What is Shooting the Moon in Hearts?

Short Answer
Shooting the Moon is capturing all 26 penalty points in a single hand: all 13 hearts (1 point each) plus the Queen of Spades (13 points). Instead of receiving 26 points yourself, each opponent gets 26 points added to their score.

How Scoring Works

When you successfully shoot the moon:

Example

You capture 12 hearts and the Q♠ (25 points). An opponent takes one heart (1 point). You get 25 points. They get 1 point. The moon shot failed completely.

When to Attempt It

Signs you might be able to shoot:

Defending Against the Moon