#!/usr/bin/env node;
/******************************************************************************
 * This program estimates the volume of the Milky Way Galaxy.
 * 
 * Copyright © 2020 Richard Lesh.  All rights reserved.
 *****************************************************************************/

const Utils = require('./Utils');

const BULGE_RADIUS = 10000;
const DISK_RADIUS = 52850;
const DISK_THICKNESS = 1000;

const main = async () => {
    const DISK_VOLUME = Math.PI * Math.pow(DISK_RADIUS - BULGE_RADIUS, 2.) * DISK_THICKNESS;
    const SPHERE_VOLUME = 4.0 / 3.0 * Math.PI * Math.pow(BULGE_RADIUS, 3.0);
    const MILKY_WAY_VOLUME = DISK_VOLUME + SPHERE_VOLUME;
    console.log(Utils.format("The Milky Way volume \u2248 {0:.3e} light-year\u00b3", MILKY_WAY_VOLUME));
}
main().catch( e => { console.error(e) } );