01 July 2015, 07:01 AM ET
NASA's New Horizons probe will cruise within 7,800 miles (12,500 kilometers) of Pluto's surface on July 14, capturing the first-ever good looks at the frigid, faraway and mysterious world.
30 June 2015, 05:07 PM ET
Pluto and its largest moon, Charon, posed for a solemn portrait taken by NASA's New Horizon's probe, which is only two weeks away from its close encounter with the dwarf planet.
24 June 2015, 06:00 PM ET
In anticipation of the New Horizons probe making a close flyby of Pluto on July 14, this sky chart can help you spot the dwarf planet in the night sky (with the assistance of a high-power telescope).
24 June 2015, 05:12 PM ET
Singer-songwriter Craig Werth has written a song called "Oh Pluto" to highlight and celebrate NASA's New Horizons mission, which will give the world its first up-close looks at the dwarf planet during a highly anticipated flyby on July 14.
23 June 2015, 05:05 PM ET
NASA's New Horizons spacecraft has spotted a strange dark patch at the pole of Pluto's big moon Charon, further whetting researchers' appetites ahead of the probe's epic flyby of the dwarf planet system next month.
23 June 2015, 09:06 AM ET
Images captured between May 29th and June 18th, 2015 resolve patches on the icy dwarf's surface and suggest that one of Charon’s poles might be significantly less bright than the bulk of the moon.
19 June 2015, 09:59 PM ET
In new imagery of the dwarf planet taken from May 29th to June 3rd, 2015, its "near-true color" is revealed. Charon, also in view, is grey. The images are presented in a 'barycentric view,' with both Pluto and Charon in motion, and a 'Pluto-centric'
18 June 2015, 01:11 AM ET
The International Astronomical Union is an organization of professional astronomers and the recognized authority for assigning names to celestial objects.
12 June 2015, 03:11 PM ET
The many "faces" of Pluto are visible in new images by NASA's New Horizons probe, which is only one month away from the first-ever close encounter with the dwarf planet.
11 June 2015, 05:01 PM ET
The NASA probe's LORRI instrument snapped new imagery of the double planet from May 28th until June 3rd, 2015. The ice dwarfs' features are starting to come into focus.
09 June 2015, 06:18 AM ET
A new NASA Web tool called "Pluto Time" lets users experience the light levels that prevail at noon on the dwarf planet. Users enter their location, and Pluto Time tells them the next available opportunity to soak up some Plutonian rays.
07 June 2015, 10:00 AM ET
Scientists announced surprising discoveries about Pluto's moons, a spacecraft beamed home amazing images taken from a comet's surface, and the United Arab Emirates outlined its bold Mars plans. Here's a look at Space.com's top stories of the week.
07 June 2015, 09:31 AM ET
From up-close looks at Saturn's "spongy" moon Hyperion to photos of the first NASA spacewalk, which occurred 50 years ago this week, don't miss these amazing space images.
05 June 2015, 07:50 AM ET
A rundown of some of the most common misconceptions about the dwarf planet, which will be imaged in detail for the first time during the July 14 flyby of NASA's New Horizons spacecraft.
04 June 2015, 03:39 PM ET
Throw out your textbooks — there are 10 planets in our solar system.
04 June 2015, 01:40 PM ET
Dwarf planet Ceres and asteroid Pallas, discovered in 1801 and 1802, are visible in the night sky in June. Ceres was originally classified as a planet, then an asteroid, and finally a dwarf planet after further observation.
04 June 2015, 07:00 AM ET
The path to Pluto this summer for NASA's New Horizons spacecraft should be relatively smooth and safe, a new and improved portrait of the dwarf planet's moons suggests.
04 June 2015, 07:00 AM ET
A campaign called "Dear Pluto" aims to get kids around the country excited ahead of the New Horizons spacecraft's historic flyby of the dwarf planet this summer.
03 June 2015, 01:01 PM ET
Pluto's moons are even stranger and more intriguing than scientists had imagined, observations by NASA's Hubble Space Telescope reveal.
31 May 2015, 07:00 AM ET
NASA announced the science instruments for its mission to Europa, SpaceX was certified for U.S. military launches and a tiny solar-sailing spacecraft suffered a glitch in orbit. Here's a look at Space.com's top stories of the week.
30 May 2015, 11:13 AM ET
From a nebula's crimson heart to a dragon's-eye view, don't miss these amazing space images of the week for May 31, 2015.
28 May 2015, 06:45 PM ET
New Horizons' hunt for new moons, rings and other potential hazards near Pluto has turned up nothing so far.
27 May 2015, 05:02 PM ET
NASA's New Horizons probe, which will make the first-ever flyby of Pluto on July 14, captured the images with its long-range camera from May 8 through May 12, when the spacecraft was a bit less than 50 million miles from the dwarf planet.
27 May 2015, 07:00 AM ET
The free Pluto Safari app, which came out last month, keeps tabs on NASA's New Horizons mission, counting down its July 14 close encounter to the second, and teaches users about the frigid, distant realm the spacecraft is exploring.
22 May 2015, 10:34 AM ET
A manned mission to Pluto may be far out, but it's not impossible.
19 May 2015, 07:00 AM ET
NASA is considering allowing a team of researchers, teachers, artists and engineers to upload an interstellar message to the agency's New Horizons spacecraft, which will perform the first-ever flyby of Pluto on July 14.
15 May 2015, 07:00 AM ET
NASA's New Horizons probe, which is set to perform the first-ever flyby of Pluto on July 14, has begun hunting for possible rings and undiscovered moons, in an effort to identify potential hazards near the dwarf planet.
14 May 2015, 11:00 PM ET
As New Horizons nears its closest approach with Pluto, the mission team is hosting 'Pluto-Palooza' events in multiple locations around the country.
12 May 2015, 08:08 PM ET
New Horizons took a series of images from April 25 through May 1. The shots mark the first time New Horizons has managed to resolve the extremely faint Pluto moons Kerberos and Styx, mission team members said.
03 May 2015, 10:31 AM ET
A Russian cargo vessel suffered a serious malfunction on its way to the space station, NASA's MESSENGER probe slammed into Mercury and the New Horizons spacecraft snapped the best-ever photos of Pluto. Here's a look at Space.com's top stories of the week.
29 April 2015, 05:02 PM ET
New photos of Pluto and its largest moon, Charon, by NASA's New Horizons spacecraft have revealed tantalizing hints at surface features on the dwarf planet, including signs of a polar ice cap. See the photos from new Horizons here.
29 April 2015, 04:17 PM ET
Dwarf planet Pluto and its largest moon Charon are seen to orbit one another in this set of images from NASA’s Pluto New Horizons LORRI camera, taken when the spacecraft was about 90 days out from its closest encounter.
19 April 2015, 09:20 AM ET
SpaceX nearly pulled off an unprecedented rocket landing during a cargo launch to the International Space Station and NASA's New Horizons probe returned its first color image of Pluto. Here's a look at Space.com's top stories of the week.
15 April 2015, 07:16 AM ET
NASA's New Horizons mission to Pluto has returned its first color image of the dwarf planet and its largest moon, Charon. The new photo was taken on April 9, from a distance of about 71 million miles (115 million kilometers).
14 April 2015, 09:55 AM ET
Ground-based and Hubble images of Pluto suggest it might be the reddest object in the Solar System. New Horizons' Principal Investigator Alan Stern explains how this could have happened.
09 April 2015, 04:41 PM ET
Traveling through space at 30,000 miles per hour poses some risks, which is why NASA's Pluto-bound New Horizons probe is wearing a bulletproof vest.