1980 Looking at the Big Sky 2558

Ad astra ut vigeamus

Looking at
the Big Sky

☰ Menu


2024 Apr 03

Here are some useful tools i made for my own reference while worldbuilding. They are only loosely accurate and probably contain bugs and errors. If you are an astrophysicist and you use this to plan your mission it is your own fault if it crashes.

Communications time calculator

Three hundred million metres per second — it’s not just a good idea; it’s the law!

Sending a message from to at UT would take about…
11 minutes, 42 seconds
Other dates around then
3 days ago 11m 51s
2 days ago 11m 48s
Yesterday 11m 45s
Today 11m 42s
Tomorrow 11m 39s
In 2 days 11m 36s
In 3 days 11m 33s

Porkchop plotter

A porkchop plot shows how expensive a trip from one planet to another will be in terms of delta-v1 depending on when you set out and when you arrive. This doesn’t matter so much in the outer system, where most transport is via titanic torqued-up torchships that can get you anywhere, any time, so long as you don’t point the exhaust the wrong way and kill millions of people, but in the inner system, where distances are comparatively lesser, ships less powerful, and waiting times not so bad, waiting for the right launch window is everything.

I would like to get from to , departing in .

Leave a comment

    Please be nice. Comments may be edited for proper spelling and capitalisation, because i’m a pedant. Basic formatting: *bold*, /italics/, [//satyrs.eu links]→ More