visible from earth


What Will Happen When Betelgeuse Explodes?

“Every star will someday run out of fuel in its core, bringing an end to its run as natural source of nuclear fusion in the Universe. While stars like our Sun will fuse hydrogen into helium and then – swelling into a red giant – helium into carbon, there are other, more massive stars which can achieve hot enough temperatures to further fuse carbon into even heavier elements. Under those intense conditions, the star will swell into a red supergiant, destined for an eventual supernova after around 100,000 years or so. And the brightest red supergiant in our entire night sky? That’s Betelgeuse, which could go supernova at any time.”

One of the most sobering cosmic truths is that every star in the Universe will someday run out of fuel and die. Once its core fuel is exhausted, all it can do is contract under its own gravitational pull, fusing heavier and heavier elements until it can go no further. Only the most massive stars, capable of continuing to fuse carbon (and even heavier elements) will ever create the Universe’s ultimate cataclysmic event: a Type II, or core collapse, supernova. Stars that are fusing carbon (and up) appear to us today as red supergiants, and the brightest red supergiant as seen from Earth is Betelgeuse. Sometime in the next 100,000 years or so, Betelgeuse will go supernova. When it does, it will emit incredible amounts of radiation, become intrinsically brighter than a billion suns and and be easily visible from Earth during the day. But that’s not all.

What’s the full story on what will happen when Betelgeuse goes supernova? Come get the science today!

Slytherin x Ravenclaw Relationship Would Include:

Request: Pls could u do slytherin x ravenclaw? Thank youu xxx

Originally posted by sweetnothinngg

  • Library Dates
  • “Why are we having a date in the library?!” 
  • “Because you can’t resist my pouty face.”
  • “When did you become so manipulative??”
  • “After meeting you, love.”
  • Their first date being meticulously planned by the Slytherin:
  • charmed fairy lights and enchanting a ceiling of a classroom
  • the Ravenclaw being delighted and becoming captivated by the Slytherin’s natural charm
  • discovering their favourite scented candle together because of the Slytherin’s endearing romantic style
  • Star gazing
  • sneaking out of their dorms and meeting each other by the Great Lake
  • never the Quidditch pitch, they hate the feeling of being isolated
  • thick blankets and steaming flasks of mocha from the kitchens
  • laying in each others arms
  • sharing a diary in which they record every moment spent together
  • the Slytherin watching fondly as the Ravenclaw scratches away, pausing here and there to think of the perfect word
  • the slytherin resting their head on the Ravenclaw’s lap and revelling in everything about them
  • “Did you know, that some light we’re seeing is from dead stars? The light has to travel an incredibly long distance to be visible from Earth so it is logical that that is the case.”
  • “Did you know that your eyes reflect their light like irridescent diamonds?”
  • Both making metaphorical analyses of the fundamentality of the sky
  • The Slytherin making a competion of finding a constellation first
  • “There’s Scorpio! I win.”
  • “I found that ages ago, I’m on to counting them now, slow coach!”

Originally posted by fraudulentlove

  • Cuddling by the fire as the familiar downpour floods the grounds
  • the Slytherin cuddling the Ravenclaw in their arms as the Ravenclaw reads a book aloud to them
  • The Slytherin fiddling childishly with the Ravenclaw’s hair as they do so
  • Eventually falling asleep together as the roaring fire begins to dim
  • Other times the Ravenclaw persuading the Slytherin into going crazy in the rain
  • “We’re going to catch colds!”
  • “We’ll get one regardless. The flu’s going around. Come on!”
  • dancing like sugar-wired kids
  • screams and content laughs getting lost in the thunder’s reign
  • Then slow dancing as the Slytherin spins them chivalrously into their arms
  • blissfully passionate kisses while the rain drenches their clothes
  • just before going back inside, holding each other close tightly and just taking time to relish in each other’s love

Originally posted by universexy

  • The Ravenclaw keeping the Slytherin on their toes and vice-versa.
  • what with the witty/sassy comebacks and the urge to come out smarter
  • The Ravenclaw’s Originality and wit being what first captured the Slytherin’s attention
  • The Ravenclaw being awed by their cunning conclusions
  • The Ravenclaw’s creative ideas helping the Slytherin reach their goals and aspirations
  • The Slytherin’s determination and resilience making the Ravenclaw feel more secure with being who they are.

Spanish word’s gender can be a little tricky, and for that reason we need some tips to remember.  Probably you’ve learned that the words ending in “a” are feminine, and this is true most of the times. But we also have some important exceptions, and if you learn them well your Spanish will be so much natural and accurate. (:

Masculine words ending in -a:

Some words that end in -ma:

el problema - problem
el tema - subject
el idioma - language
el sistema - system
el programa - program / TV show
el fantasma - ghost
el drama - drama
el poema - poem
el dilema - dilemma
el panorama - panorama / overview

*Remember this is not a rule. Most of the words that end in -ma are feminine, but these are the most common words ending in -ma that are masculine. Actually these are the words that come from Greek.

Example sentences:

  • No hay ningún problema. - There’s no problem at all.
  • ¿Cuál es el tema de su investigación? - What’s the subject of your investigation?
  • Me gustaría aprender muchos idiomas. - I would like to learn many languages.
  • Somos parte de un mismo sistema. - We’re part of the same system.
  • No me gusta ese programa. - I don’t like that program (TV show).
  • Dicen que hay un fantasma en esta casa. - They say there’s a ghost in this house.
  • No hagas tanto drama. - Don’t make such a drama.
  • Te escribí un poema. - I wrote a poem to you.
  • No encuentro la solución a este dilema. - I can’t find a solution to this dilemma.
  • Ese es el panorama principal de este proyecto. - That is the main overview of this project.

Professions ending in -a that are done by a man:

el poeta - poet
el atleta - athlete
el guía - guide
el florista - florist
el espía - spy
el cura - priest

*If the job is done by a woman we just add the feminine article la(s) or una(s) before the noun, except for ‘cura’. La poeta, la atleta, la guía, la florista, la espía.

Example sentences:

  • Quevedo es uno de los poetas españoles más importantes. - Quevedo is one of the most important Spanish poets.
  • Los atletas llevan una dieta muy estricta. - Athletes have a very strict diet.
  • Preferimos viajar con un guía que nos muestre la ciudad. - We prefer to travel with a guide who can show us the city.
  • Don Francisco es el mejor florista del pueblo. - Mr. Francisco is the best florist in town.
  • La gente está un poco preocupada por los espías enemigos. - People are a little worried about the enemy spies.
  • El cura conoce muy bien la Biblia. - The priest knows the Bible very well.


el día - day
el planeta - planet
el cometa - comet / kite
el mapa - map
el tequila - tequila
el clima - weather

Example sentences:

  • He estado estudiando todo el día. - I’ve been studying the whole day.
  • Me gustaría viajar a otro planeta. - I would like to travel to another planet.
  • El cometa se podrá ver desde la Tierra. - The comet will be visible from Earth. (You’ll be able to see the comet from Earth)
  • Creo que estás viendo el mapa al revés. - I think you’re looking at the map upside down.
  • Un tequila, por favor. - A tequila, please.
  • ¿Cómo está el clima en Guatemala? - How’s the weather in Guatemala?


There are feminine words that begin in “a” or “ha” but we have to write “el“ or “un” before them. This doesn’t turn them into masculine words, this is just to avoid a hiatus. 

For example:

el agua - water // but the plural is: las aguas
el alma - soul // plural: las almas
el ala - wing // plural: las alas
el hacha - axe // plural: las hachas
el hada - fairy // plural: las hadas

Example sentences:

  • Cuida el agua. - Take care of water.
  • ¿A dónde se va el alma cuando morimos? - Where does the soul go when we die?
  • Este pájaro tiene un ala rota. - This bird has a broken wing.
  • Cortaron el árbol con un hacha. - They cut the tree with an axe.
  • Anoche vino el hada de los dientes. - Last night the tooth fairy came.

Espero que esto haya sido de ayuda. ¡Hasta luego!
I hope this was useful. See you!

Almost Three Tails for Comet Encke 

How can a comet have three tails? Normally, a comet has two tails: an ion tail of charged particles emitted by the comet and pushed out by the wind from the Sun, and a dust tail of small debris that orbits behind the comet but is also pushed out, to some degree, by the solar wind. Frequently a comet will appear to have only one tail because the other tail is not easily visible from the Earth.

In the featured unusual image, Comet 2P/Encke appears to have three tails because the ion tail split just near to the time when the image was taken. The complex solar wind is occasionally turbulent and sometimes creates unusual structure in an ion tail. On rare occasions even ion-tail disconnection events have been recorded. An image of the Comet Encke taken two days later gives a perhaps less perplexing perspective.

Credit: Fritz Helmut Hemmerich

A list of things I want for Lena Luthor:

1. Kara is her soft girlfriend. She comes by every morning to bring her a cup of coffee and kiss her softly on the lips. Then when she is almost out of the door, she turns around and races back, kisses her a bit more chastely now and leaves. She does this every morning. Without fail. 

2. Kara picks her up from work most nights. Lena tends to forget the time and often Kara just walks in, scoops her up  and flies them both right out of there. Jess has stopped asking questions on how Lena manages to disappear most nights. Lena has stopped arguing as well, she’d rather be with Kara anyway. 

3. Kara sends her text messages throughout the day, mostly consisting of memes, and Lena doesn’t get a single one. Kara knows this but refuses to explain them to her. Lena often starts kissing her then, straddling her lap and when Kara’s arms wrap around her neck, she pulls back a little and whispers, “explain the meme.”  

4. Sometimes Lena gets shy around Kara. She’s not used to the whole relationship thing and sometimes it scares her how quickly she has fallen. But every time she doubts herself, doubts whether she is deserving enough for this person that is pure light, Kara is there. Kara is always right there to kiss her on the nose and forehead, every kiss accompanied with a whisper of, “I love you. You are enough. You and I deserve this.”

5. Kara makes them watch Mamma Mia at least once every month. And while Lena rolls her eyes at her every time she proclaims that “it’s time.” She secretly loves it, sings along to the songs under her breath and loves the way Kara always ends up with her head in her lap, dramatically singing into the remote held in front of her mouth like a microphone. She loves that her girlfriend is a dork. 

6. Alex Danvers rings her frequently about mathematical or technical issues and she loves that she is being included in this. She signed a million papers at the DEO and knows all the access codes and Alex always calls her an honorary member and it makes her heart swell every time. 

7. She is always invited to game night and Winn always throws peanuts at her whenever she beats him at monopoly. She acts like she is offended every time but it’s always accompanied by a smile. Because she knows she is welcome here. She knows they are her family too now. 

8. Kara shows her the stars whenever there is a clear night. She knows all the formations and names of stars that aren’t even visible from earth. Sometimes she traces those foreign constellations onto the skin of Lena’s arm and it always elicits a shiver where her fingertips brush over her skin. 

9. She asks Kara about Krypton a lot. And Kara always answers, tells her Kryptonian bedtime stories and sings her lullabies in their strange tongue and Lena always sits there, amazed that somehow she’s found this girl even though statistics would have suggested it to be impossible.She knows that the possibility of Kara being in her life was close to zero, but somehow space has brought her to her anyway. And sometimes, when Kara is asleep, she steps to their bedroom window, looks at the full sky above them and whispers a silent thank you to the stars for keeping Kara safe on her journey to her, for guiding her home.

10. Lena visits the holograph of Kara’s mother a lot and asks her to teach her Kryptonian. When she proposes to Kara, she hires a planetarium and puts up all the Kryptonian constellations on its dome. And when she asks the important question she does so in her girlfriend’s native language. Kara cries for about ten minutes before kissing her senseless, tasting like salt and happiness and home, whispering, “yes, oh Rao, yes,” over and over again.

Blow your mind with these 50 facts about Universe
  • Saturn would float if you would put it in water.
  • If you would place a pinhead sized piece of the Sun on the Earth you would die from standing within 145 km (90 miles) from it.
  • Space is not a complete vacuum, there are about 3 atoms per cubic meter of space.
  • Only 5% of the universe is made up of normal matter, 25% is dark matter and 70% is dark energy.
  • Neutron stars are so dense that a teaspoon of them would be equal to the weight of the entire Earth’s population.
  • The Sun is 400 times larger than the Moon but is 400 times further away from Earth making them appear the same size.
  • The star Lucy in the constellation Centaurus is a huge cosmic diamond of 10 billion trillion trillion carats.
  • Seasons last 21 years on Uranus while each pole has 42 years of sunlight followed by 42 years of darkness….

Keep reading


This astronomical watch accurately tracks the position of the six planets visible from Earth. You can look down at your wrist at any time and know exactly where you are in the universe. (Also tells the time just in case you wanted that too) See more here

Wait, a comet has tails?! Yes!! Normally, a comet will have two tails: an ion tail of charged particles emitted by the comet that are pushed out by the solar wind coming from the Sun, and a dust tail of small debris that orbits behind the comet but is also pushed out, to some degree, by the solar wind. 

Frequently a comet may sometimes appear to have only one tail because the other tail is not easily visible from the Earth. 

In the featured unusual image,Comet 2P/Encke appears to have three tails because the ion tail split into 2 close to the time when the image was taken. The complex solar wind is occasionally turbulent and sometimes creates unusual structure in an ion tail. 

Questions? Ask ask ask!! 

Image Credit & Copyright: Fritz Helmut Hemmerich

Dorrit Hoffleit (1907-2007) was a senior research astronomer for Yale University, best known for her work on several editions of the Bright Star Catalogue, an index of every star that is visible from Earth with the naked eye.

She started working as an astronomer for the Harvard College Observatory, and obtained a PhD from Radcliffe College. She was the director of the Maria Mitchell Observatory, where she ran summer programmes for students who often went on to pursue careers in the field. In addition to the Bright Star Catalogue, she worked on The General Catalogue of Trigonometric Stellar Parallaxes, a vital tool for understanding the kinematics of the Milky Way Galaxy.

Photo of the Week

This week’s ‘Photo of the Week’ features a beautiful tracked photo of the Pleiades Cluster. Taken by talented amateur astrophotographer Ray Congelosi, this image consisting of 24 one-minute exposures happens to actually be his first tracked photo as well.
 The Pleiades star cluster – also known as the Seven Sisters   or M45 – is visible from almost anywhere on Earth. This open star cluster is one of the closest star clusters in relations to Earth.
 For more spectacular photos, be sure to check out Ray’s Instagram @inside_the_galaxy at .

vulcan is sixteen light years from earth.
meaning: light from vulcan takes sixteen years to travel the immense distance between the two planets.
meaning: vulcan would still be visible from earth, a faint and distant pinprick of light amongst a sea of others, for sixteen years after its destruction, despite it being gone forever.

it’s fascinating how every vulcan is an earth sign.. how did they pull that one off. especially on a distant planet where the constellations visible from earth have no bearing whatsoever and also implying ponn far occurs for a third of the (sexually mature) population at 3 points in the year. amazing.

okay JAFAX I get that minimalism in web design is a popular thing these days

but that means “reduce complexity” not “make the form as tiny as possible”


NASA’s Cassini reveals the full glory of Saturn’s rings

“Composed of 99.9% water-ice, the ring system has thousands of thin gaps, and was thicker and more varied in the past. The once-rocky material has coalesced into moons, but the watery rings will remain for as long as our Solar System exists.”

In the 1600s, the earliest telescopes saw that Saturn had “ears,” while later observers all the way back then finally saw their true nature: a ringed system with complex gaps, bands and colorations throughout. Since then, Saturn’s rings have been a source of wonder and puzzlement to skywatchers everywhere. The only ring system visible through most telescopes from Earth, Saturn’s main rings measure more than 70,000 km long, yet are no more than 1 km in thickness. Once thought to have only two gaps in them, the Cassini spacecraft has revealed over a thousand, teaching us that Saturn’s rings are ancient – likely as old as the planet itself – and will likely continue to exist for as long as our Sun shines.

Go get the full story in a glorious set of pictures from Cassini and no more than 200 words on today’s Mostly Mute Monday!

just-a-random-nerd  asked:

I can in fact tell you approximately where Homeworld is in the night sky. It's stated to be in another galaxy and Pearl has pointed it out to Steven. There's three galaxies visible from earth. Two dwarf galaxies, known as the Magellanic clouds and the Andromeda galaxy. While any are a possibility, I suspect one of the clouds due to distance from us and they're close enough together that you can cover them both with one kiss.


Muse - Stardust

Before Stanford Pines, throughout the history of humankind, Bill Cipher struck countless deals with many great minds.
Some more memorable than others.

A/N: Here’s just a little something I wrote on a whim. I might write more based on more historical figures if/when I get more ideas. If I do, here’s the tag I’ll use to post them.
Based on Bill’s backstory as detailed in Flat Dreams and Flat Minds.


Hypatia of Alexandria


“I had to get the coordinates to you. Now that you have both those and the equation, you can actually meet the Sphere. Get it to do something.”

“Hey now, don’t heap it all on me! We can both-”

“They’re looking for me. Coming with you would just put everything at risk. Bill, please. You need to go now.”

“… They’ll kill you when they find you. Not without torturing you for information first.”

“I don’t plan on being captured alive.”


415 A.D.

“If you stay here, you’ll burn.”

A few moments of silence followed. A couple of scrolls idly floated by him, but Bill Cipher ignored them; he ignored the whole content of that mindscape and just focused on its owner. Who, on the other hand, wasn’t even looking at him: her eyes were on the stars above them, constellations that were never visible from Earth and would never be.

“Are you listening to me? They’re gonna burn you, and that’s going to be the merciful part. I’ve seen it.”

Hypatia of Alexandria turned her gaze from the stars very slowly, and looked at him with calm, brown eyes. 

Keep reading


Fay “Marigold” Shepard // Earthborn // Sole survivor

FIRST PRIZE OF MY ART GIVEAWAY WENT TO @liarasbitch and she asked me to draw her BEAUTIFUL shepard!!!!! hope you like it and she was so fun to draw omg!!!! <3