HEATKEYS

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.

The planets today shows you where the planets are now as a live display - a free online orrery. You can see the planets positions from 3000 BC to 3000 AD, and also which are in retrograde.

Academia.edu helps academics follow the latest research.

Providing researchers with access to millions of scientific documents from journals, books, series, protocols and reference works.

A little online application with interactive map that shows sun movement and sunlight phases during the given day at the given location.

Real time ephemerides, finder charts and data for Solar System objects

Watch and Play model of Solar System Planets and Constellations moving over the Night Sky.

Contains remote communication receivers and thousands of pages of Ham Radio information on antennas, grounds, feed lines, impedance matching, amplifiers, filters, propagation, electronics, and more.

YouTube is a place to discover, watch, upload and share videos.

The Astronomical Applications Departmentof the U.S. Naval Observatory computes, from fundamental astronomicalreference data, the position, brightness, and other observablecharacteristics of celestial bodies, as well as the circumstancesof astronomica...