"The Seychelles Has Become A Major Tourist Destination For Beachgoing And Scuba Diving, But It’s Not

Space is so creepy and wonderful. Who the hell needs hell when there’s space.

Like there’s an old constellation called Eridanus that you can see in the southern sky, and its not a very interesting constellation. It’s a river. It’s actually the water that’s pouring out of Aquarius, so in the sky it’s kind of boring. It’s a path of stars.

But within Eridanus, in between the stars, there’s a place where the background radiation is unexplainably cold. Because after the Big Bang, there was all this light that scattered everywhere, and it’s the oldest light in the universe, but we can’t see it. It’s so dim that it only shows up as a glow of microwaves, so to us, it just looks like the blackness of the night.

But there’s this spot in Eridanus where that little glow of ancient microwaves isn’t what it should be. It’s cold and dark.

And it’s enormous. Like a billion light year across. Of mostly just emptiness. And we don’t know why. One theory is that it’s simply a huge void, like a place where there are no galaxies. Voids like that do exist. Most of them are smaller, but they’re a sort of predictable part of the structure of the universe. The cold spot in Eridanus, if it were a void, would be so enormous that it would change how we understand the universe. 

But another theory is that this cold spot is actually the place where a parallel universe is tangled with our own. 

Io is the first Galilean moon of Jupiter, it is slightly larger than Earth’s moon.  Io experiences intense tidal heating due to its elliptical orbit and orbital resonance with Europa and Ganymede.  This makes Io the most geologically active moon in our solar system.  Io’s interior is composed of molten iron sulphide, and the surface is a crust of sulfur and silicon.  Io has more than 400 active volcanoes, which can eject lava plumes more than 500 kilometers above the surface.  Some of the material from Io’s volcanic eruptions leaves the moon and orbits Jupiter, producing a plasma torus.  Io also has lakes of lava called paterae, which can also create eruptions.  The most dramatic paterae are Loki, Tvashtar, and Tupan.  The constant volcanic activity creates a thin atmosphere of sulfur dioxide and sodium chloride.  Io is an interesting model for exoplanets with intense geological activity, such as COROT-7b.

PART TWO AT LAST

okay y’all, you can click through the image on a blog, or click here to find my powerpoint on google drive. feel free to look through it, talk to me about it, talk to each other about it, whatever.

i have not edited this in the slightest, so take it all with a grain of salt. do have a look at the “notes” field for most of the slides; that’s where i wrote out (in varying degrees of detail/clarity) my thoughts on the subject at hand, but YMMV with that.

all that said please do credit me if you use this stuff for anything. and if you find any of my sources in the presentation lacking in citations, let me know!

feel free to join in the conversations over on slack (link is for signup, then find the #linguistics channel), or on tumblr! do also keep this post and other posts that involve speculation with respect to the Speech tagged with #not you DD, so that everybody’s butts are covered on that front.

thanks, cousins!

Sometimes I read stuff and I just wanna shake someone like "WHY IS NOBODY TALKING ABOUT THIS"

Claiming there is no other life in the universe is like scooping up some water, looking at the cup and claiming there are no whales in the ocean.

Neil deGrasse Tyson in response to “Aliens can’t exist because we haven’t found them yet” (via meggannn)

White dwarfs polluted with planetary debris

The Hubble Space Telescope has found chemical evidence for the building blocks for rocky planets in an extremely unusual place: the atmospheres of two burned-out stars. Called white dwarfs, these stars are small, dim shadows of stars that would have once been like our sun, and they reside 150 light-years from Earth in the young star cluster of Hyades. Hubble’s spectroscopic observations identified silicon and low levels of carbon, both of which are strong indicators of a rocky material similar to that which makes up Earth. “When these stars were born, they built planets,” said Jay Farihi, lead author of the study, “and there’s a good chance they currently retain some of them… Based on the silicon-to-carbon ratio in our study, we can actually say that this material is basically Earth-like.” The material is thought to have ended up in the atmosphere of these stars after they collapsed into white dwarfs, and the larger planets in their solar system nudged asteroids into star-grazing orbits. The stars’ gravitational pull tore the asteroids apart, and the pulverised debris fell into a ring around the white dwarfs and were eventually funnelled inwards to pollute the stars themselves. The discovery suggests that rocky planets may commonly assemble around stars, and may help us to understand what will happen to our solar system in five billion years, when our own sun burns out.

When the last living thing dies, death dies too.

Astronomers have discovered the largest known structure in the universe, a clump of active galactic cores that stretch 4 billion light-years from end to end. The structure is a light quasar group (LQG), a collection of extremely luminous Galactic Nulcei powered by supermassive central black holes.

Orion Nebula, 1881 vs. 2011 via Imgur

Astronauts just found life in space, we kid you not

Russian cosmonauts have discovered something remarkable clinging to the outside of the International Space Station: living organisms.

“Results of the experiment are absolutely unique" | Follow micdotcom