Can we journey through time? Sci-fi author Dete Meserve presents a compelling case for our future in the past.

wormhole travel causes not only a shortcut through space, but an usual distortion of time. Time might speed up, slow down, or even loop, putting you at a point before you even started your journey ...

Long-term space travel to Mars could be bad for astronauts' hearts, a new zero-gravity study shows. After a month at the International Space Station, a set of 48 bioengineered human heart tissue ...

Missing from the picture almost entirely? NASA and the U.S. government. Space travel is no longer reserved for highly trained government astronauts, but increasingly open to anyone with the funds ...

I’m an astronomer who has written extensively about space travel, including a book about our future off-Earth. I think a lot about the risks and rewards of exploring space. As the commercial ...

Astronauts and commercial space travelers are subject to damaging radiation and microgravity, along with other potential injuries. We need better ways to protect them. This article first appeared ...

They developed and tested the Genomic Evaluation of Space Travel and Research (GENESTAR) manual, a comprehensive protocol for collecting, processing and storing biospecimens from commercial ...

but uses a simple space-time shape that allows paths to loop back in time. This work suggests that time travel could occur under more ordinary physical conditions than previously thought.