You can choose to enable and disable the visibility of your objects from the Explorer. To do this, simply click on the eye icon in the Explorer. Re-click on the eye icon to re-enable the visibility of your object.
Alternatively, you could Hide and Unhide selected objects using the keybaord shortcut, (H); Or you could do it from the Properties panel (located to the right of the interface) by unchecking the Visibility check box.