The Solar System Archive

Sciency Words: The Anomalous Precession of the Perihelion of Mercury

If you’re anything like me, you’ve probably looked at planetary orbits and asked yourself: why does

Sciency Words: Lobate Scarps (Is Mercury Shrinking?)

Since the Solar System formed 4.5 billion years ago, Mercury has decreased in size by about

Sciency Words: Hill Sphere (Why Doesn’t Mercury Have a Moon?)

Mercury does not and probably cannot have a moon. Why? Because the Sun is a bully.

Colonizing Mercury: How To Get There

In several recent posts, I’ve said that nobody wants to live on Mercury. It’s too hot.

Sciency Words: Volatile

Many volatiles are so eager to become gases that they’ll sublimate, meaning they’ll transform from solid

Sciency Words: SOHO

SOHO is positioned between the Sun and Earth, and its mission is to monitor and study

Sciency Words: Moreton Waves – Sun Surfing

Okay, so you can’t really go surfing on the Sun, but if you could, the Sun’s

Starting Point: The Cruithne Report

It was a slow news week and somehow a report about poor standards of safety on

Sciency Words: The Carrington Event

Here’s the good news: the world didn’t end.

Sciency Words: Eccentricity

According to Kepler’s laws, no planet has a perfectly circular orbit. The “established norm” is

The Solar System as a Patchwork Quilt

It's surprising how small (or large) some of the solar system's more interesting moons are compared

Artifexian: Formation of the Solar System

Before we start baking our apple pie, let's take a look at grandma's old recipe book

Better than Starships: Satellites

Steven Lyle Jordan on why abandoning Earth's resources is a bad idea.

Colonizing Space 1970’s Style

Just look at all the cool space stuff NASA will have built by the time you're

Don’t Eat Yellow Moon Dust

A lack of oxygen, micro-gravity, explosive decompression, and extreme levels of radiation aren’t the only dangers

Featured Story: Learning Curve

The screechy monkey living in the back of my head chose that moment to take charge

Inspiration Gallery #1213

This month's Inspiration Gallery showcases the work of digital artist Adam Burn, and is inspired by

Gravity Balloons: Colonizing the Asteroid Belt

Maybe a civilization in the center of Phobos will be more pivotal than one on the

Story Idea: The Trespassers

When a new moon appears in orbit around Jupiter, mankind wakes up to an uncomfortable truth.

Featured Story: The Planet Brokers

Humanity agrees to sell the planet Venus to vast and timeless alien beings in this quirky