Space

A vista from NASA's Mars Exploration Rover Opportunity

That one-way ticket to Mars you were hoping for may not be such a good idea

The Mars One mission was once a media darling, but a critical MIT report has triggered a backlash against the project that even includes one of its own potential astronauts.

That one-way ticket to Mars you were hoping for may not be such a good idea
eclipse

Seeing a total solar eclipse is 'like standing on another planet and looking at an alien sky'

Seeing a total solar eclipse is 'like standing on another planet and looking at an alien sky'
This artist's concept shows NASA's Dawn spacecraft arriving at the dwarf planet Ceres

NASA’s Dawn spacecraft is already historic, and it’s just getting started

NASA’s Dawn spacecraft is already historic, and it’s just getting started
An artist's rendering of a habitable moon orbiting a gas giant planet.

Life beyond Earth? The best bet may be on moons, not planets

Life beyond Earth? The best bet may be on moons, not planets
The World

A trip to Mars is a lifetime dream — and excellent reality TV

A trip to Mars is a lifetime dream — and excellent reality TV
Earth

The FAA is ready to protect — and regulate — your space business

We are still years away from there being meaningful businesses on the moon — if even that soon — but the US government doesn't want to be caught off guard. So officials at the FAA are preparing regulations for

The FAA is ready to protect — and regulate — your space business
Comet Lovejoy has probably passed through the inner solar system at least once already—we just weren't alive to see it.

Look hard and you can see Comet Lovejoy lighting up the night sky

The last time Comet Lovejoy was visible in the night sky was 8,000 years ago. Now it's back and visible from the Northern Hemisphere in the coming weeks, and binoculars or a telescope can give you a glowing view of the visitor.

Look hard and you can see Comet Lovejoy lighting up the night sky
The World

After a long, cold journey, NASA's New Horizons probe has Pluto in its sights

Talk about a long, strange trip. A NASA spacecraft called New Horizons has traveled 3 billion miles through space over the last nine years and now is approaching Pluto. Aboard: Ashes of the astronomer who discovered the distant orb in 1930.

After a long, cold journey, NASA's New Horizons probe has Pluto in its sights
NASA's Mars rover, Curiosity, is pictured in this February 3, 2013 handout self-portrait.

The Curiosity rover uncovers evidence that Mars once had a massive lake

The Curiosity rover is currently roaming a 96-mile crater on the surface Mars, and the evidence it has collected suggests that the crater was once home to a huge lake. And NASA scientists say this information is unlike any they've seen before.

The Curiosity rover uncovers evidence that Mars once had a massive lake
NASA Administrator Charles Bolden and his wife, Jackie, watch as the Delta IV Heavy rocket with the Orion spacecraft lifts off on December 5, 2014.

One small step from Earth, one giant leap to Mars?

NASA says the first launch of the Orion spacecraft on Friday is “the dawn of the new era of space exploration" that will finally kick off the attempt to put humans on Mars.

One small step from Earth, one giant leap to Mars?

What Exactly IS a Comet?

What Exactly IS a Comet?

Cosmonaut Yuri Gagarin's legacy

Tuesday marked the 50th anniversary of when Soviet cosmonaut Yuri Gagarin became the first human being to orbit the earth. The World's Clark Boyd looks back on Gagarin's legacy, in Russia and beyond.

Cosmonaut Yuri Gagarin's legacy