We Should Be Able To Detect Spaceships Moving Near The Speed Of Light

A pair of engineers say it's possible to detect the signatures of spacecraft traveling at relativistic speeds, and we can do so using current technologies. The trouble is, their new analysis also suggests that moving through space at ludicrous speed is more hazardous than previously thought. » 3/25/15 8:40am Wednesday 8:40am

The 7 Least Plausible Solutions To The Fermi Paradox

One of the greatest conundrums to face humanity is the question of extraterrestrial life. Many explanations have been posited over the years to explain why we have yet to make first contact, some better than others. Here are seven of the weakest solutions to the vexing problem known as the Fermi Paradox. » 3/02/15 11:00am 3/02/15 11:00am

Which Religions Are Prepared to Accept Life in Space?

Assuming we don't blow ourselves up before then, colonizing other planets may be the last hope for the survival of humanity. Most of the preparation for this cosmic expansion has centered around solving the more immediate, physical problems of transporting our bodies into deep space, but what about our culture?… » 1/27/15 11:00am 1/27/15 11:00am

After Earth Falls, Will Interstellar Space Travel Be Our Salvation?

It may be just a matter of time before the Earth becomes uninhabitable. As astrophysicists and avid science fiction fans, we naturally find the prospect of interstellar colonization intriguing and exciting. But is it practical, or even possible? Or is there a better solution? » 1/23/15 11:20am 1/23/15 11:20am

A Psychological Transformation That Only Astronauts Experience

Yes, Time Travel Is Possible; Here's How

Time travel's been one of man's wildest fantasies for centuries. It's long been a popular trend in movies and fiction, inspiring everything from Charles Dickens' A Christmas Carol to H.G. Wells' The Time Machine to the Charlton Heston shrine that is The Planet of the Apes. And with the opening of Interstellar » 11/05/14 1:25pm 11/05/14 1:25pm

NASA Is Considering A Deep Sleep Option for Mars Mission Crew

A NASA-backed study is exploring an innovative way to dramatically cut the cost of a human expedition to Mars — put the crew in stasis. » 10/07/14 2:30pm 10/07/14 2:30pm

An Incredibly Detailed Illustration of the Spaceship That Has Everything

Could We Travel To Another Galaxy Using Hypervelocity Stars?

The thought of traveling to a distant star is daunting enough, let alone the prospect of facing millions of years of flight time to reach the nearest galaxy. Remarkably, the discovery of galaxy-escaping hypervelocity stars may provide a solution. » 6/27/14 2:40pm 6/27/14 2:40pm

Here's NASA's New Design for a Warp Drive Ship

A Lunar Discovery Reveals The Secret To Building Deflector Shields

Radiation in space is one of the major obstacles to human exploration of the solar system. Astronauts on a round-trip to Mars could be exposed to radiation doses 66,000 times higher than on Earth. But recent research into magnetic fields on the Moon could help us design effective radiation shields. » 6/09/14 10:20am 6/09/14 10:20am

The Astronomer Who Wanted to Rearrange the Solar System, Using Nukes

CalTech astronomer Fritz Zwicky was the first to conceive of dark matter, supernovas and neutron stars. He also had a theory about colonizing the solar system using nuclear bombs. We could terraform other planets, he argued, by pulverizing them and then moving them closer or further from the sun. » 5/14/14 11:00am 5/14/14 11:00am

Impact of Cosmic Rays on Cognitive Health

As part of investigations into the impact of long-duration space travel on squishy biological creatures, researchers at Johns Hopkins University blasted rats with high-speed particles. Shockingly, the irradiated rats failed to develop awesome superpowers, instead developing cognitive issues. Whoops. » 5/01/14 5:00am 5/01/14 5:00am

NASA's New Mars-Landing Technology Is Almost Ready For Its Test Flight

Reporters got their first look at the rocket-powered, flying saucer-shaped vehicle that will be sent into near space this June to test the Low-Density Supersonic Decelerator (LDSD) that will land future spacecraft on Mars. » 4/11/14 6:40am 4/11/14 6:40am

Scientists Build Incredible “Mars In A Bottle” Simulation Chamber

Environmental conditions on Mars are uniquely suited to destroying the billions of dollars of scientific equipment we send to study the Red Planet. To better protect our investments, three researchers have built a simulation chamber to assess the resilience of high-tech instruments before they are launched. » 4/09/14 11:20am 4/09/14 11:20am

Can Six Astronauts Live Together for 17 Months And Not Go Crazy?

The "Mars500" project was the most ambitious attempt yet to simulate the conditions of an expedition to the Red Planet. A newly published study assesses the psychological well-being of the crew during their "mission"—and reveals what it was like to live in cramped quarters with 6 people for 520 days. » 4/02/14 7:40am 4/02/14 7:40am

How the Solar Sail Could Fuel Interplanetary Travel

Stephen Baxter's new novel Proxima includes a sentient solar sail, but this unique type of spacecraft has a long history in science fiction — and an even longer one in science. Though the idea is 400 years old, it might still become the kind of vessel that we eventually ride to the stars. » 3/13/14 9:00am 3/13/14 9:00am

How to power a starship with an artificial black hole

According to theory, it may be possible to create an advanced propulsion system that would harness the available energy from an evaporating black hole, a so-called Schwarzschild Kugelblitz drive. Here's how it would work. » 1/16/14 4:00pm 1/16/14 4:00pm

Where in Space Should We Go Next?

With the Mars-based Rover having taken one giant roll forward for robots everywhere, we're closer than ever to landing a person there or even beyond. (Or being barred by our robot overlords from their amazing new Mars robo-colony. One or the other.) Today, we want to know where in space we should go next. » 10/24/13 7:00am 10/24/13 7:00am

Jellyfish developed in space have trouble getting around on Earth

What are the consequences of growing up in space? Well, if you're a jellyfish, once you find yourself subject to Earth's gravity, you may have more trouble swimming than your counterparts who were born on Earth. » 10/19/13 9:30am 10/19/13 9:30am