Two Time Journeys

Remaining stationary on the Earth's surface while experiencing time dilation, not instant transition, a man travels into the far future, sees all that there is to be seen and returns home. There are no further temporal journeys.

That paragraph summarizes both The Time Machine by HG Wells and "Flight to Forever" by Poul Anderson. This most Wellsian of Anderson's works contains some passages that are worthy of Wells.

The temporal vehicles in these two short narratives are the bicycle-like Time Machine and the large cylindrical time projector, respectively. Neither is a space-time vehicle although that is what the Time Traveler had originally envisaged. By contrast, the Time Lords and the Time Patrol have vehicles that move in space as well as in time.

The endings of these two works, like the comparable endings of Wells' The First Men In The Moon and "In the Abyss," explain why there are no further journeys. Fortunately, Anderson also wrote series about both space travel and time travel.