Linked Questions

27 votes
8 answers
7k views

Would going underground into a planet offer protection from a supernova? [duplicate]

I am considering a scenario where people are anticipating the star of their system going supernova, which would be somehow triggered by an advanced, hostile alien race. However, the people cannot ...
skyprezzel's user avatar
95 votes
22 answers
14k views

My star will explode as a supernova. What can I do in order to ensure that my planet survives that?

I am posting this in behalf of a friend of mine from a distant world. Here is his message properly translated to English: Hi, Sol3αlings1. My name is $ѬӚᕕƨ⧬௵44ħ$. We are peacefully and we need your ...
Victor Stafusa - BozoNaCadeia's user avatar
12 votes
15 answers
10k views

Why might a Death Star laser be red? [closed]

In the distant future, the Earth Federation decided to turn our Moon into a Death Star which has a powerful laser cannon which produces a high energy laser beam capable of obliterating a terrestrial ...
user6760's user avatar
  • 48k
12 votes
7 answers
5k views

Earth-like planet orbiting neutron star?

A neutron star is a type of compact star that can result from the gravitational collapse of a massive star after a supernova. Neutron stars are the densest and smallest stars known to exist in the ...
Quiquȅ's user avatar
  • 3,317
12 votes
5 answers
3k views

Could life evolve in the degenerate era of the universe?

Our universe is incredibly young, relative to its total life span. How young? Well, it contains stars. Giant balls of readily fusing hydrogen and helium that give off a pleasant glow, suitable for ...
ckersch's user avatar
  • 46.3k
9 votes
3 answers
906 views

What stellar number density would two galaxies have to have for another star to collide with the Sun during a galactic merger?

Note: This sprung from some annoyance I've had with the hard-science tag, and the goal of this question is to attract some really high-quality answers that any question using the tag deserves. An ...
HDE 226868's user avatar
  • 101k
5 votes
3 answers
394 views

Is it possible for a planet oddly similar to the ones we have orbiting our sun to make a shield to protect an interstellar space ship?

The situation is bad, human kind have waited to the last minute (literally) with building the huge ship that is supposed to save man kind. The sun goes nova, nothing can stop that but the ship has to ...
Magic-Mouse's user avatar
  • 5,682
5 votes
5 answers
900 views

Stable orbit around a magnetar

I'm working on a setting for an RPG, and I'm trying to build my planet so it's unique and interesting, but also semi-plausible. My question is, could you have a planet in stable orbit around a ...
nightninja's user avatar
2 votes
4 answers
362 views

How would a neutron star affect the habitability of planets orbiting a companion star?

A star system consisting of two stars forms, with one being more massive. As such, the larger star soon exhausts its fuel and ends up as a neutron star. The secondary star has a semi-major axis of 700 ...
Martin L. Dark's user avatar
3 votes
1 answer
440 views

How close to a supernova can a planet retain an atmosphere?

I already read Can a planet survive a supernova? but that just addresses some kind of planet-remnant remaining in orbit. Parameters: Binary system. One component is a Sun-like G-type star with ...
cometaryorbit's user avatar