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It’s easy to take time’s arrow for granted — but the gears of physics actually work just as smoothly in reverse. Maybe that time machine is possible after all?

An experiment earlier this year shows just how much wiggle room we can expect when it comes to distinguishing the past from the future, at least on a quantum scale. It might not allow us to relive the 1960s, but it could help us better understand why not.

Researchers from Russia and the US teamed up to find a way to break, or at least bend, one of physics’ most fundamental laws on energy.

Now Playing: Star Trek: The History of Jean-Luc Picard.

There’s a lot happening in the Star Trek TV universe, and much of it will feature at the franchise’s San Diego Comic-Con event later today, Saturday, July 20. Details of what fans can expect from the various Star Trek panels have now been announced. [Update: The panels are ongoing, but we’ve already learned a lot. Check out the links below for all of our coverage.].