Philosophers and astronomers have long speculated about our starry frame, attempting to create a larger vision of the cosmos.

Unfortunately for the Mets' catcher, people have long speculated about both matters involving him.

Scientists have long speculated that conditions on Titan resemble those of early Earth, though at a much lower temperature.

Problems between the group and record label had been long speculated.

Historians have long speculated as to why he changed his views.

Epileptologists have long speculated as to what governs the transition from the interictal to the ictal state.

More complex molecules have been found before in space, and researchers have long speculated that biologically important molecules could form there.

The automotive press, however, has long speculated that the true output of the engine is higher.

Biographers have long speculated about the relationship.