this is not a spoiler, although i wish it was. this could have had potential

1936
Somewhere in Earth orbit, three escape pods eject from the saucer section of
the USS Enterprise. The Enterprise tumbles hopelessly into the Earth's
atmosphere. The anti-matter chamber from the engineering section breaks away
and tumbles down to the Earth's surface while the rest of the ship
disintegrates in the atmosphere. Several more life pods eject from the great
ship as it disintegrates into the Earth's atmosphere.

1908
Krasnoyarsk Krai (Tunguska) Russia 7:40 AM. A horrific explosion occurs near
the Podkamennaya River. A glow can be seen for miles turning night into day
in the surrounding cities. In the forest the force of the explosion ripples
through space opening a gap into time itself completely absorbing the matter
that the Enterprise has left behind. Then disappears leaving only flattened
trees as it's only evidence.

1870
A young man emerges from a life pod in a forest near region of Hungary. The
pod remains intact as he emerges from the pod. He examines the computers and
makes several calculations with his tricorder...