/uploads/2019-09-29_5d901ed1e3c4d_Pavelchak_soapbubblevsmall-234x155-c-default.jpg 32069 16885
https://tpc.googlesyndication.com/simgad/7890670338516291835 39421 16316
https://skyandtelescope.org/wp-content/uploads/2020-04-04_5e88e96543214_venus_pleiades_signed_1000dpi-234x155-c-default.jpg 21614 14915
https://skyandtelescope.org/wp-content/uploads/2020-02-10_5e41c63fbac1d_RHOOPHIUCICOMPLEXOmenor-234x155-c-default.jpg 23073 12548
https://skyandtelescope.org/wp-content/uploads/Venus-scene-April-13_2020-A_S-e1586969232129-736x490-c-default.jpg 71793 10478
https://skyandtelescope.org/wp-content/uploads/2020-04-05_5e89adc2d240b_2-3-4apr2020mikSTa-234x155-c-default.jpg 15664 8241
https://skyandtelescope.org/wp-content/uploads/C_2020-F8-April-13-Rolando-Ligustri-ST-736x490-c-default.jpg 45975 8196
https://tpc.googlesyndication.com/simgad/2794889608549981744 33692 6951
https://skyandtelescope.org/wp-content/uploads/2020-01-08_5e15776213278_AnnularSolarEclipseCollage2-234x155-c-default.jpg 12735 6108
https://skyandtelescope.org/wp-content/uploads/2019-11-11_5dc9e872d19ac_RamHdzMercuryTransit-234x155-c-default.jpg 11382 6016
https://skyandtelescope.org/wp-content/uploads/2019-11-23_5dd96c4326fde_MERCURE_20191111_33im_ph6_C90_f1454_A7R_ST-234x155-c-default.jpg 7592 4156

Overall Saving: 120[ms], 171193[Bytes]

Minifying CSS files can reduce network payload sizes.
Click here to learn how to optimize this
URL Size [Bytes] Potential Savings [Bytes]
https://skyandtelescope.org/wp-content/themes/sky-and-telescope-2020/dist/style.css?ver=5cd08214eb3d04c33a3f267c7b906ed3 76601 16165
https://skyandtelescope.org/wp-content/plugins/constant-contact-forms/assets/css/style.css?ver=1.8.1 4585 3199

Overall Saving: 80[ms], 19364[Bytes]

Consider lazy-loading offscreen and hidden images after all critical resources have finished loading to lower time to interactive.
Click here to learn how to optimize this
URL Size [Bytes] Potential Savings [Bytes]
https://skyandtelescope.org/wp-content/uploads/SAAG_VicScene_450x285-736x490-c-default.jpg 24310 24310
https://skyandtelescope.org/wp-content/uploads/Comet-ATLAS-fragmentation-Nick-Haigh-1-736x490-c-default.jpg 21647 21647

Overall Saving: 0[ms], 45957[Bytes]

Consider using `` to prioritize fetching resources that are currently requested later in page load.
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Overall Saving: 0[ms]

Redirects introduce additional delays before the page can be loaded.
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Overall Saving: 0[ms]

Text-based resources should be served with compression (gzip, deflate or brotli) to minimize total network bytes.
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Overall Saving: 0[ms], 0[Bytes]

Estimated Input Latency is an estimate of how long your app takes to respond to user input, in milliseconds, during the busiest 5s window of page load. If your latency is higher than 50 ms, users may perceive your app as laggy.
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This page has 28 external Javascript scripts. Try combining them into one. This page has 10 external stylesheets. Try combining them into one. This page has 8 external background images. Try combining them with CSS sprites.
Components:
    There are 85 static components that are not on CDN.

    You can specify CDN hostnames in your preferences. See YSlow FAQ for details.

    Components:
    • skyandtelescope.org: 69 components, 4421.9K (1276.1K GZip)
    • cdn.jsdelivr.net: 1 component, 1.7K (1.7K GZip)
    • cdn.ampproject.org: 1 component, 20.3K (20.3K GZip)
    • securepubads.g.doubleclick.net: 3 components, 279.1K (279.1K GZip)
    • www.gstatic.com: 3 components, 404.4K (60.1K GZip)
    • secure.quantserve.com: 1 component, 13.2K (13.2K GZip)
    • connect.facebook.net: 3 components, 629.3K (629.3K GZip)
    • www.googletagmanager.com: 1 component, 92.0K (56.1K GZip)
    • adservice.google.com: 1 component, 0.1K (0.1K GZip)
    • www.google.com: 2 components, 20.7K (20.7K GZip)
    There are 9 static components without a far-future expiration date.
    Components:
    • https://rules.quantcount.com/rules-p-kUxMtSq8AJuJ3.js
    • https://www.google-analytics.com/analytics.js
    • https://connect.facebook.net/signals/config/357563535071425?v=2.9.15&r=stable
    • https://connect.facebook.net/signals/plugins/identity.js?v=2.9.15
    • https://connect.facebook.net/en_US/fbevents.js
    • https://www.googletagmanager.com/gtm.js?id=GTM-NJ7CPQ7
    • https://securepubads.g.doubleclick.net/tag/js/gpt.js
    • https://adservice.google.com/adsid/integrator.js?domain=skyandtelescope.org
    • https://www.google.com/recaptcha/api.js?render=6LcfstkUAAAAADI-BB863dxWrn8Eq1GQea6Y7rVJ&ver=3.0
    The components are split over more than 4 domains
    Components:
    • skyandtelescope.org: 71 components, 4569.3K (1284.8K GZip)
    • cdn.jsdelivr.net: 1 component, 1.7K (1.7K GZip)
    • cdn.ampproject.org: 1 component, 20.3K (20.3K GZip)
    • securepubads.g.doubleclick.net: 3 components, 279.1K (279.1K GZip)
    • rules.quantcount.com: 1 component, 0.0K
    • www.gstatic.com: 3 components, 404.4K (60.1K GZip)
    • www.google-analytics.com: 1 component, 45.2K (45.2K GZip)
    • secure.quantserve.com: 1 component, 13.2K (13.2K GZip)
    • connect.facebook.net: 3 components, 629.3K (629.3K GZip)
    • www.googletagmanager.com: 1 component, 92.0K (56.1K GZip)
    • adservice.google.com: 1 component, 0.1K (0.1K GZip)
    • www.google.com: 3 components, 31.9K (31.9K GZip)
    • tpc.googlesyndication.com: 1 component, 5.8K (5.8K GZip)
    • fonts.gstatic.com: 3 components, 105.4K (102.9K GZip)
    There are 2 components that can be minified
    Components:
    • https://rules.quantcount.com/rules-p-kUxMtSq8AJuJ3.js
    • inline script tag #7
    There are 1003 DOM elements on the page
    Components:
      There is a total of 1 filter
      Components:
      • https://www.gstatic.com/recaptcha/releases/zItNOfzbrqVGbb4QFYpPpcrw/styles__ltr.css
      Favicon is more than 2000 bytes
      Components:
        Components:
          Components:
            Components:
              Components:
                Components:
                  Components:
                    Components:
                      Components:
                        Components:
                          Components:
                            Components:
                              Components:
                                Components:
                                  Components:

                                    doc

                                    # of requests: 1
                                    Size: 8645 bytes

                                    css

                                    # of requests: 10
                                    Size: 87142 bytes

                                    js

                                    # of requests: 28
                                    Size: 2278545 bytes

                                    cssimage

                                    # of requests: 8
                                    Size: 1028637 bytes

                                    image

                                    # of requests: 41
                                    Size: 1663915 bytes

                                    favicon

                                    # of requests: 1
                                    Size: -1 bytes

                                    iframe

                                    # of requests: 2
                                    Size: 16963 bytes

                                    font

                                    # of requests: 3
                                    Size: 102900 bytes

                                    doc

                                    # of requests: 1
                                    Size: 8645 bytes

                                    js

                                    # of requests: 9
                                    Size: 729441 bytes

                                    iframe

                                    # of requests: 1
                                    Size: 11153 bytes
                                    Type Url Size Response time Gzip Expires
                                    doc https://skyandtelescope.org/ 132407 1168 8645
                                    css https://skyandtelescope.org/wp-content/plugins/the-events-calendar/common/src/resources/css/common-skeleton.min.css?ver=4.11.5.1 26446 1188 4903 2021/4/17
                                    css https://skyandtelescope.org/wp-content/plugins/the-events-calendar/common/src/resources/css/tooltip.min.css?ver=4.11.5.1 1634 1189 1634 2021/4/17
                                    css https://skyandtelescope.org/wp-includes/css/dist/block-library/style.min.css?ver=5.4 53489 1189 53489 2021/4/17
                                    css https://skyandtelescope.org/wp-content/plugins/constant-contact-forms/assets/css/style.css?ver=1.8.1 12925 1193 12925 2021/4/17
                                    css https://skyandtelescope.org/wp-content/plugins/contact-form-7/includes/css/styles.css?ver=5.1.7 1746 1194 1746 2021/4/17
                                    css https://skyandtelescope.org/wp-content/plugins/theme-my-login/assets/styles/theme-my-login.min.css?ver=7.0.15 1242 1194 1242 2021/4/17
                                    css https://cdn.jsdelivr.net/npm/[email protected]/slick/slick.css?ver=1 1776 1233 1776 2021/4/16
                                    css https://skyandtelescope.org/wp-content/themes/sky-and-telescope-2020/dist/style.css?ver=5cd08214eb3d04c33a3f267c7b906ed3 397735 1213 4078 2021/4/17
                                    css https://skyandtelescope.org/wp-content/plugins/easy-fancybox/css/jquery.fancybox.min.css?ver=1.3.24 4058 1196 4058 2021/4/17
                                    js https://cdn.ampproject.org/rtv/022003262059300/amp4ads-host-v0.js 20378 2307 20378 2021/4/16
                                    js https://securepubads.g.doubleclick.net/gpt/pubads_impl_rendering_2020040702.js 65399 1991 65399 2021/4/16
                                    js https://rules.quantcount.com/rules-p-kUxMtSq8AJuJ3.js 3 1950 --- 2020/4/16
                                    js https://www.gstatic.com/recaptcha/releases/zItNOfzbrqVGbb4QFYpPpcrw/recaptcha__en.js 264655 2273 58819 2021/4/16
                                    js https://www.google-analytics.com/analytics.js 45229 1722 45229 2020/4/16
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                                    43 skyandtelescope.org/observing/m13-and-galaxies/
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                                    46 skyandtelescope.org/astronomy-news/interstellar-comet-borisov-breaking-up/
                                    47 skyandtelescope.org/astronomy-news/event-horizon-telescope-finds-bent-jet-near-black-hole/
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