Scientists directly imaged two embryonic exoplanets 370 light-years away.
But some answers might finally be on the way.
It could be something even cooler.
MU69 is far from your run-of-the-mill solar system object.
We're under a time crunch.
The upper atmosphere of Venus is surprisingly similar Earth.
From the Popular Science archives.
Shower your friends with meteor facts.
It's time to return to our hellish neighbor.
In the December 1980 issue of Popular Science, a 38-year-old theoretical physicist answers the ultimate question about the universe.
But we'll have to get there first.
It's an event that should bring us all together, so don't mess it up.
Another day, another hypothetical object on the outskirts of the solar system.
Water, water, everywhere (but especially around the poles)
Seeking a distant pale blue dot
Rise Of The Rocket Girls gives the untold story of the women behind the space race
The evidence is right in front of you.
The greatest hits of Earth's unmanned spacecraft
This year's missions to the outer solar system are set to shake up the planetary family tree
More than 200,000 aspiring space explorers volunteered for a one-way trip to Mars. Are they insane?
Jupiter's moon is the best candidate for finding extraterrestrial life; here's how we're going to get there
The Dawn spacecraft arrives at Ceres this March, and it could be the most surprising space mission in decades
And you thought your home was dusty