The Eight Most Notable News Moments of 2015
2015 will perhaps be remembered as a year of cultural tipping points.
First Scientific Paper Published on Pluto Flyby Is Just the Beginning
Just three months after the historic flyby, the New Horizons team has a paper coming out in the journal "Science."
Blue Skies and Water Ice: New Discoveries on Pluto
Program scientist Curt Niebur explains new data from NASA's New Horizons mission.
New Pluto Photos Reveal a Closer Look at the Dwarf Planet's Landscape
NASA has released an image taken by the New Horizons spacecraft just 15 minutes after its Pluto flyby.
Quora Question: Why Doesn't the New Horizons Mission Put the Spacecraft Into Orbit Around Pluto?
"To make New Horizons an orbiter mission would have increased the complexity and cost greatly."
For Pluto 'Truthers,' the New Horizons Mission Is Only the Latest Lie
Continuing a long tradition of space program conspiracy theories, 'Pluto Truthers' claim NASA is faking it.
Why I Joined the Team to Reveal Pluto's Mysteries
How could Pluto hold onto its extended layer of gases over the last 4.5 billion years? It should have long ago escaped.
New Image of Pluto Reveals Mountains but No Impact Craters Yet
One day after the flyby, the New Horizons team makes an important discovery about geology based on a detailed surface image.
New Horizons 'Phones Home': Pluto Flyby Goes Smoothly
The spacecraft's team waited anxiously for it to "let us know it's OK."
Stephen Hawking, Google, Obama and Others Congratulate NASA on Pluto Flyby
Videos, tweets and a Google doodle honor the historic moment in space exploration.
Pluto's Best Portrait Yet Reveals Complex World, Surface Features
NASA published its most detailed image yet, taken one day before the flyby. Even better images are still to come.
Watch: New Horizon Spacecraft's Historic Pluto Flyby Countdown
NASA is set to make history shortly after 7:30 a.m. on Tuesday when the New Horizons spacecraft zooms past Pluto.
Before the Pluto Flyby: What Has New Horizons Seen So Far?
From launch to the scheduled flyby on July 14, New Horizons has sent back images of Jupiter and its moon Io, Neptune, and now Pluto and its moon Charon.
Two Numbers: Pluto Gets Its First Close-Up
NASA's New Horizons probe is scheduled to make its historic flyby past the dwarf planet this summer.