Category Space and Ufo

Our Large, Adult Galaxy Is As Massive As 890 Billion Suns

Our home galaxy has a new, super-precise mass measurement: about 890 billion times the mass of our sun. That’s 3.9 tredecillion lbs. (1.8 tredecillion kilograms), a tredecillion being a 1 with 42 zeros after it, or 1,000,000,000,000,000,000,000,000,000,000,000,000,000,000. That amounts to…

On Mars, Auroras Glow All Summer Long in UV Light

A solar wind proton approaches Mars at high speed; it steals an electron from an escaped Martian hydrogen atom and passes through a magnetic field surrounding Mars. The now-neutral atom then enters the planet’s atmosphere and collides with gas molecules,…