# Can one see the infinite future of the universe when falling to Kerr and Reissner-Nordstro"m black holes?

*A.A. Grib*^{1} and A.M. Rasulova^{2}

(1) Friedmann Lab. for Theoretical Physics, Griboedov can. 30/32, St. Peterburg 191023, Russia

(2) Friedmann Lab. for Theoretical Physics, Griboedov can. 30/32, St. Peterburg 191023, Russia

### Abstract

We analyze the falling time of massless and massive particles to a black hole, using timelike and null geodesics for spaces described by the Kerr and Reissner-Nordström metrics. It is shown that an observer falling to a black hole horizon will see only a finite future of the external universe. The formula obtained can be used in assessing the difference in arrival time of photons and massive particles from Kerr and Reissner-Nordström black holes to an observer on Earth.

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