16 July 2015, 02:39 PM ET
A newly released Charon photo, which was taken by NASA's New Horizons probe during its epic Pluto flyby Tuesday (July 14), reveals a mountain rising out of a big hole on the 750-mile-wide (1,200 kilometers) moon's surface.
16 July 2015, 08:38 AM ET
New Late Night host Stephen Colbert tested just how far Neil deGrasse Tyson would go to deny Pluto's status as a planet in an online interview.
16 July 2015, 07:00 AM ET
New photos by NASA's New Horizons spacecraft show that both the dwarf planet and its biggest moon, Charon, have been geologically active in the recent past. Scientists aren't sure what processes have powered this surprising activity.
15 July 2015, 09:44 PM ET
President Barack Obama fired off a congratulatory tweet Tuesday (July 14) celebrating the first-ever flyby of Pluto, which NASA's New Horizons spacecraft performed earlier that day.
15 July 2015, 08:03 PM ET
The newest images of Pluto and its moons, taken by NASA's New Horizons probe, revealed mountains that compete with the Rockies, chasms that dwarf the Grand Canyon and swarms of other mysteries to investigate.
15 July 2015, 05:51 PM ET
Starting with Clyde Tombaugh in 1930 and ending with New Horizons most recently released photo, its been an incredible journey to the far reaching icy dwarf. A complete list of sources for each image can be found on NASA.gov.
15 July 2015, 05:37 PM ET
The first close-up photo of Pluto revealed a mountain range rising 11,000 feet (3,500 meters) into Pluto's sky, along with a surface just 100 million years old at the most. A view of the dwarf planet's big moon Charon didn't disappoint, either.
15 July 2015, 04:07 PM ET
Some of the best images of Pluto and Charon were captured between July 11-July 14th, 2015 and have been revealed to the world. The closest approach images of July 14 show stunningly diverse worlds.
15 July 2015, 03:35 PM ET
NASA unveiled the first image from New Horizons' closest approach to the icy dwarf and Charon at a press conference on July 15th, 2015.
15 July 2015, 10:40 AM ET
"Chasing Pluto," a production of PBS' NOVA science series, premieres tonight at 9 p.m. EDT/8 p.m. CDT. The documentary provides an in-depth, behind-the-scenes look at the New Horizons mission and its flyby of the dwarf planet.
15 July 2015, 10:11 AM ET
The online Slooh community observatory will webcast live views of Pluto today, July 15, at 5:30 p.m. ET, to celebrate the successful Pluto flyby by NASA's New Horizons. Here's how to watch it.
15 July 2015, 07:15 AM ET
NASA's New Horizons probe performed the first-ever close flyby of Pluto early yesterday morning (July 14). Here's what scientists, government officials and other interested parties had to say about the historic event.
15 July 2015, 07:10 AM ET
This morning, NASA's New Horizons probe will beam home the first haul of photos collected during Tuesday morning's Pluto flyby. NASA plans to unveil some of the best images during a news conference today at 3 p.m. EDT; watch it live on Space.com.
14 July 2015, 09:05 PM ET
NASA's New Horizons spacecraft has sent a status update home to its handlers here on Earth, indicating that the probe survived its historic encounter with Pluto this morning (July 14) — and that reams of amazing data should be on the way soon.
14 July 2015, 08:16 PM ET
He calls himself an "accessory" to the demotion of Pluto in an interview with NBC News' Lester Holt. Tyson uses Pluto's mass and its orbit crossing with that of Neptune as two major sticking point for classifying it as a dwarf planet.
14 July 2015, 07:26 PM ET
Guitar legend Joe Satriani shares a new track, and his thoughts on Pluto, with Space.com.
14 July 2015, 05:26 PM ET
NASA's New Horizons spacecraft performed the first-ever close flyby of Pluto this morning (July 14). Space.com managing editor Tariq Malik tells us what it was like to be at mission control for the historic moment.
14 July 2015, 05:00 PM ET
The surfaces of Pluto and Charon don't actually look like the inside of a kaleidoscope, but colorful new images reveal materials on the surface and give hints at the history of these two far-out objects.
14 July 2015, 04:06 PM ET
As NASA's New Horizons team members wait in anticipation for the spacecraft to send home its highly anticipated close-approach images of Pluto, they'll be making sure not to jinx the mission.
14 July 2015, 04:01 PM ET
Pluto, Charon, and other large objects in the outer reaches of the solar system could boast icy plumes, and NASA's New Horizons mission could find them.
14 July 2015, 03:46 PM ET
Satriani is well known to lean on space and science themes in creating his instrumental guitar-driven music. Space.com video producer @SteveSpaleta reached out to 'Satch,' combining Joe’s verbal reactions with some of the amazing Pluto imagery.
14 July 2015, 02:47 PM ET
From one icon of science to another: in a video message posted this morning (July 14), physicist Stephen Hawking congratulated the New Horizons team on the spacecraft's flyby of Pluto.
14 July 2015, 01:16 PM ET
Science and distance conspire to create a long silence from NASA's New Horizons spacecraft, which flew by Pluto this morning (July 14).
14 July 2015, 01:11 PM ET
Space.com managing editor Tariq Malik is thrilled for the upcoming Pluto flyby of New Horizons, and will be covering it live on social media for us throughout the encounter. See his posts here as they happen.
14 July 2015, 11:20 AM ET
Breathtaking detail of the surface of Pluto was revealed in an image taken just before the New Horizons spacecraft made its closest approach to the dwarf planet this morning (July 14).
14 July 2015, 10:40 AM ET
See images and illustrations of the dwarf planet Pluto and its three — now FIVE! — moons.
14 July 2015, 10:20 AM ET
Titan, one of the most potentially habitable bodies in the solar system, may have gone through snowball phases that resemble Pluto today.
14 July 2015, 08:05 AM ET
The New Horizons' team and a room full to capacity at the mission's control center outside of Baltimore, Maryland celebrated with the rest of the world at the exact time of the Pluto (7:49 EDT, July 14th, 2015).
14 July 2015, 07:50 AM ET
NASA's New Horizons probe flew by Pluto this morning (July 14), capturing history's first up-close looks at the frigid, far-flung world and completing the initial reconnaissance of the solar system (if all went according to plan).
14 July 2015, 07:42 AM ET
New Horizons was 476,000 miles (766,000 kilometers) from the surface of the icy dwarf at 4pm EDT on July 13th, 2015. Closest approach will occur at 7:49am EDT on July 14th.
14 July 2015, 05:00 AM ET
The New Horizons probe's epic flyby of Pluto today (July 14) comes on a very special date in the history of space exploration: Exactly 50 years ago today, NASA's Mariner 4 spacecraft made the first flyby of Mars.
13 July 2015, 05:39 PM ET
A collaboration between the American Museum of Natural History and Sweden's Linkoping University animates NASA's New Horizons closest encounter with the Pluto-Charon system. The OpenSpace software used can be obtained here: openspace.itn.liu.se.
13 July 2015, 12:07 PM ET
Investigation of imagery and other data from the approaching probe reveal Pluto to be larger than previous estimates. Principal investigator Alan Stern explains the implications on ice composition, rock estimates, and atmospheric composition.
13 July 2015, 06:00 AM ET
The New Horizons probe's flyby of Pluto on Tuesday (July 14) will wrap up the initial reconnaissance of the solar system, an endeavor that began more than 50 years ago.
13 July 2015, 06:00 AM ET
Pluto — the once (and to some people, forever) ninth planet of the solar system — gets a lot of love from the general public. What makes this icy outlier so loveable?
13 July 2015, 06:00 AM ET
On Tuesday morning (July 14) — nine and a half years after launching, and a quarter-century after its mission began to take shape — NASA's New Horizons probe will perform history's first flyby of Pluto.