Right now, the Voyager I spacecraft is hurtling through space at 35,000 miles per hour. That sounds fast, until you consider that it only recently left our solar system, 37 years after its 1977 launch. As impressive as our feats of spaceflight have been, there's an elephant in the room. Physics professor Philip Lubin laid it out clearly when he wrote, "While we all dream of human spaceflight to the stars in a way romanticized in books and movies, it is not within our power to do so." To get there, we're going to need to go much, much faster, and our current propulsion systems just aren't hacking it.
How Photonic Propulsion Works
Hear about the system that could get a craft to Mars in as little as three days.
What Is A Solar Sail?
Think of it as photonic propulsion's weaker older brother.
5 Real Possibilities For Interstellar Travel
If it's ever going to happen, it might happen in one of these ways.
Wake up with the smartest email in your inbox.
Our Best Articles Daily