science-and-things

sci-universe:

Ann Druyan — the amazing lady who has co-written, produced and directed both the original (1980s) and today’s “Cosmos” series.
She is a science popularizer, author, producer and marijuana advocate.

“We may be little but we don’t think small. It’s the courage of questions, of grasping our true circumstances, and not pretending we are at the center of it all, that is adulthood. That’s being a grownup. Nothing in the cosmos diminishes the profundity of life and love. This show is a celebration of life in the universe.”

the-actual-universe

bobak:

sci-universe:

There are five special points where a small mass can orbit in a constant pattern with two larger masses (such as a satellite with respect to the Earth and Moon). The Lagrange Points, named in honor of Italian-French mathematician Joseph-Louis Lagrange, are positions where the gravitational pull of two large masses precisely equals the centripetal force required for a small object to move with them. This mathematical problem, known as the “General Three-Body Problem” was considered by Lagrange in his prize winning paper (Essai sur le Problème des Trois Corps, 1772).

The five Sun–Earth Lagrangian points are called SEL1–SEL5, and similarly those of the Earth–Moon system EML1–EML5, etc. Orbits around Lagrangian points offer unique advantages that have made them a good choice for performing certain spacecraft missions.
For example the Sun–Earth L1 point is useful for observations of the Sun, as the Sun is always visible without obstructions by the Earth or the Moon. SOHO, the ESA/NASA solar spacecraft is positioned there.

read descriptions about invidual L-points here

And maybe we’ll put an asteroid at one of the Earth-Moon points one day to visit…

foreveralone-lyguy

tsukishimake1:

my favorite tidbit about rome is that in the mid-1800s one of the popes didnt like the statues in rome having dicks so he ordered them knocked off. fast forward to the last decade or so and art historians in conjunction with the vatican are trying to erm. restore. the statues. but the dicks were just. kept in a box. so art historians are going around rome, with a box of dicks, trying to match them up to their owner.

nowyoukno

jackviolet:

The cop who shot a dog in front of its 6 year old owner was fired after outrage from the community and a “Justice for Apollo” campaign.

The cop who shot an unarmed black teen is on paid leave and remains protected by his department. So far, days of outrage and protest have still not brought any justice to Mike Brown.

In America, in 2014, the life of a black man is valued less than that of a dog.

Literally.