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Not sure how to say a word, phrase or name? Search millions of YouTube videos. Hear other people say it so you can say it like a Pro!

The Moon makes Earth more livable, sets the rhythm of ocean tides, and keeps a record of our solar system's history.

An open-source internal ballistics simulator for rocket motor experimenters - reilleya/openMotor

Learn How to Pronounce English Words | Natural Recordings by Native Speakers

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NASA Mars Relay Network visualization tool.

Application for determining the course of the sun at a desired time and place with interactive map.

Watch the latest rocket launches happening today from SpaceX, NASA, and other agencies. Get live updates, videos and detailed information of the mission along with live countdown. The go-to source for space enthusiasts and industry experts.

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Quizlet makes learning fun and easy with free flashcards and premium study tools. Join millions of students and teachers who use Quizlet to create, share, and learn any subject.

Written chinese character help sheets with cantonese pronunciation.

Open-source satellite tracker and pass predictor for Android, inspired by Gpredict - rt-bishop/Look4Sat

[vc_row] [vc_column] [vc_column_text] Try to understand China. Learn Chinese. Sinosplice is the longest-running blog on the internet focused on learning Mandarin Chinese.It is maintained by John Pasden, who has been in China for years.[/vc_column_text][/vc_column][/vc_row] [vc_row] [vc_column width=”1/2″] [vc_column_text]John’s free resources for learning Chinese have helped learners all over the world learn Mandarin: A Beginner’s Guide to Chinese Pronunciation The 5 Stages To Learning Chinese The... Read More

This is a community for people studying or teaching Chinese - or even if you're just interested in Chinese languages. Discussion of all Chinese languages/dialects is welcome! Please post interesting links, language learning advice, or questions!

Chinese classics online with every character linked to English definition and etymology.

Chinese-English dictionary for simplified and traditional Chinese with audio examples and many informations about Chinese characters, words and memorization methods. Learn Chinese on your PC, with iPhone, iPad or Android phones and tablets.

Calculate when you can see the SpaceX Starlink satellites above your location

Create & Share Web Pages Fast with Hero. Host Photos, Text, Links & Lists. Free for personal, business & community use. Organize Content in Spaces & Lists

ChineseSkill apps help you learn Chinese Mandarin from zero for free. Interactive, structured and thorough, ChineseSkill combines the fun of games and depth of textbooks into one app so you can learn Chinese easily.

HelloChinese is the most fun and effective app for beginners to learn Mandarin Chinese. Designed with an interactive gaming approach, HelloChinese helps beginners learn Mandarin Chinese at an accelerated pace, and aids in achieving conversational fluency in no time. It’s rated 4.8+ stars on both App Store and Google Play Store, and gets ranked #1 Chinese learning app in over 100+ countries.

A visualization of satellites, debris, and other objects tracked by LeoLabs in low earth orbit

A common way to learn Mandarin Chinese is from the bottom-up: pinyin, characters, words, sentences and finally conversations and stories. I believe you can

Read Mandarin at any level — effortlessly.