Astronomy
The Role of Tidal Locking in Defining Surface Environments on Exoplanets
Quick fact
Astronomers estimate that most potentially habitable exoplanets orbiting small, cool red dwarf stars are tidally locked, meaning one side always faces the star in eternal day while the other is in permanent night.
Why this is interesting
You've heard of the Moon always showing its face to Earth — but what if an entire planet did that with its star? How would that world look, and could it still host life?