HI INTERNET PEOPLE!!!!! I may or my not want to see other people post cool things about space here. Please info dump about new things too!! I'd be interested to hear :O easy stuff, complex stuff, new discoveries, old news, whatever :O
Here are some photos I took too :3
I'll start:
The timescape theory for dark energy is something I thought was interesting!
Okay, so...!!
1: the universe is expanding, but the expansion is accelerating, and we do NOT know why.
2: the universe's structure is like a big stringy web? idk go look up videos of the cosmic web and simulations of the universe, it's hard to describe ;-;
so the timescape hypothesis suggested that because the giant voids in between whatever the dense parts are called, expand faster and faster, and so universal expansion would be primarity because of them. It's thought that voids have way less gravitational influence, so maybe as the dense parts get denser, they experience time slower as they fall into their own gravitational well (remember relativity and stuff), while the voids keep expanding at the normal rate. So from OUR point of view, as we keep falling in and slowing down, these voids look like they're expanding faster and faster.
Claiming "the density fluctuations are actually significant enough to cause a universal acceleration in expansion" unfortunately disagrees with one of the core assumptions of our current best model of the universe, Lambda-CDM, so disproving it would require some stellar evidence ;-;
BIG "unfortunately" is that the study that claimed to, I think in part, validate the timescape model did use data that's not accurate quite yet. And lots more other types of evidence more strongly supports Lambda-CDM that we haven't tested with Timescape. Not ONLY that, but the time difference between superclusters and supervoids is only be thousands of years, but timescape is suggesting it would have to be billions! It's sad though, cause timescape theory sounds so elegant!
But hey, we gotta disprove wrong things to get to the right things, so we shall see how things play out as more research comes in!
OMG I FORGOT THE PHOTOS (⁄ ⁄•⁄ω⁄•⁄ ⁄)
this is mars behind the moon (it's twice as big as the moon so imagine how far it has to be)
and old one, the double cluster, between Perseus and Cassiopeia
Here are some photos I took too :3
I'll start:
The timescape theory for dark energy is something I thought was interesting!
Okay, so...!!
1: the universe is expanding, but the expansion is accelerating, and we do NOT know why.
2: the universe's structure is like a big stringy web? idk go look up videos of the cosmic web and simulations of the universe, it's hard to describe ;-;
so the timescape hypothesis suggested that because the giant voids in between whatever the dense parts are called, expand faster and faster, and so universal expansion would be primarity because of them. It's thought that voids have way less gravitational influence, so maybe as the dense parts get denser, they experience time slower as they fall into their own gravitational well (remember relativity and stuff), while the voids keep expanding at the normal rate. So from OUR point of view, as we keep falling in and slowing down, these voids look like they're expanding faster and faster.
Claiming "the density fluctuations are actually significant enough to cause a universal acceleration in expansion" unfortunately disagrees with one of the core assumptions of our current best model of the universe, Lambda-CDM, so disproving it would require some stellar evidence ;-;
BIG "unfortunately" is that the study that claimed to, I think in part, validate the timescape model did use data that's not accurate quite yet. And lots more other types of evidence more strongly supports Lambda-CDM that we haven't tested with Timescape. Not ONLY that, but the time difference between superclusters and supervoids is only be thousands of years, but timescape is suggesting it would have to be billions! It's sad though, cause timescape theory sounds so elegant!
But hey, we gotta disprove wrong things to get to the right things, so we shall see how things play out as more research comes in!
OMG I FORGOT THE PHOTOS (⁄ ⁄•⁄ω⁄•⁄ ⁄)
this is mars behind the moon (it's twice as big as the moon so imagine how far it has to be)
and old one, the double cluster, between Perseus and Cassiopeia
