It's the sequel we weren't prepared for.
It could be something even cooler.
It's time to meet 2014 MU69.
MU69 is far from your run-of-the-mill solar system object.
And it's going to keep on smashing them.
And it could help prove the existence of Planet Nine.
Here are some highlights from its journey
From the Popular Science archives.
The survey also confirmed the existence of two other moons, whose discovery was announced last year
Is there a planet—or even planets—waiting to be discovered out there?
Something's got the Kuiper belt's rocks off, and there's a scramble to find it.
Like, can we even do that?
Another day, another hypothetical object on the outskirts of the solar system.
A gallery of photos, visualizations, and other pictures of outer space.
A sky full of super-Earths
More exciting news about cold, dead rocks
It could give us clues to how water got to Earth
This summer, the mission may get funding to travel to a mysterious rock at the edge of the solar system
Shooting for the stars.
Planet 2MASS J2126-8140 orbits a trillion kilometers out from its sun
How skeptical should we be, and how will we find out if this mystery planet is really out there?
Scientists are hot on the trail of our solar system's 9th planet
How much are we really paying to explore the universe?
Our solar system is pretty familiar by now, but even the Moon was shrouded in mystery just 50 years ago
The ocean-filled moon might hold the life we've long searched for in space. And scientists have one shot to reach it.
A total eclipse of the heart
They're teasing us with this awesome false-color picture
It just keeps getting better
The latest and greatest images from the New Horizons mission
Can you feel the love?
NASA releases a breathtaking close-up right before New Horizons flyby
Popular Science goes way back
Witness history in the making
New Horizons scientist Leslie Young discusses what to expect from the flyby on Tuesday, and the 28-year wait leading up to it
And he thinks the upcoming flyby will prove it
This year's missions to the outer solar system are set to shake up the planetary family tree
From 283,000 miles out, the spacecraft is already making discoveries
The former planet is frosted in the stuff
Just 3.5 million miles to go!
We just can't get enough
Watch it live, right here at 3pm, and prepare to be blown away
So. Many. Things.
There's a chance you signed up back in 2005, alongside Elon Musk and Bill Nye
And it's still not Pluto
Based on NASA's best photos, anyway
New Horizons spacecraft reveals the dwarf planet is slightly larger, has polar ice cap, and more
Charon is the real #SuperBloodMoon in latest New Horizons pics
What will we find when we reach Pluto and Ceres? We don't know, but it's going to be wild.
Short answer: It depends who you ask
It's the farthest object we've ever spotted in our neighborhood.
Even though I helped demote it
After nine years and three billion miles, here's what we're learning from it all
Short answer: Because we changed the definition of the word “planet” to better fit its meaning.
Pluto is just the beginning
New images zero in on the former planet's diverse surface
The dwarf planet may have a hydrological cycle, but it's not like ours
It has to do with a surprisingly hazy atmosphere.
Plus, is that a polar ice cap we see?
Stranger worlds to come
New false color images reveal surprising geologic details
Erupting slush instead of lava
What's on the horizon for the New Horizons spacecraft
The Dawn spacecraft arrives at Ceres this March, and it could be the most surprising space mission in decades
Red, white, and black
The heavy heart may have tipped the world over
Scientists aren't just jerking you around—this is about something more than your childhood nostalgia
Pulled by dual gravity, the egg-shaped satellites tumble like eerie dice
The New Horizons flyby is over, but now the real fun begins
Deep under the icy crust
The revolutionary explorer gets a life extension
(If you are like our editors and obsessed with all things space)
Could icy slush be driving the dwarf planet's geological activity?
Like icebergs in the Arctic Ocean
We're under a time crunch.
A tour of places in our solar system where life could persevere
Fasten your seatbelts
Space sailors' delight?
A good week for space photography
Gas might keep the dwarf planet's subsurface ocean from freezing.
As you battle the blizzard, just be happy you don't live on Pluto
Two for the price of one.
Here's what New Horizons saw as it zoomed past the former planet
Latest New Horizons images show an alien landscape, and highest-resolution color map yet
Bringing snark to Mars
It's been 50 years since we got the first images of Mars. Now we're about to get the first images of Pluto.
The Dawn spacecraft has just moved in for a closer look at the dwarf planet
This is anything but hot
There's still more to explore after Pluto.
Even in space, bureaucracy exists.
The first color movies from New Horizons show Pluto and Charon in a weird waltz
Where can I find a planet like that?
Visiting the most distant object ever.
New Horizons will soon find out what's up with MU69.
Europa, the outer solar system, and a lot of questions.
Imagine the space-scuba diving potential
The Event Horizon Telescope peered into the Messier 87 galaxy.
Bubble, bubble, toil and trouble
Before Breakthrough Starshot goes interstellar, let's test the laser sails
Introducing the Next-Generation Transit Survey, the sharpest exoplanet-seeking scope on Earth