26 September 2005, 05:22 PM ET
A spacecraft bound for Pluto has arrived at NASA’s Florida spaceport, bringing it one step closer in its journey toward the distant world.
01 September 2005, 07:15 AM ET
Engineers have completed a set of key shake and bake tests in readying NASA’s New Horizons spacecraft – critical steps to show that the craft is on track for launch in January of next year.
02 August 2005, 12:05 AM ET
With the discovery of a new world larger than Pluto, astronomers feel the need to define the term "planet." But can they agree on anything?
29 July 2005, 07:59 PM ET
In a landmark discovery, a new world is found.
26 July 2005, 06:18 AM ET
Rare occultation may reveal new information on Pluto’s moon Charon.
07 June 2005, 07:00 AM ET
Most television science fiction shows fling humans out to the vast reaches of the galaxy, but "Voyage to the Planets and Beyond" is content with exploring our own planetary backyard.
29 March 2005, 01:10 PM ET
CAPE CANAVERAL -- NASA is offering people a chance to comment tonight and Wednesday on a planned mission to Pluto that will carry nuclear fuel.
11 March 2005, 06:15 AM ET
The challenge highlights the difficulty professional astronomers faced many decades ago when trying to find the elusive world in the first place.
15 February 2005, 07:00 AM ET
Pluto was discovered 75 years ago this week, and astronomers still don't know what to make of the frigid rocky world.
07 February 2005, 08:22 PM ET
In two findings, researchers find setups of stars and planets that confound current theory and definition.
27 January 2005, 02:03 PM ET
Pluto might have been hit long ago by a virtual twin in a collision that created the ninth planet's moon Charon, according to a new computer simulation.
22 November 2004, 06:24 AM ET
A fabled tenth planet out beyond Neptune, often referred to as Planet X, hasn't been found despite years of searching. But astronomers involved in the hunt are beginning to speculate that something like Planet X will be discovered, along with Y and Z.
04 October 2004, 05:23 AM ET
WASHINGTON -- NASA is still targeting a January 2006 launch of the New Horizons Pluto probe after the U.S. Department of Energy (DOE) confirmed it can deliver most of the nuclear fuel the spacecraft will need for its 10-year mission. A post-mission encoun
09 October 2002, 01:25 PM ET
Astronomers today said Pluto is undergoing global warming in its thin atmosphere even as it moves farther from the Sun on its long, odd-shaped orbit.
02 February 2001, 03:30 PM ET
Astronomer Niel de Grasse Tyson, director of the Hayden Planetarium at the American Natural History Museum in New York, discusses the center’s advocacy for dropping Pluto’s planetary status.
21 July 1999, 05:42 PM ET
Astronomers using the Japanese Subaru Telescope on Hawaii have detected frozen ethane on the surface of Pluto.