TopDir - top sites directory

TopDir is a human edited web directory with various categories, a collection of hand-picked web resources for visitors

TopDir offers free website promotion for webmasters and website owners. Relevant search results and many categories for adding and promoting websites. Free web promotion for websites at TopDir directory. Submit your url for review. A collection of hand-picked web resources for visitors. This page is focused on one particular aspect of Science, Astronomy, Solar System, Small Bodies.

Observatories (8)
Space Missions@ (31)

- A digest of news related to asteroids, comets, and meteors. Monitors changes in impact risk calculations. Includes links to original sources of information.

» Aerospaceguide.net: Near Earth Asteroid - Descriptions of asteroids, comets, and near Earth objects.

» Asteroids - their history - Introduction paper on asteroids and Kuiper Belt objects.

» Asteroids and Comets - Data from across NASA, compiled at the National Space Science Data Center.

» Asteroids, Comets, and Meteorites: Their Intimate Relation with Life on Earth - A curriculum prepared by the Yale-New Haven Teachers Institute.

» Asteroids Comets Meteors (ACM) - A meeting bringing together scientists studying small solar system bodies. Dates and links of past meetings.

» Astrobiology Magazine: Meteors, Comets, and Asteroids - Selected articles, usually with some connection to life on Earth or elsewhere in the solar system.

» Chiron Information and Documentation - A minor body with dual status as both asteroid and comet.

» Comet/Asteroid Orbit Determination and Ephemeris Software - A downloadable Java program for various orbit computations on asteroids and comets.

» Committee on Small Body Nomenclature - Group responsible for the naming of asteroids and comets. Description of the naming process, guidelines for submitting name proposals.

» Keeping an Eye on Space Rocks - Overview of asteroids, comets, and meteors, with special attention to the impact hazard to Earth.

» Meteorites and Asteroids - Companion resource to an astronomy textbook, contains links and current news about meteorites and asteroids.

» Minor Planet Center - International clearing house for observations of asteroids and comets.

» NASA Planetary Photojournal: Asteroid and Comets - Selected NASA images.

» Nine Planets: Sedna - General information on the object officially known as 2003 VB12. This object is the most distant body known that orbits our Sun.

» The Nine Planets: Small Bodies in the Solar System - Overview of asteroids, comets, meteors. Images, data, links.

» NOVA Online: Doomsday Asteroid - Transcript of the television broadcast, kitchen comet activity, general information on comets.

» Orbits - Interactive 3D orbit visualization for known asteroids and comets.

» The Physics of: Asteroids, Comets and Meteoroids - Physics of asteroids, comets and meteoroids. Application with Newton's and Kepler's Laws, kinetic and potential energy.

» Planetary Data System: Small Bodies Node - Data concerning asteroids and comets, in a standard format for use primarily by astronomical observers and mission planners, as well as educators and students.

» Small Bodies - Link collection covering the Kuiper Belt and Oort Cloud, asteroids, comets, meteors and meteorites, near Earth objects, and impacts.

» Startdate Online: Leftovers - Fact sheets on asteroids and comets, index to radio broadcasts on related topics. From the McDonald Observatory.

» USGS Astrogeology: Other Objects - Official names of features on asteroids as approved by the International Astronomical Union. Data and images for selected asteroids and comets.

» Welcome to the Planets: Small Bodies - Asteroids Ida and Dactyl, Comets Shoemaker-Levy 9 and Halley, representative meteorites.

» BBC NEWS: Astronomers Discover 'New Planet' - A telescope has detected what could be the Solar System's 10th planet, Sedna. (March 15, 2004)

TopDir is a human edited web directory with various categories. Our mission is to organize theme based websites and remove the clutter from the information. We strive to provide context based website results to our visitors. This directory is an evolving one and we regularly add new categories, if there is a necessity. Members can suggest new categories and websites for inclusion. This is one stop promotion site for webmasters and website owners. We invite you to browse the categories and suggest your website url for an editor review. This page is focused on one particular aspect of Science, Astronomy, Solar System, Small Bodies.

Help build the largest human-edited directory on the web. Soumettre un site - Open Directory Project - Devenir Editeur

Web directories list the websites by theme. The links in a web directory are collected, edited and organized by humans. Yahoo and Dmoz ODP(Open Directory Project) are considered as the best human-edited web directories on the Internet and they are one of the most trusted and relied traffic sources. Since these directories get thousands of submissions every day, it is sometimes difficult to get listed in them and your URL may take a long time to be reviewed and listed. Generally good directory listings give a surprise boost to your link popularity.