To celebrate the opening of Avatar 2, I made a series of slides to give a little more astrophysical context to Pandora. And, like the movies, it’s all about the visuals… … More Astrophysics of Pandora, the moon-world from Avatar
Just like a doofus with the remote control bouncing between two TV shows, planets can bounce between stars in a binary system… … More Star-hoppers: planets bouncing between binary stars
Here’s something brand new – we made a big splash!
A pile of free-floaters just dropped with a crash!
A hundred new rogue planets! Yup, we just found ‘em
They orbit among stars instead of around ‘em. … More A flock of free-floaters
The time capsule must serve as a beacon. Any other civilization that detects it should immediately suspect that it is of artificial origin. And it needs to survive for countless billions of years. … More A cosmic time capsule
This post is an adventure in world-building. I use N-body simulations to find orbital configurations of planetary systems that (I think) are completely new, pretty awesome and unexpected. It involves cohorts of co-orbital planets… … More Cohorts of co-orbital planets
Have you ever been lost in the desert?
Stumbling along the sand dunes, the Sun beating down on you, your mouth sticky and dry. All you can think about is water… … More Second chance planets 3: cosmic rain on dried-out worlds
Sometimes removing the outer atmosphere from a Neptune-like planet can reveal an ocean paradise! … More Second chance planets 2: Pre-terraformed, habitable evaporated cores of mini-Neptunes
A while back I wrote a series of posts called How planets die. It was about all the ways planets can be sterilized or destroyed. I even made a “planetary death scale”. Gruesome stuff. Let’s liven things up with a new mini-series on Second-Chance Planets. These are planets that get a second chance at life. … More Second chance planets: Iceball worlds that thaw out when their stars go red giant
Where would we be without the occasional asteroid crashing into the Earth? … More How planets die: pulverized in a deluge of asteroids and comets!
Just like people, stars age. Their planets go along for the ride and are often killed or maimed in the process…. … More How planets die: roasted, toasted and swallowed by their evolving stars!