Real-life sci-fi world #4: Earth around a brown dwarf

Welcome to Real-life Sci-fi worlds.  We are using science to explore life-bearing worlds that are the settings for science fiction stories.  Up today: an Earth-like planet orbiting a brown dwarf. Setting Planets have been found orbiting all kinds of stars.  Stars like the Sun.  Stars brighter and fainter than the Sun.  Giant stars.  Planets have…

Giraffes and planets

Giraffes are covered in patches.  The patches are brown and the space in between the patches is white.  Everyone knows this. Here is something you probably didn’t know: you can see those patches in infrared light.  In simple terms, infrared light measures heat (at least at the temperatures we are used to in everyday life). …