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Category: Conditions for habitable planets

How planets die: climate catastrophe!

February 11, 2019

If trees could scream, would we be so cavalier about cutting them down? We might, if they screamed all the time, for no good reason. — Deep Thoughts by Jack Handey This series is about how planets die — it is introduced here. Earth is a cosmic freaking paradise. Just look at our neighboring planets: … More How planets die: climate catastrophe!

11 Comments How planets die: climate catastrophe!

How planets die: Fried by tidal volcanoes

February 8, 2019

If you ever drop your keys into a river of molten lava, just let them go because, man, they’re gone. — Deep thoughts by Jack Handey This series is about how planets die — it is introduced here. What do you think of when you hear the word tides? Ocean waves?  The Moon?  Maybe sitting … More How planets die: Fried by tidal volcanoes

10 Comments How planets die: Fried by tidal volcanoes

How planets die: When good Jupiters go bad

February 6, 2019

Gas giants have murdered rocky planets (or their building blocks) around ~5 billion stars in our galaxy! (Usually by dropping them onto their Suns!). … More How planets die: When good Jupiters go bad

18 Comments How planets die: When good Jupiters go bad

How planets die

February 4, 2019

Just like people, planets are born and they die. We know how people die. But google “how planets die” and you’ll get the wrong answer. … More How planets die

18 Comments How planets die

Can moons orbit moons? — the poem

January 23, 2019

Can moons orbit moons? wondered Juna and I.
Some planets have moons, you know, up in the sky
But none of those moons has its own moon around it.
When Juna’s son learned this he just was astounded! … More Can moons orbit moons? — the poem

7 Comments Can moons orbit moons? — the poem

Can moons have moons?

October 9, 2018

Planets orbit stars. Moons orbit planets. But no moons have their own moons (let’s call them submoons). Why is that? … More Can moons have moons?

35 Comments Can moons have moons?

Real-life Sci-Fi World 14: A horseshoe planetary system

July 2, 2018

One star. Two planets share an orbit, with one following a horseshoe-shaped path around the other. Boom! … More Real-life Sci-Fi World 14: A horseshoe planetary system

16 Comments Real-life Sci-Fi World 14: A horseshoe planetary system

The Million Earth Solar System

June 1, 2018

Welcome to what might very well be the culmination of the Building the Ultimate Solar System series. Teaser: the system built in this post could also be called the Ultimate Engineered Black Hole Eyeball Ringworld Solar System (if you’re really not into the whole brevity thing). Our Solar System has one habitable planet. A few … More The Million Earth Solar System

46 Comments The Million Earth Solar System

The Black Hole Ultimate Solar System

May 30, 2018

What happens when the central body in a planetary system is replaced with a million-Sun black hole? … More The Black Hole Ultimate Solar System

21 Comments The Black Hole Ultimate Solar System

The Black Hole Solar System

May 28, 2018

Planets are kind of my thing.  But black holes are awesome too. I mean, they can just suck you right in…  (I will never apologize for my bad jokes!) I want to bring black holes and planets together.  In this post, I’ll first introduce black holes.  Then we’ll build the Black Hole Solar System. In … More The Black Hole Solar System

20 Comments The Black Hole Solar System

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