Here's a different concept of time traveling into the future. Time goes by slower, relative to Earth's time, the closer you get to the speed of light. This terminology is called time dilation. There are actual charts designed to show specific time dilation at any given speed, whether that's proven to be accurate I have no idea. Anyways, you calculate at what speed you need to go for how long of time, relative to Earth's time, and when you come back to Earth, due to time dilation, you are now in the future. For example, if I travel at .999999 the speed of light, almost 2 years pass in Earth time for every day on my fast moving "time traveler/spaceship". So I take off for a day and come back and I travel 2 years into the future.

I know it's not time travel in the traditional sense, but it's another way of looking at forward moving time travel.

Although there are a variety of sites that have charts for time dilation, this will give you an easy to understand reference for time dilation if you're interested.

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