How hard is it to hop to the nearest star system or soar across the galaxy? A typical "Star Trek" or "Star Wars" movie makes it look easy.
Interstellar travel is the ability to travel between stars in the exploration of space. In science fiction, interstellar travel is often depicted as faster-than-light, such as warp drive on "Star Trek" or light speed in "Star Wars," but research is underway to build robotic probes for Alpha Centauri (as in the Breakthrough Starshot project), and to develop hibernation systems, generation ships and other long-duration space technology needed to one day send astronauts to other stars. Learn more about interstellar travel and technology.
The solar system recently received its first interstellar visitor, 'Oumuamua, and researchers have now suggested a plan for a mission to meet the next guest from another star.
Some distant objects in our solar system bear the gravitational imprint of a small star's close flyby 70,000 years ago, a new study suggests.
Our solar system's first known interstellar visitor is likely even more alien than previously imagined, a new study suggests.
While it looks like an asteroid, the first interstellar object spotted passing through the solar system, called 'Oumuamua, may be more like a comet in disguise.
The interstellar asteroid that zoomed past Earth last month is like nothing we’ve seen before, new observations reveal.
We now know what to call the mysterious object from interstellar space that zoomed past Earth last month.
If humanity doesn't become a truly spacefaring species in the next five centuries or so, we may well go extinct, Stephen Hawking said, according to media reports.
Experts in interstellar travel have picked future candidates to make the first extrasolar trek. Their names: the nematode Caenorhabditis elegans and tardigrades, otherwise known as water bears.
A visitor from interstellar space has apparently been spotted in our solar system for the first time ever.
Scientists, engineers and exploration advocates will gather in central California this week to help plan out humanity's journey to the stars.
Fusion-powered rockets that are only the size of a few refrigerators could one day help propel spacecraft at high speeds to nearby planets or even other stars, a NASA-funded spaceflight company says.
Some of the first spacecraft that humanity sends to other solar systems may carry microscopic ambassadors from Earth.
The first fleet of robotic spacecraft that humanity launches to explore nearby exoplanets may include a few kamikazes.