Saving you a click: Sun like stars turn into a red giant which is hard to live near and destroys nearby planets. After that red giants turn into white dwarfs which are possible to survive near but normally there aren’t any planets left to live on.
The article is about them discovering a jupiter size planet around a white dwarf
Thanks. If anybody is interested, I saved this article about said planet. It does, imho, a good job of going a bit deeper into the paper without beeing to technical (speaking from a lay persons perspective)
Not an expert but I imagine it’s the ocean depth. If the atmosphere above determines the temperature, and the ice at the surface acts as an insulator, the deeper parts of the ocean don’t get cold enough to freeze.
This scenario is hard to stomach too, because such large, lumpy gas clouds should fracture into stars before forming a black hole.
Seems to make sense that in the denser early universe that pressure wasn't quite enough to overcome just how much mass these early clouds had hanging around so close.
I have no answer but I want to help the post gain attention by putting a comment in here.
I would be super interested in the answer as well, though again I have no idea what it might be or even what factors go in to the equation. I may be off in my assumption (and you may have already accounted for it) but I imagine the calculations for a satellite orbiting the body whose horizon is the subject must be different by at least one term from the calculations of governing a body orbiting the same mass as the horizon-owning-body
It’s reflected light from the Sun as they orbit, not lights installed on them. Maybe they can use a non-reflective coating or something for new ones though
Unfortunately this is a rather open ended question. We’re constantly discovering new things. The James Webb Space Telescope has only been fully functional for a short while but has already provided tons of new info.
Generally knowledge like this is similar to starting with a really low res photo that gets progressively more high res with each decade.
For example, the band of the Milky Way galaxy we can see in the sky was suggested to be made of stars itself in 5th Century BC by Democritus. In 964 AD, Abd al-Rahman al-Sufi recorded observations on the Andromeda Galaxy and Large Magellanic Cloud. 1610, Galileo confirms the Milky Way band is indeed made of stars. 1923, Edwin Hubble proves galaxies are “island” clusters of stars.
We’ve also had to rely on Newtonian Physics to describe things for a long time, but then it started being noticed that while consistent for practical things on earth, they couldn’t accurately predict things on the scale of the universe. Einstein’s general theory of relativity helped explain most of this, but still has some gaps.
Black holes were proven in the last century, but we got the first visual confirmation just a few years ago. Redshifting proving that galaxies are moving away from each other is also in the last century.
So at this point we have measurements on the general chemical make up of the universe, its size, its rate of expansion, the formation of galaxies, and how old it is starting from a specific event.
These measurements are ranges though, and those ranges get more narrow the better our instruments and the new info we get. It’s like guessing the number of jelly beans in a jar. Your first guesses can be way off because you have to eyeball, but then you’re allowed to measure the volume of the jar and the volume of a single jelly bean. You’ll be way closer than before. Then you’re allowed to measure the weight of that jelly bean and that jar. You’ll probably be a little closer. Then you’re given a variety of jelly beans to measure, so you get averages instead of basing everything on a jelly bean that might be an outlier.
So, in a binary way we don’t have the exact right answer for a lot of the universe, but each new discovery trends toward us being more correct than we were before.
Looking forward to at least half an hour on this from DR Becky. I’m very curious about the specifics of how they plan on detecting all this dark stuff.
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