Can you tell us something about j1407b?
J1407b is an exoplanet (but it can also be a brown dwarf) very interesting, orbiting its star J1407. It is larger than Saturn or Jupiter, and is surrounded by a ring system that is about 200 times larger than the rings of Saturn, very different from what we are accustomed to see.
Thirty-seven rings extending 90 million kilometers from the planet — over half the distance from the Earth to the sun — encircle the world. These planetary rings are the first found outside the solar system.
This exoplanet is 434 light-years away in the constellation Centaurus.
J1407b could house moons that could be formed by the material of the rings. One of their moons could be as large as Mars or Earth, and could orbit between the gaps of the rings, shaping them.
Astronomers expect the rings to become thinner in the next million years and eventually disappear as they form satellites from the material of the rings.
The discovery of the J1407 system and its unusual eclipses were reported by the team led by astronomer Eric Mamajek of the University of Rochester in 2012. The orbital period of J1407b is estimated at about a decade.
Simulation of the eclipse of the star J1407 by the ring system around its putative exoplanet J1407b. Each time a ring passed in front of the star, it dimmed. When entering a gap, the star brightened up again. Graphing the highs and lows, scientists created a profile of the ring system.
What the rings of J1407b would look like in our sky (above the Old Observatory in Leiden, Netherlands) if it was located where Saturn is now.
image 1°, image 2°, image 3°, image 4, image 5° & image 7°
Here are some links if you want to read more about it: here, here and here.
A rendered view of the night sky from a planet in a globular cluster. Source: Reddit
Sea of Stars, Vaadhoo Island, Maldives by Doug Perrine
Captain’s Log | September 15, 2017
The end is now upon us. Within hours of the posting of this entry, Cassini will have burned up in the atmosphere of Saturn … a kiloton explosion, spread out against the sky in a pyrrhic display of light and fire, a dazzling flash to signal the dying essence of a lone emissary from another world. As if the myths of old had foretold the future, the great patriarch will consume his child. At that point, that golden machine, so dutiful and strong, will enter the realm of history, and the toils and triumphs of this long march will be done.
For those of us appointed long ago to undertake this journey, it has been a taxing 3 decades, requiring a level of dedication that I could not have predicted, and breathless times when we sprinted for the duration of a marathon. But in return, we were blessed to spend our lives working and playing in that promised land beyond the Sun.
My imaging team members and I were especially blessed to serve as the documentarians of this historic epoch and return a stirring visual record of our travels around Saturn and the glories that we found there. This is our gift to the citizens of planet Earth.
So, it is with both wistful, sentimental reflection and a boundless sense of pride in a commitment met and a job well done that I now turn to face this looming, abrupt finality.
It is doubtful we will soon see a mission as richly suited as Cassini return to this ringed world and shoulder a task as colossal as we have borne over the last 27 years.
To have served on this mission has been to live the rewarding life of an explorer of our time, a surveyor of distant worlds. We wrote our names across the sky. We could not have asked for more.
I sign off now, grateful in knowing that Cassini’s legacy, and ours, will include our mutual roles as authors of a tale that humanity will tell for a very long time to come.
on stories, leaving a mark, and wanting to be remembered
1. Jack Rackham in Black Sails s04e10 2. John Berger, And Our Faces, My Heart, Brief as Photos. 3. Carl Sagan on Voyager’s Golden Record 4. Ada Limón, During the Impossible Age of Everyone. 5. Paleolithic handprints in Cueva de las Manos, Argentina 6. Sappho, If Not, Winter (translated by Anne Carson)
apple:
not a bad start here overall! this is recognisably intended as a brachiosaurid, and the skull shape and overall profile are pretty good (though they look a bit juvenile-ish). points off, though, for the inaccurate hands - rather than elephantine columns, they were more shaped like lima beans in cross-section. yes, really. they also only had one claw per hand (it was on the thumb). also points off for having the external fleshy nostril located on the dome of the skull; while this is the position of the bony external nostril, there is evidence that the fleshy nostril was probably located at the tip of the snout. its dead eye haunts me
score: 7/10 solid attempt
google:
google clearly went for a cartoonier approach, and to my view it served them well. still recognisably a brachiosaur - the shape of the skull and overall proportions make it resemble Europasaurus, a type of dwarf sauropod that lived on an island in what is now eastern europe. which immediately ups its score in my book. however, it falls victim to the same issues with elephantine hands as did the apple one, and as such i can’t give it a perfect score.
score: 9/10 friendly!
microsoft:
this emoji cleverly avoids any scientific inaccuracies by being extremely cartoony. i like the use of single colours rather than gradients. a little too simple for my tastes though. i can’t tell what find of sauropod, if any, it was intended to be - a brachiosaur, because of the upright neck? a mamenchisaur, maybe? i have little to work with.
score: 6/10 just too vague
samsung:
i don’t like her at all. clearly a brachiosaur - sensing a common theme - but something about it is just unpleasant to me. the body seems too fat, the limbs too short, the tail too noodly, the head too pointy. also messes up the hands again.
score: 3/10. please leave.
whatsapp:
at last, an emoji that bucks the brachiosaur trend!! this is clearly not a brachiosaur. in fact, it looks like a possible Cetiosaurus-type deal. whatever it is, it’s charming. the nostrils are at the end of the snout as they should be and - is it? - can it be? - it is! the hands are anatomically correct! each clearly has one claw, located on the thumb, and though we can’t see well, they don’t appear to be elephantine. i love them a lot.
score: 10/10 only shooting stars break the mold - oh god im so sorry i shouldve phrased that differently–
twitter:
a classic. what it lacks in detail it makes up in simplicity. it has pleasant lines and an appealing silhouette. it’s extremely vague and not based off of any real genus, and the tail is far too short, but for some reason this doesn’t bother me too much.
score: 8/10. exquisite
facebook:
hm. hmm. a lot of anatomical though was clearly put into this; overall the body form looks like a plausible sauropod. the proportions look a little weird, sure, but that seems to be perspective - after all, most sauropods were gigantic beings. beefy boys, if you will. its nostrils, upon close inspection, are correctly placed; however, its hands and feet are all messed up. i guess the real conundrum for me is that it seems to be a mish-mash of sauropods - remove the braciosaur-like domed skull, and it would be a great fit for an Apatosaurus.
score: 8/10 i’m conflicted
joypixels
what in the hell is joypixels? and what in the hell is this? i just…the hands and feet are plantigrade, meaning that the ankles touch the ground, when actual sauropods were digitigrade - walking on their toes. the shoulder and hip muscles aren’t there, and instead the limbs are just awkwardly connected to the body. it reminds me of a turtle, and not in a good way.
score: 4/10. uninspired and dull
openmoji:
they didnt try. nor will i.
score: 0/10 make an effort
emojidex
every emojidex emoji i have ever seen has just been awful. this is no different. this looks like a stereotypical loser from a meme, but as a dinosaur. the contrast between the decently moderate level of artistic detail put in and the blatant disinterest towards making it look like an animal is staggering. just awful.
score: -3/10 i just cant care enough about it to rate it lower
emojipedia:
excuse me? what the fuck? what the fuck is this? this is the main character from the low-budget ripoff of the good dinosaur. the head looks like a Corythosaurus and the body looks like barney in leapfrog stance. the gradients just make me feel a little sick. it’s awful. look at the hindlimbs and tell me that any love was put into drawing this. it’s like how a dinosaur would be drawn on tom and jerry but like, the bad charmless ones made in the 90s that were trying hard to emulate the originals. the hands look like green snowboots.
score: -500/10 i hate you i hate you i hate you i hate you i hate you i hate you
Great Basin National Park in Nevada is one of the darkest spots in the United States. What better time to appreciate this park’s clear night sky, then on International Day of Clean Air? Good air quality coupled with a lack of light pollution give visitors majestic starry views of Wheeler Peak. On clear, moonless nights at Great Basin, thousands of stars, numerous planets, star clusters, meteors, man-made satellites, the Andromeda Galaxy, and the Milky Way can be seen with the naked eye. The area boasts some of the darkest night skies left in the country. Low humidity, good air quality, and minimal light pollution, combined with high elevation, create a unique window to the universe. Photo by John Vermette (sharetheexperience.org). Photo description: A bright Milky Way and night sky filled with stars light up the mountains below.
Amateur astronomer, owns a telescope. This is a side blog to satiate my science-y cravings! I haven't yet mustered the courage to put up my personal astro-stuff here. Main blog : @an-abyss-called-life
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