Crab Nebula
Crab Nebula
Source: NASA, ESA, J. Hester and A. Loll (Arizona State University)

Astronomy & Space

Astronomy Now Sky & Telescope StarDate
Messier Catalog Tom’s Astro Blog VotSS
Cometography MPC data.NASA
Stellarium KStars XEphem

We wish to pursue the truth no matter where it leads. But to find the truth, we need imagination and skepticism both. We will not be afraid to speculate, but we will be careful to distinguish speculation from fact. The cosmos is full beyond measure of elegant truths; of exquisite interrelationships; of the awesome machinery of nature.
~~~ Carl Sagan, Cosmos


Wolfram MathWorld PlanetMath Math2
ProjectEuler GIMPS
GNU Octave Maxima

“No amount of experimentation can ever prove me right; a single experiment can prove me wrong.”
~~~ Albert Einstein

“Science knows no country, because knowledge belongs to humanity, and is the torch which illuminates the world.”
~~~ Louis Pasteur


WebMD RxList

Weather & Climate

NWSJax The Weather Channel AccuWeather
WUWT Climate Audit UCAR

“Climate is what we expect, weather is what we get.”
~~~ Mark Twain

“What you get by achieving your goals is not as important as what you become by achieving your goals.”
~~~ Henry David Thoreau

Citizen Science

Citizen Science Alliance Zooniverse Galazy Zoo
SciStarter CornellLab Ornithology NASA Science


AAAS Am. Meteor Soc. Int’l Astro Union Nat’l Geographic Soc.
NOGLSTP Nat’l Space Soc. Planetary Soc. Smithsonian