The Basics

Why enroll?

The PSC courses environment offers instructors and students many features to help facilitate the most engaging and interactive learning experience possible. And we're adding new features all the time. Many of these feature, like in-depth instructor videos, announcements, and more, are available right away, just by browsing the available courses. But, some features require an extra level of personalization, and thus require enrollment in the course. Just to give you a taste, some of the exciting featurese available after enrollment include:

So, why not get started today?

Debug Console

Close2 MBRequestSessionTimelineDatabase16Events16
$_GET
Array( ) Array(

)
$_POST
Array( ) Array(

)
$_COOKIE
Array( ) Array(

)
$_SERVER
Array( TEMP => /var/www/tmp, TMPDIR => /var/www/tmp, TMP => /var/www/tmp, PATH => /usr/lo... Array(
TEMP => /var/www/tmp,
TMPDIR => /var/www/tmp,
TMP => /var/www/tmp,
PATH => /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin,
USER => apache,
HOME => /usr/share/httpd,
SCRIPT_NAME => /index.php,
REQUEST_URI => /help/courses/basics,
QUERY_STRING => ,
REQUEST_METHOD => GET,
SERVER_PROTOCOL => HTTP/1.1,
GATEWAY_INTERFACE => CGI/1.1,
REDIRECT_URL => /help/courses/basics,
REMOTE_PORT => 58018,
SCRIPT_FILENAME => /var/www/pulsars/index.php,
SERVER_ADMIN => root@localhost,
CONTEXT_DOCUMENT_ROOT => /var/www/pulsars,
CONTEXT_PREFIX => ,
REQUEST_SCHEME => https,
DOCUMENT_ROOT => /var/www/pulsars,
REMOTE_ADDR => 18.119.192.2,
SERVER_PORT => 443,
SERVER_ADDR => 157.182.3.38,
SERVER_NAME => pulsars.nanograv.org,
SERVER_SOFTWARE => Apache/2.4.37 (Rocky Linux) OpenSSL/1.1.1k,
SERVER_SIGNATURE => ,
HTTP_HOST => pulsars.nanograv.org,
HTTP_ACCEPT_ENCODING => gzip, br, zstd, deflate,
HTTP_USER_AGENT => Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com),
HTTP_ACCEPT => */*,
SSL_TLS_SNI => pulsars.nanograv.org,
HTTPS => on,
SCRIPT_URI => https://pulsars.nanograv.org/help/courses/basics,
SCRIPT_URL => /help/courses/basics,
UNIQUE_ID => Z0aE9CefW@5BP@306pOckgAAAQg,
HTTP_AUTHORIZATION => ,
REDIRECT_STATUS => 200,
REDIRECT_SSL_TLS_SNI => pulsars.nanograv.org,
REDIRECT_HTTPS => on,
REDIRECT_SCRIPT_URI => https://pulsars.nanograv.org/help/courses/basics,
REDIRECT_SCRIPT_URL => /help/courses/basics,
REDIRECT_UNIQUE_ID => Z0aE9CefW@5BP@306pOckgAAAQg,
REDIRECT_HTTP_AUTHORIZATION => ,
FCGI_ROLE => RESPONDER,
PHP_SELF => /index.php,
REQUEST_TIME_FLOAT => 1732674804.2266,
REQUEST_TIME => 1732674804
)
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always
renew
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tracker.ssid c338aa8d39a57f46f0fd17fa6e7e7670
tracker.rsid c338aa8d39a57f46f0fd17fa6e7e7670
  • site 0.040 seconds (+0.040); 2.00 MB (+2.000) - afterInitialise
  • site 0.054 seconds (+0.014); 2.00 MB (0.000) - afterRoute
  • site 0.061 seconds (+0.006); 2.00 MB (0.000) - afterDispatch
  • site 0.064 seconds (+0.003); 2.00 MB (0.000) - onAfterRender
  • site 0.064 seconds (+0.001); 2.00 MB (0.000) - sessionStore
2 MB

16 Queries Logged: 0.0077297687530518 seconds

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  2. DELETE
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  3. SELECT data
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  4. SELECT extension_id AS id,element AS "option",params,enabled
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  5. SELECT session_id
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      LIMIT 1
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  9. SELECT *
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  10. SELECT folder AS type,element AS name,protected,params
      FROM `jos_extensions`
      WHERE `enabled` >= '1'
      AND `type` = 'plugin'
      AND `state` >= '0'
      AND `access` IN ('1','1')
      ORDER BY `ordering` ASC
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      FROM `jos_menu` AS `m`
      LEFT JOIN jos_extensions AS e
      ON e.extension_id = m.component_id
      WHERE `m`.`published` = '1'
      AND `m`.`parent_id` > '0'
      AND `m`.`client_id` = '0'
      ORDER BY `m`.`lft` ASC
  12. SELECT con.`id`
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      LEFT JOIN `jos_categories` AS cat
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      WHERE `type` = 'component'
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  15. SELECT extension_id AS id,element AS "option",params,enabled
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  • onAfterInitialise Method plgSystemP3p::onAfterInitialise /core/plugins/system/p3p/p3p.php:21
  • onAfterInitialise Method plgSystemRemember::onAfterInitialise /core/plugins/system/remember/remember.php:20
  • onAfterInitialise Method plgSystemHubzero::onAfterInitialise /core/plugins/system/hubzero/hubzero.php:21
  • onAfterInitialise Method plgSystemXFeed::onAfterInitialise /core/plugins/system/xfeed/xfeed.php:21
  • onAfterInitialise Method plgSystemSupergroup::onAfterInitialise /core/plugins/system/supergroup/supergroup.php:113
  • onAfterInitialise Method plgSystemReferrerpolicy::onAfterInitialise /core/plugins/system/referrerpolicy/referrerpolicy.php:21
  • onAfterRoute Method plgSystemJquery::onAfterRoute /core/plugins/system/jquery/jquery.php:21
  • onAfterRoute Method plgSystemSpamjail::onAfterRoute /core/plugins/system/spamjail/spamjail.php:21
  • onAfterRoute Method plgSystemIncomplete::onAfterRoute /core/plugins/system/incomplete/incomplete.php:21
  • onAfterRoute Method plgSystemUnconfirmed::onAfterRoute /core/plugins/system/unconfirmed/unconfirmed.php:21
  • onAfterRoute Method plgSystemUnapproved::onAfterRoute /core/plugins/system/unapproved/unapproved.php:21
  • onAfterRoute Method plgSystemPassword::onAfterRoute /core/plugins/system/password/password.php:21
  • onAfterDispatch Method plgSystemMobile::onAfterDispatch /core/plugins/system/mobile/mobile.php:22
  • onAfterDispatch Method plgSystemDebug::onAfterDispatch /core/plugins/system/debug/debug.php:60
  • onAfterDispatch Method PlgSystemHighlight::onAfterDispatch /core/plugins/system/highlight/highlight.php:25
  • onAfterRender Method plgSystemSef::onAfterRender /core/plugins/system/sef/sef.php:21