Yes there is. In astronomy, for example, all you know is that the given mathematical model worked for the observations done in the past. You then believe that it works for the future observations also. Forget the specific astronomical model; how do you know that the sun will come up tomorrow? You observe it come up in the past, and you came up with one or another model with circles and ellipses that fit the past observations. Whether or not that will work in the future is a "thing unseen" requiring faith.
The Scripture offers another model, whereby the sun will not come up one day:
On the contrary, It is stated (Apocalypse 10:6) that the angel who appeared, "swore by him that liveth for ever and ever . . . that time shall be no longer," namely after the seventh angel shall have sounded the trumpet, at the sound of which "the dead shall rise again" (1 Corinthians 15:52). Now if time be not, there is no movement of the heaven. Therefore the movement of the heaven will cease.Both models work for the observed past, and both require faith to make statements about the future.
Astronomers don't "believe" the sun will come up tomorrow. They have certain degree of expectation based on probability, which is based on observed phenomena, knowledge of the solar system, knowledge of the age of the Sun, the longevity of similar yellow stars, etc. In other words it's based on the law of averages, a purely mathematical construct.
Whether or not that will work in the future is a "thing unseen" requiring faith
Not really, annalex. Astrophysicists can tell you pretty much that the Sun will undergo some significant changes at one point in its life, turning into a red giant and engulfing the inner planets, including the earth. If the sun behaves like hexatrillions of other stars, the probability is high that the earth will disappear before the sun does. But at one point, the sun should use up its nuclear fuel and turn into a carbon star, that will burn itself into iron, and collapse onto itself and explode, becoming a very dense white dwarf that will spin at incredible speed until it burns out and becomes space debris and "dark matter."
Can there be exceptions? Sure. The probability exists even for that. In other words, scientists don't "hope" to be right on things unseen in the future; they place a certain degree of probability on an event based on the laws of nature and observed phenomena.