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Perihelion and Aphelion

The closest point to the Sun in a planet’s orbit is called Perihelion. The furthest point is called Aphelion. The planet moves fastest at perihelion and slowest at aphelion.

GIFs extracted from Year On Earth

Planets in our Solar System orbit the Sun. The orbits of some planets are almost perfect circles, but others are not. Some orbits are shaped more like ovals, or “stretched out” circles.

Scientists call these oval shapes “ellipses”. If a planet’s orbit is a circle, the Sun is at the center of that circle. If, instead, the orbit is an ellipse, the Sun is at a point called the “focus” of the ellipse, which is not quite the same as the center.

Since the Sun is not at the center of an elliptical orbit, the planet moves closer towards and further away from the Sun as it orbits. The place where the planet is closest to the Sun is called perihelion.

When the planet is furthest away from the Sun, it is at aphelion. The words aphelion and perihelion come from the Greek language. In Greek, “helios” mean Sun, “peri” means near, and “apo” means away from.

(Source: afro-dominicano)


having the shape of a cat; cat-like.
[Jordan Rogers]

So pretty!
Road to Asgard









is this what it feels like to be on acidimage

I am so incredibly puzzled by this.

I just wanna watch this over and over again…dude…

this never gets old



Fun fact: This video is actually the reason I know how to make guacamole. 

(Source: mikedaoo)


#dragon #fuckyou




Oh… my… god…

Oh dear…this is…oh…… um

Math is also the language we would most rely on to communicate with extraterrestrial beings. The reason is because we assume math is the same everywhere. Therefore; math may be considered the meaning of life.



Sometimes I wonder if people say controversial things on tumblr so others will jump down their throats with well researched and cited sources that the OP then uses to write a paper they didn’t feel like researching themselves. 


It’s perfect! Why didn’t I think of it before? oh right, this is still too much work to bother with. back to bullshit then

(Source: militantdelusionalist)

"CN human sorcerer: “Why do you use elves to make toys, wouldn’t gnomes make more sense?”
Santa: “I tried to switch to gnomes a while ago but they weren’t as good at gift wrapping, elves have proficiency with bows you see”
LG Kender ranger: “I love you pun-santa”"

Dead Dave Dean Pileup


The number of places in our solar system that could have ever supported life now stands at 2!

The first, of course, is Earth, because … well, us. According to an awesomely exciting announcement today by NASA and JPL, we can add Gale Crater to that list! 

What they found: Curiosity’s rock drill recently uncovered clay-like minerals below Gale Crater’s rusty red surface. These muddy minerals, pictured above, hint at a “Gray Mars” era, when Gale Crater and the ancient stream bed it holds could have been home to intermittent lakes. When the onboard instruments scanned the chemical makeup of the clay, it found carbon, hydrogen, oxygen, nitrogen, phosphorous and sulfur compounds, a group of elements known as “CHONPS” that have to exist in order to create life as we know it. Most importantly, the minerals were pretty neutral in pH and were found in forms that point to a possible chemical energy system (another key ingredient for life).

What remains unknown: This does NOT mean that anything ever actually lived there. But it is the first time that the ingredients for the evolution of microbial life, and the correct conditions to support it, have been found beyond Earth. Mars still has water frozen at its poles, and once had quite a bit of water above and below the surface. The rover will poke around this site, called Yellowknife Bay, for a while longer before heading toward the mountainous center of Gale Crater. There, it will study the multiple layers of rock present on the hillside in order to piece together an even clearer picture of Gale Crater’s muddy, moist, maybe microbial Martian past.

MaybeJust want to emphasize that part.


Micro 3-D Printer Creates Tiny Structures in Seconds

Faster printing could see the technology move from research labs to industry
Full Story: MIT