All Questions
7
questions
3
votes
1
answer
542
views
Replacing the sun with an type A star (Fomalhaut) in a fantasy solar system where there is an habitable planet
Lets says there is a planet in the goldilocks zone of a type A star (luminosity of 16 and mass of 1.9 (like the star Fomalhaut))
How far would the type A star need to be from the planet and how would ...
- 632
4
votes
2
answers
940
views
What would happen if a neutron star approached the solar system?
Given its enormous eletromagnetic field and gravity( and probably gravitational waves would be very powerful) what would happen if a neutron star approached Earth? What if approached just by few light ...
- 1,899
3
votes
2
answers
831
views
Is it possible for a future civilization to concentrate the galaxies (or some of them) of the universe?
In the world I describe there is not much time left before the expansion of space takes its toll. Galaxies are already accelerating away from each other on a negatively curved spacetime. The expansion ...
4
votes
1
answer
180
views
What impact would a white dwarf-neutron star collision have on a civilization on a planet orbiting the white dwarf?
An advanced civilization lives on an Earth-like planet orbiting a white dwarf. Their star is on a collision course with a neutron star. I imagine this collision will cause a supernova, which will ...
- 814
5
votes
3
answers
283
views
Life in the water/snow line of a protoplanetary accretion disc?
So I was reading this article recently, titled Stellar Outburst Brings Water Snow Line into View: http://www.eso.org/public/news/eso1626. In short it's about a protoplanetary accretion disc around a ...
- 4,948
2
votes
5
answers
255
views
Plausible way for the Sun to lose huge amounts of mass?
So, I'm writing a set of short stories (i.e. in the "Martian Chronicles" format). It was going to be centered around life on Earth through the sudden dissapearance of the Sun, but after surprinsingly ...
- 47
6
votes
2
answers
810
views
How much energy would it take to ignite a brown dwarf?
The Halo video game's extended universe book Halo: Evolutions describes the Battle of Psi Serpentis, in which a superjovian planet is converted into a brown dwarf via massive nuclear bombardment of ...
- 8,102