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.
08 April 2015, 01:45 PM ET
Flying twice the speed of a Space Shuttle, a collision with cosmic debris could be catastrophic. Flying twice the speed of a Space Shuttle, a collision with cosmic debris could be catastrophic.
07 April 2015, 07:00 AM ET
The deadline for the "Our Pluto" naming campaign — a collaboration involving NASA, the International Astronomical Union (IAU) and the SETI (Search for Extraterrestrial Intelligence) Institute — has been extended to April 24.
06 April 2015, 02:22 PM ET
Thanks to instruments on board NASA's New Horizon's spacecraft, which will fly by Pluto this summer, scientists are able to get an unprecedented look at the space weather near the dwarf planet.
31 March 2015, 12:45 PM ET
Much is unknown about Pluto, including what its surface features are like and what kind of weather patterns it has, if any.
30 March 2015, 07:00 AM ET
Scientists are considering further targets for NASA's New Horizons spacecraft to visit following its Pluto encounter this summer, should funding be provided.
24 March 2015, 02:32 PM ET
NASA's New Horizons' principal investigator Dr. Alan Stern talks to Space.com about the importance of the mission to the "wild west" of our solar system, a place where no other probe has been.
24 March 2015, 07:38 AM ET
Researchers working on NASA's New Horizons mission, which will zoom through the Pluto system on July 14, are asking the public to propose and vote on names for geological features the probe will identify on Pluto and its largest moon, Charon.
15 March 2015, 11:29 AM ET
NASA launched a new space-weather mission and scientists found evidence of a hydrothermal system on Saturn's ocean-bearing moon Enceladus. Here's a look at Space.com's top stories of the week.
12 March 2015, 07:33 AM ET
New Horizons, which will zoom through the Pluto system on July 14, fired its engines for 93 seconds on Tuesday (March 10), when it was about 3 billion miles from Earth — the most distant engine burn ever, mission officials said.
10 March 2015, 03:42 PM ET
Even 100,000 million miles away, NASA’s New Horizons probe has begun delivering unprecedented views. The mission's principal investigator Dr. Alan Stern tells Space.com just how much better the imagery will be.
08 March 2015, 12:48 PM ET
A powerful camera spotted a comet and scientists captured images of a supernova four different times. Here are Space.com's pics for the top space stories of the week.
06 March 2015, 10:20 PM ET
These two events will make 2015 an exciting year for solar system exploration and discovery. But there is much more to this story than mere science.
27 February 2015, 07:00 AM ET
Inside New Horizons is a small piece of SpaceShipOne, the first privately owned and operated spacecraft to reach space twice within a period of 14 days. The feat, which SpaceShipOne accomplished in 2004, won the $10 million Ansari X Prize.
25 February 2015, 11:38 AM ET
2015 an exciting year for solar system exploration and discovery.
21 February 2015, 04:46 PM ET
Europe's last cargo spacecraft came down to Earth in a fiery blaze and scientists reported seeing mysterious plumes emanating from Mars. Here are Space.com's picks for the best space stories of the week.
21 February 2015, 12:42 PM ET
From mysterious plumes on Mars to a space station made of matchsticks, don't miss these amazing space images of the week for Feb. 22, 2015.
19 February 2015, 07:00 AM ET
NASA's New Horizons spacecraft captured images of Nix and Hydra, two of Pluto's five known moons, from Jan. 27 through Feb. 8, at distances ranging from 125 million miles to 115 million miles (201 million to 186 million kilometers).
12 February 2015, 04:05 PM ET
The new Pluto-Charon video was shot by NASA's New Horizons probe from Jan. 25 to Jan. 31, as the spacecraft gears up for its epic Pluto encounter this July.
12 February 2015, 02:04 PM ET
NASA's New Horizon probe watched Charon and Pluto orbit a common center of mass that lies outside either body. Each full revolution takes 6.4 Earth days. The first image was snapped 126 million miles out; the last was ~5 million miles closer.
04 February 2015, 05:54 PM ET
NASA's New Horizons probe has captured new photos — which show Pluto and its largest moon, Charon — with its telescopic camera on Jan. 25 and Jan. 27, when the probe was about 126 million miles (203 million kilometers) from the Pluto system.
27 January 2015, 09:51 PM ET
The New Horizons spacecraft is expected to reach the dwarf planet Pluto in 2015
26 January 2015, 07:00 AM ET
Alan Stern, principal investigator of NASA's New Horizons mission to Pluto, talks to Space.com about the probe's July 14 flyby of the dwarf planet.
16 January 2015, 02:20 PM ET
At least two planets larger than Earth likely lurk in the dark depths of space far beyond Pluto, just waiting to be discovered, a new analysis of the orbits of "extreme trans-Neptunian objects" (ETNOs) suggests.
15 January 2015, 07:41 PM ET
The NASA probe launched in January 2005 and will encounter Pluto in the summer of 2015.
15 January 2015, 07:00 AM ET
NASA's New Horizons probe today (Jan. 15) began its six-month approach to Pluto, which will culminate with the first-ever close flyby of the dwarf planet on July 14.