Monthly Archives: May 2014

Large picture of diagrams of conic sections, found after reading this tweet from Tufte:

@EdwardTufte: Diagrams of conic sections are unreasonably effective in representing the underlying math. http://t.co/fqHnqiTF0n

En astronomie, la libration est une lente oscillation d’un satellite tel que vu depuis le corps céleste autour duquel il orbite.

On voit en fait 60% de la lune au cours d’un cycle.

Voir aussi :
http://epod.usra.edu/blog/2014/05/libration-of-the-moon.html
http://www.wwu.edu/skywise/lunar_libration.html

Building the ultimate Solar System part 5: putting the pieces together | planetplanet :

Each orbit around the star harbors a gas giant planet orbited by five large moons. There is also a binary Earth in both the leading and trailing Trojan points with the gas giant.

lesetageresducapricorne:

121. J’ai conservé de la déférence pour les mutilés de guerre.

Bonus pas.longtemps vintage 2008 : les goldorak manchots aux quatre casimir