Roche limit

Etymology
Named after French astronomer, who first calculated the limit in 1848.

Noun

 * 1)  The closest a satellite can approach its parent body before the gravitational forces holding it together are overwhelmed by tidal forces pulling it apart.

Translations

 * French: limite de Roche
 * German: Rochegrenze
 * Italian: limite di Roche
 * Russian: преде́л Ро́ша