Pluto flyby

2015 will perhaps be remembered as a year of cultural tipping points.

Just three months after the historic flyby, the New Horizons team has a paper coming out in the journal "Science."

Program scientist Curt Niebur explains new data from NASA's New Horizons mission.

NASA has released an image taken by the New Horizons spacecraft just 15 minutes after its Pluto flyby.

"To make New Horizons an orbiter mission would have increased the complexity and cost greatly."

Continuing a long tradition of space program conspiracy theories, 'Pluto Truthers' claim NASA is faking it.

How could Pluto hold onto its extended layer of gases over the last 4.5 billion years? It should have long ago escaped.

One day after the flyby, the New Horizons team makes an important discovery about geology based on a detailed surface image.

The spacecraft's team waited anxiously for it to "let us know it's OK."

Videos, tweets and a Google doodle honor the historic moment in space exploration.

NASA published its most detailed image yet, taken one day before the flyby. Even better images are still to come.

NASA is set to make history shortly after 7:30 a.m. on Tuesday when the New Horizons spacecraft zooms past Pluto.

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.

NASA's New Horizons probe is scheduled to make its historic flyby past the dwarf planet this summer.