Bookmarks / Science and Mathematics

Science and Mathematics

Astronomy – Astrophysics – Cosmology
Physics – Chemistry Geology – Geophysics

Units of measurement


Astronomy – Astrophysics – Cosmology

Observational Astronomy

See Astronomy Links @ wx.awcolley.com

Space Missions

In Development



  • Deep Impact — the headline: Man Hits Comet
  • Genesis "Search for Origins"
  • Stardust — through the tail of a comet and home again, the rest of this spacecraft was sent on to return to Comet Tempel (Deep Impact) hoping to get a good view of the man-made crater in 2011 (but didn't make it)
  • Ulysses — traveling where no man-made object has gone before, in an orbit perpendicular to the plane of the planetary orbits, over the north and south poles of the Sun

Earth Observations

Cool videos


Physics – Chemistry


Geology – Geophysics


Earthquakes and Tectonics



General Reference


Various Topics

Open Source Software

Online Calculators, Evaluators, Solvers, and Generators

Constants, Symbols, and Notation

Feel free to suggest links, or to report broken or moved links, using the Contact Me page.

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If you call a tail a leg, how may legs does a dog have? Four, just because you call a tail a leg doesn’t make it one!

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