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Online Dictionary - Multiple dictionaries including: English dictionary, medical dictionary, legal dictionary, financial dictionary, computer dictionary, thesaurus, dictionary of acronyms and abbreviations, dictionary of idioms, thesaurus, Columbia e...

Dictionary.com - the largest and most trusted free online dictionary. Instantly look up accurate and extensive definitions and word meanings, and hear audio pronunciations.

The World's Top Scientists Heard 15 Million Times a Day

Sky & Telescope, the Essential Magazine of Astronomy. News, observing tips, how-to advice, and more!

A different astronomy and space science related image is featured each day, along with a brief explanation.

This site includes lots of information that is time and date related, such as yearly and monthly calendars, countdown counters and the world clock which shows current time in cities all over the world.

Welcome to Cool Cosmos, NASA

Princeton University is a vibrant community of scholarship and learning that stands in the nation's service and in the service of all nations.

Space.com provides information on everything Space - satellites, stars, astronomy, the Sun, planets, NASA and more.

International führender Wissenschaftsverlag - Wissenschaft, Technik, Medizin, Architektur, Wirtschaft und Verkehr - Zeitschriften, Bücher und EContent.

Space and astronomy news