In the Doctor Who episode "The End of Time Part 2",
Gallifrey is pulled out of the Time War alongside the Earth
(has it been long enough I don't need a spoiler? eh, I won't take the chance)
Gallifrey is visually several times the size of Earth, as is shown here.
As you can see, Gallifrey is no laughing manner. But wouldn't Earth's orbit be pulled apart? Even for the five or ten minutes it lasts, shouldn't Gallifrey wreak havoc on Earth's orbit, as massive bodies tend to do? As the picture shows, the moon is probably gone, as Gallifrey would present a larger energy source, and thus larger attraction. Especially if it was in the way when Gallifrey made its entrance, as the picture would suggest. How does Earth escaped unscathed from this orbital confrontation?