Humanity has already flung machines into interstellar space, but sending people is a different problem entirely. The physics of propulsion, the fragility of the human body, and the sheer size of the ...

If we achieve advanced nuclear, antimatter propulsion or other advance propulsion it would be possible to achieve near constant acceleration. This would enable travel times to Mars in the 3-8 day ...

3I/ATLAS captured the world's attention last month as the comet raced past the Earth, but some believed that it could have ...