The Earth is Wobbling: The Precession of the Equinoxes

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The Earth is Wobbling: The Precession of the Equinoxes

Wolfram|Alpha

Capture d'écran 2016-09-01 14.37.54.png

This is a super-useful tool for quick calculations and graphs. Try entering something like “surface area of sun”, “pi to 100 digits”, “life expectancy france 1910”, or “Who formulated the halting problem?” in the search bar!

This website looks like a regular search engine, but returns facts, figures, and charts, rather than just URLs to other pages.

Wolfram|Alpha

/r/AskScience

Here’s a cool subreddit where people ask STEM-related questions like:

“If you fired a handgun from the ISS, pointing away from Earth, would it be able to escape Earth’s gravitational pull?”

“What is the advantage of having five, rather than four or six, fingers?”

“How is information encoded between the eye and the brain?”

…some questions on this board are pretty easily answered, but others provoke long, interesting discussions! Usually these questions are answered by people who have some professional knowledge of the topic on which they’re commenting.

/r/AskScience