science

th1sgu7 asked:

I had a question regarding dark energy and dark matter. What exactly is dark matter, and what separates it from dark energy? I also was wondering about some of the theories surrounding this topic. I'm extremely curious about this matter. Thanks!

science answered:

Dark matter is matter that doesn’t interact with light or other kinds of radiation, at least not to any degree that we can measure. Thus it is invisible, not just to the eye but to any of our instruments. Its existence is hypothesized because it would explain the discrepancy between the mass of galaxies as calculated by the well-known kinds of matter that can be observed because it interacts with light, and their mass as calculated by their effects on gravity. There must be much more dark matter than ordinary matter if the predictions of relativity are true, and general relativity is a very robust theory.

Dark energy is a hypothesized mechanism to explain the observation that the universe is accelerating at an expanding rate. Dark energy could either come in the form of a energy spread evenly throughout space and time, which can be captured by a so-called “cosmological constant,” or it could be a field that varies in intensity across space and time.

If these hypotheses are correct, dark energy accounts for the majority of the mass-energy of the universe. It would be very thinly spread, so that at any point in the solar system there will be more matter than dark energy, but there is so much near-empty space out there that dark energy still accounts for more of the universe’s constituency if it is uniformly spread out, not just where there is lots of matter, such as in a solar system, but also where there is very little, such as in interstellar space. Following dark energy, there would be dark matter, and then ordinary matter, making up maybe only 5% of the whole universe.

homosexual-giraffe
highonvodka:

themixedbagofspooky:

spoopy-len-in-a-dress:

riningear:

doryishness:

displaced-angel:

ryedragon:

inritum:

reblog and make a wish!this was removed from tumbrl due to “violating one or more of Tumblr’s Community Guidelines”, but since my wish came true the first time, I’m putting it back. :)

OH MY FUCKING GOD, IT’S BACK ON MY DASH.
THIS SHIT WORKS OKAY, I AM DEAD SERIOUS.
The last time I saw this on my dash, I didn’t think it would happen, so jokingly I wished I could go to a fun. concert.
AND GUESS WHAT, I WENT TO A FUCKING FUN. CONCERT.
THIS SHIT WORKS, TRY IT.

YOOOOOOO
I SAW THIS ON MY DASH THE OTHER DAY AND THOUGHT “ITS WORTH A TRY” SO I WISHED I COULD GET A 3DS
LITERALLY LIKE 4 DAYS LATER MY DAD SENT ME A PICTURE OF THE 3DS XL HE BOUGHT FOR ME WHILE I WAS AT SCHOOL
IM STILL FREAKING OUT ABOUT THIS

holy fuck, I didn’t expect this to work, I was like psh, whatever it’s just a quick reblog, but I wished my Dad would actually respond back to me AND HE FUCKING DID A FEW DAYS LATER, I GOT A FUCKING TEXT FROM MY DAD TODAY WHO HASN’T SPOKEN OR RESPONDED TO ME IN MONTHS HOLY FUCK WHAT IS THIS MAGIC IT WORKS. 

I WANTED TO SEE MY BOYFRIEND AND I DIDN’T THINK I’D GET DAYS OFF BUT THIS WEEKEND I’M HEADING UP THERE??? THIS IS CRAZY SHIT 

SO LIKE I JOKINGLY WISHED FOR MY OWN LEN KAGAMINE AND THEN LIKE A WEEK LATER I GOT A LEN NENDOROID??? H ELP

WTF OKAY SO THIS SHOT ACTUALLY WORKS BECAUSE WHEN I WISHED, I HAD WISHED MY CRUSH WOULD LIKE ME BACK AND GUESS WHAT? I HAVE A BOYFRIEND NOW. WHAT THE HELLLLL?????

ok I’ve said this before but IM DOING IT AGAIN THE FIRST TIME I SAW THIS, MY WISH DID COME TRUE SO I REBLOGED AGAIN AND SAID IT IN THE TAGS BUT THEN I WISHED FOR SMTH ELSE AND IT LITERALLY LITERALLY HAPPENED LIKE A COUPLE DAYS LATER WHAT THE HELL SO NOW IM WRITING THIS HERE FOR YOU BC I DONT BELIEVE IN THIS CRAP BUT STILL IT’S AN AWFULLY BIG COINCIDENCE

highonvodka:

themixedbagofspooky:

spoopy-len-in-a-dress:

riningear:

doryishness:

displaced-angel:

ryedragon:

inritum:

reblog and make a wish!


this was removed from tumbrl due to “violating one or more of Tumblr’s Community Guidelines”, but since my wish came true the first time, I’m putting it back. :)

OH MY FUCKING GOD, IT’S BACK ON MY DASH.

THIS SHIT WORKS OKAY, I AM DEAD SERIOUS.

The last time I saw this on my dash, I didn’t think it would happen, so jokingly I wished I could go to a fun. concert.

AND GUESS WHAT, I WENT TO A FUCKING FUN. CONCERT.

THIS SHIT WORKS, TRY IT.

YOOOOOOO

I SAW THIS ON MY DASH THE OTHER DAY AND THOUGHT “ITS WORTH A TRY” SO I WISHED I COULD GET A 3DS

LITERALLY LIKE 4 DAYS LATER MY DAD SENT ME A PICTURE OF THE 3DS XL HE BOUGHT FOR ME WHILE I WAS AT SCHOOL

IM STILL FREAKING OUT ABOUT THIS

holy fuck, I didn’t expect this to work, I was like psh, whatever it’s just a quick reblog, but I wished my Dad would actually respond back to me AND HE FUCKING DID A FEW DAYS LATER, I GOT A FUCKING TEXT FROM MY DAD TODAY WHO HASN’T SPOKEN OR RESPONDED TO ME IN MONTHS HOLY FUCK WHAT IS THIS MAGIC IT WORKS. 

I WANTED TO SEE MY BOYFRIEND AND I DIDN’T THINK I’D GET DAYS OFF BUT THIS WEEKEND I’M HEADING UP THERE??? THIS IS CRAZY SHIT 

SO LIKE I JOKINGLY WISHED FOR MY OWN LEN KAGAMINE AND THEN LIKE A WEEK LATER I GOT A LEN NENDOROID??? H ELP

WTF OKAY SO THIS SHOT ACTUALLY WORKS BECAUSE WHEN I WISHED, I HAD WISHED MY CRUSH WOULD LIKE ME BACK AND GUESS WHAT? I HAVE A BOYFRIEND NOW. WHAT THE HELLLLL?????

ok I’ve said this before but IM DOING IT AGAIN THE FIRST TIME I SAW THIS, MY WISH DID COME TRUE SO I REBLOGED AGAIN AND SAID IT IN THE TAGS BUT THEN I WISHED FOR SMTH ELSE AND IT LITERALLY LITERALLY HAPPENED LIKE A COUPLE DAYS LATER WHAT THE HELL SO NOW IM WRITING THIS HERE FOR YOU BC I DONT BELIEVE IN THIS CRAP BUT STILL IT’S AN AWFULLY BIG COINCIDENCE