With all the nonsense in the media about politics and hate, you may have missed a crowning achievement of human technology. We just flew a helicopter on the planet Mars.
Related: NASA’s Mars Helicopter to make first flight Sunday
/**
* SNN Article Link Cleanup & Display Stability
* Disable BOTH "Link Cleaner" and "WP Perf" before activating.
* Paste into Code Snippets as PHP; run everywhere.
*
* Standard RSS feeds, REST output, schema and article identifiers
* are not rewritten. Requires WordPress 6.2+ for link cleanup.
*/
if ( ! class_exists( 'SNN_Safe_Display_20261031', false ) ) {
final class SNN_Safe_Display_20261031 {
public static function boot() {
add_action( 'init', array( __CLASS__, 'head_cleanup' ), 20 );
add_filter( 'the_content', array( __CLASS__, 'article_links' ), 99 );
add_action( 'wp_enqueue_scripts', array( __CLASS__, 'display_css' ), 100 );
}
public static function head_cleanup() {
if ( is_admin() ) {
return;
}
remove_action( 'wp_head', 'wp_generator' );
remove_action( 'wp_head', 'print_emoji_detection_script', 7 );
remove_action( 'wp_print_styles', 'print_emoji_styles' );
}
public static function skip_request() {
return is_admin()
|| is_feed()
|| is_trackback()
|| ( defined( 'REST_REQUEST' ) && REST_REQUEST )
|| wp_doing_ajax()
|| is_preview();
}
/**
* Remove UTM parameters while preserving other query parameters,
* their order, encoding and the URL fragment.
*/
public static function clean_url( $url ) {
if ( ! is_string( $url ) || $url === '' ) {
return $url;
}
// Preserve non-web schemes such as mailto:, tel: and data:.
if (
preg_match( '/^[a-z][a-z0-9+.-]*:/i', $url )
&& ! preg_match( '~^https?://~i', $url )
) {
return $url;
}
$parts = explode( '#', $url, 2 );
$base = explode( '?', $parts[0], 2 );
if ( count( $base ) !== 2 ) {
return $url;
}
$pairs = explode( '&', $base[1] );
// Preserve commonly signed URLs.
foreach ( $pairs as $pair ) {
$parameter = explode( '=', $pair, 2 );
$key = strtolower( urldecode( $parameter[0] ) );
if (
in_array(
$key,
array(
'signature',
'sig',
'x-amz-signature',
'x-goog-signature',
),
true
)
) {
return $url;
}
}
$kept = array();
$changed = false;
foreach ( $pairs as $pair ) {
$parameter = explode( '=', $pair, 2 );
$key = urldecode( $parameter[0] );
if ( stripos( $key, 'utm_' ) === 0 ) {
$changed = true;
continue;
}
$kept[] = $pair;
}
if ( ! $changed ) {
return $url;
}
$query = implode( '&', $kept );
return $base[0]
. ( $query !== '' ? '?' . $query : '' )
. ( isset( $parts[1] ) ? '#' . $parts[1] : '' );
}
/**
* Clean anchor URLs in displayed single-post content only.
* Do not buffer or rewrite the full page or feed response.
*/
public static function article_links( $html ) {
if (
! is_string( $html )
|| self::skip_request()
|| ! is_singular( 'post' )
|| ! in_the_loop()
|| ! is_main_query()
|| apply_filters( 'snn_safe_display_skip_links', false )
|| ! class_exists( 'WP_HTML_Tag_Processor' )
) {
return $html;
}
$processor = new WP_HTML_Tag_Processor( $html );
while ( $processor->next_tag( 'A' ) ) {
$href = $processor->get_attribute( 'href' );
if ( ! is_string( $href ) ) {
continue;
}
$clean = self::clean_url( $href );
if ( $clean !== $href ) {
$processor->set_attribute( 'href', $clean );
}
}
return $processor->get_updated_html();
}
public static function display_css() {
if ( self::skip_request() || ! is_singular( 'post' ) ) {
return;
}
/*
* Space reservations apply only to ad wrappers with these classes.
* Adjust the heights to match your actual ad placements.
* Unfilled ad slots can retain blank space.
*/
$css = '
.snn-ad-container.snn-ad-inarticle {
min-height: 280px;
}
.snn-ad-container.snn-ad-sidebar {
min-height: 280px;
}
.entry-content p.wp-block-paragraph {
overflow-wrap: break-word;
}
@media (max-width: 921px) {
.snn-ad-container.snn-ad-sidebar {
min-height: 100px;
}
}
';
wp_register_style(
'snn-safe-display',
false,
array(),
'1.0.0'
);
wp_enqueue_style( 'snn-safe-display' );
wp_add_inline_style( 'snn-safe-display', $css );
}
}
SNN_Safe_Display_20261031::boot();
}
In this video captured by NASA’s Perseverance rover, the agency’s Ingenuity Mars Helicopter took the first powered, controlled flight on another planet on April 19, 2021. The rover was parked at “Van Zyl Overlook,” about 211 feet (64.3 meters) away in Mars’ Jezero Crater and chronicled the flight operations with its cameras.
These images from the rover’s Mastcam-Z cameras show the helicopter hovering above the Red Planet’s surface. During this first flight, the helicopter climbed to an altitude of 10 feet (3 meters), hovered, and then touched back down on the surface of Mars. Ingenuity is a technology demonstration.
Related: NASA is sending a helicopter to Mars
The 4-pound (1.8-kilogram) rotorcraft will help determine whether future explorations on Mars could include an aerial perspective. Perseverance touched down at “Octavia E. Butler Landing” with Ingenuity attached to its belly on Feb. 18, 2021. The helicopter was deployed to the surface on April 3.
/**
* SNN Article Link Cleanup & Display Stability
* Disable BOTH "Link Cleaner" and "WP Perf" before activating.
* Paste into Code Snippets as PHP; run everywhere.
*
* Standard RSS feeds, REST output, schema and article identifiers
* are not rewritten. Requires WordPress 6.2+ for link cleanup.
*/
if ( ! class_exists( 'SNN_Safe_Display_20261031', false ) ) {
final class SNN_Safe_Display_20261031 {
public static function boot() {
add_action( 'init', array( __CLASS__, 'head_cleanup' ), 20 );
add_filter( 'the_content', array( __CLASS__, 'article_links' ), 99 );
add_action( 'wp_enqueue_scripts', array( __CLASS__, 'display_css' ), 100 );
}
public static function head_cleanup() {
if ( is_admin() ) {
return;
}
remove_action( 'wp_head', 'wp_generator' );
remove_action( 'wp_head', 'print_emoji_detection_script', 7 );
remove_action( 'wp_print_styles', 'print_emoji_styles' );
}
public static function skip_request() {
return is_admin()
|| is_feed()
|| is_trackback()
|| ( defined( 'REST_REQUEST' ) && REST_REQUEST )
|| wp_doing_ajax()
|| is_preview();
}
/**
* Remove UTM parameters while preserving other query parameters,
* their order, encoding and the URL fragment.
*/
public static function clean_url( $url ) {
if ( ! is_string( $url ) || $url === '' ) {
return $url;
}
// Preserve non-web schemes such as mailto:, tel: and data:.
if (
preg_match( '/^[a-z][a-z0-9+.-]*:/i', $url )
&& ! preg_match( '~^https?://~i', $url )
) {
return $url;
}
$parts = explode( '#', $url, 2 );
$base = explode( '?', $parts[0], 2 );
if ( count( $base ) !== 2 ) {
return $url;
}
$pairs = explode( '&', $base[1] );
// Preserve commonly signed URLs.
foreach ( $pairs as $pair ) {
$parameter = explode( '=', $pair, 2 );
$key = strtolower( urldecode( $parameter[0] ) );
if (
in_array(
$key,
array(
'signature',
'sig',
'x-amz-signature',
'x-goog-signature',
),
true
)
) {
return $url;
}
}
$kept = array();
$changed = false;
foreach ( $pairs as $pair ) {
$parameter = explode( '=', $pair, 2 );
$key = urldecode( $parameter[0] );
if ( stripos( $key, 'utm_' ) === 0 ) {
$changed = true;
continue;
}
$kept[] = $pair;
}
if ( ! $changed ) {
return $url;
}
$query = implode( '&', $kept );
return $base[0]
. ( $query !== '' ? '?' . $query : '' )
. ( isset( $parts[1] ) ? '#' . $parts[1] : '' );
}
/**
* Clean anchor URLs in displayed single-post content only.
* Do not buffer or rewrite the full page or feed response.
*/
public static function article_links( $html ) {
if (
! is_string( $html )
|| self::skip_request()
|| ! is_singular( 'post' )
|| ! in_the_loop()
|| ! is_main_query()
|| apply_filters( 'snn_safe_display_skip_links', false )
|| ! class_exists( 'WP_HTML_Tag_Processor' )
) {
return $html;
}
$processor = new WP_HTML_Tag_Processor( $html );
while ( $processor->next_tag( 'A' ) ) {
$href = $processor->get_attribute( 'href' );
if ( ! is_string( $href ) ) {
continue;
}
$clean = self::clean_url( $href );
if ( $clean !== $href ) {
$processor->set_attribute( 'href', $clean );
}
}
return $processor->get_updated_html();
}
public static function display_css() {
if ( self::skip_request() || ! is_singular( 'post' ) ) {
return;
}
/*
* Space reservations apply only to ad wrappers with these classes.
* Adjust the heights to match your actual ad placements.
* Unfilled ad slots can retain blank space.
*/
$css = '
.snn-ad-container.snn-ad-inarticle {
min-height: 280px;
}
.snn-ad-container.snn-ad-sidebar {
min-height: 280px;
}
.entry-content p.wp-block-paragraph {
overflow-wrap: break-word;
}
@media (max-width: 921px) {
.snn-ad-container.snn-ad-sidebar {
min-height: 100px;
}
}
';
wp_register_style(
'snn-safe-display',
false,
array(),
'1.0.0'
);
wp_enqueue_style( 'snn-safe-display' );
wp_add_inline_style( 'snn-safe-display', $css );
}
}
SNN_Safe_Display_20261031::boot();
}
/**
* SNN Article Link Cleanup & Display Stability
* Disable BOTH "Link Cleaner" and "WP Perf" before activating.
* Paste into Code Snippets as PHP; run everywhere.
*
* Standard RSS feeds, REST output, schema and article identifiers
* are not rewritten. Requires WordPress 6.2+ for link cleanup.
*/
if ( ! class_exists( 'SNN_Safe_Display_20261031', false ) ) {
final class SNN_Safe_Display_20261031 {
public static function boot() {
add_action( 'init', array( __CLASS__, 'head_cleanup' ), 20 );
add_filter( 'the_content', array( __CLASS__, 'article_links' ), 99 );
add_action( 'wp_enqueue_scripts', array( __CLASS__, 'display_css' ), 100 );
}
public static function head_cleanup() {
if ( is_admin() ) {
return;
}
remove_action( 'wp_head', 'wp_generator' );
remove_action( 'wp_head', 'print_emoji_detection_script', 7 );
remove_action( 'wp_print_styles', 'print_emoji_styles' );
}
public static function skip_request() {
return is_admin()
|| is_feed()
|| is_trackback()
|| ( defined( 'REST_REQUEST' ) && REST_REQUEST )
|| wp_doing_ajax()
|| is_preview();
}
/**
* Remove UTM parameters while preserving other query parameters,
* their order, encoding and the URL fragment.
*/
public static function clean_url( $url ) {
if ( ! is_string( $url ) || $url === '' ) {
return $url;
}
// Preserve non-web schemes such as mailto:, tel: and data:.
if (
preg_match( '/^[a-z][a-z0-9+.-]*:/i', $url )
&& ! preg_match( '~^https?://~i', $url )
) {
return $url;
}
$parts = explode( '#', $url, 2 );
$base = explode( '?', $parts[0], 2 );
if ( count( $base ) !== 2 ) {
return $url;
}
$pairs = explode( '&', $base[1] );
// Preserve commonly signed URLs.
foreach ( $pairs as $pair ) {
$parameter = explode( '=', $pair, 2 );
$key = strtolower( urldecode( $parameter[0] ) );
if (
in_array(
$key,
array(
'signature',
'sig',
'x-amz-signature',
'x-goog-signature',
),
true
)
) {
return $url;
}
}
$kept = array();
$changed = false;
foreach ( $pairs as $pair ) {
$parameter = explode( '=', $pair, 2 );
$key = urldecode( $parameter[0] );
if ( stripos( $key, 'utm_' ) === 0 ) {
$changed = true;
continue;
}
$kept[] = $pair;
}
if ( ! $changed ) {
return $url;
}
$query = implode( '&', $kept );
return $base[0]
. ( $query !== '' ? '?' . $query : '' )
. ( isset( $parts[1] ) ? '#' . $parts[1] : '' );
}
/**
* Clean anchor URLs in displayed single-post content only.
* Do not buffer or rewrite the full page or feed response.
*/
public static function article_links( $html ) {
if (
! is_string( $html )
|| self::skip_request()
|| ! is_singular( 'post' )
|| ! in_the_loop()
|| ! is_main_query()
|| apply_filters( 'snn_safe_display_skip_links', false )
|| ! class_exists( 'WP_HTML_Tag_Processor' )
) {
return $html;
}
$processor = new WP_HTML_Tag_Processor( $html );
while ( $processor->next_tag( 'A' ) ) {
$href = $processor->get_attribute( 'href' );
if ( ! is_string( $href ) ) {
continue;
}
$clean = self::clean_url( $href );
if ( $clean !== $href ) {
$processor->set_attribute( 'href', $clean );
}
}
return $processor->get_updated_html();
}
public static function display_css() {
if ( self::skip_request() || ! is_singular( 'post' ) ) {
return;
}
/*
* Space reservations apply only to ad wrappers with these classes.
* Adjust the heights to match your actual ad placements.
* Unfilled ad slots can retain blank space.
*/
$css = '
.snn-ad-container.snn-ad-inarticle {
min-height: 280px;
}
.snn-ad-container.snn-ad-sidebar {
min-height: 280px;
}
.entry-content p.wp-block-paragraph {
overflow-wrap: break-word;
}
@media (max-width: 921px) {
.snn-ad-container.snn-ad-sidebar {
min-height: 100px;
}
}
';
wp_register_style(
'snn-safe-display',
false,
array(),
'1.0.0'
);
wp_enqueue_style( 'snn-safe-display' );
wp_add_inline_style( 'snn-safe-display', $css );
}
}
SNN_Safe_Display_20261031::boot();
}
/**
* SNN Article Link Cleanup & Display Stability
* Disable BOTH "Link Cleaner" and "WP Perf" before activating.
* Paste into Code Snippets as PHP; run everywhere.
*
* Standard RSS feeds, REST output, schema and article identifiers
* are not rewritten. Requires WordPress 6.2+ for link cleanup.
*/
if ( ! class_exists( 'SNN_Safe_Display_20261031', false ) ) {
final class SNN_Safe_Display_20261031 {
public static function boot() {
add_action( 'init', array( __CLASS__, 'head_cleanup' ), 20 );
add_filter( 'the_content', array( __CLASS__, 'article_links' ), 99 );
add_action( 'wp_enqueue_scripts', array( __CLASS__, 'display_css' ), 100 );
}
public static function head_cleanup() {
if ( is_admin() ) {
return;
}
remove_action( 'wp_head', 'wp_generator' );
remove_action( 'wp_head', 'print_emoji_detection_script', 7 );
remove_action( 'wp_print_styles', 'print_emoji_styles' );
}
public static function skip_request() {
return is_admin()
|| is_feed()
|| is_trackback()
|| ( defined( 'REST_REQUEST' ) && REST_REQUEST )
|| wp_doing_ajax()
|| is_preview();
}
/**
* Remove UTM parameters while preserving other query parameters,
* their order, encoding and the URL fragment.
*/
public static function clean_url( $url ) {
if ( ! is_string( $url ) || $url === '' ) {
return $url;
}
// Preserve non-web schemes such as mailto:, tel: and data:.
if (
preg_match( '/^[a-z][a-z0-9+.-]*:/i', $url )
&& ! preg_match( '~^https?://~i', $url )
) {
return $url;
}
$parts = explode( '#', $url, 2 );
$base = explode( '?', $parts[0], 2 );
if ( count( $base ) !== 2 ) {
return $url;
}
$pairs = explode( '&', $base[1] );
// Preserve commonly signed URLs.
foreach ( $pairs as $pair ) {
$parameter = explode( '=', $pair, 2 );
$key = strtolower( urldecode( $parameter[0] ) );
if (
in_array(
$key,
array(
'signature',
'sig',
'x-amz-signature',
'x-goog-signature',
),
true
)
) {
return $url;
}
}
$kept = array();
$changed = false;
foreach ( $pairs as $pair ) {
$parameter = explode( '=', $pair, 2 );
$key = urldecode( $parameter[0] );
if ( stripos( $key, 'utm_' ) === 0 ) {
$changed = true;
continue;
}
$kept[] = $pair;
}
if ( ! $changed ) {
return $url;
}
$query = implode( '&', $kept );
return $base[0]
. ( $query !== '' ? '?' . $query : '' )
. ( isset( $parts[1] ) ? '#' . $parts[1] : '' );
}
/**
* Clean anchor URLs in displayed single-post content only.
* Do not buffer or rewrite the full page or feed response.
*/
public static function article_links( $html ) {
if (
! is_string( $html )
|| self::skip_request()
|| ! is_singular( 'post' )
|| ! in_the_loop()
|| ! is_main_query()
|| apply_filters( 'snn_safe_display_skip_links', false )
|| ! class_exists( 'WP_HTML_Tag_Processor' )
) {
return $html;
}
$processor = new WP_HTML_Tag_Processor( $html );
while ( $processor->next_tag( 'A' ) ) {
$href = $processor->get_attribute( 'href' );
if ( ! is_string( $href ) ) {
continue;
}
$clean = self::clean_url( $href );
if ( $clean !== $href ) {
$processor->set_attribute( 'href', $clean );
}
}
return $processor->get_updated_html();
}
public static function display_css() {
if ( self::skip_request() || ! is_singular( 'post' ) ) {
return;
}
/*
* Space reservations apply only to ad wrappers with these classes.
* Adjust the heights to match your actual ad placements.
* Unfilled ad slots can retain blank space.
*/
$css = '
.snn-ad-container.snn-ad-inarticle {
min-height: 280px;
}
.snn-ad-container.snn-ad-sidebar {
min-height: 280px;
}
.entry-content p.wp-block-paragraph {
overflow-wrap: break-word;
}
@media (max-width: 921px) {
.snn-ad-container.snn-ad-sidebar {
min-height: 100px;
}
}
';
wp_register_style(
'snn-safe-display',
false,
array(),
'1.0.0'
);
wp_enqueue_style( 'snn-safe-display' );
wp_add_inline_style( 'snn-safe-display', $css );
}
}
SNN_Safe_Display_20261031::boot();
}
