New Horizons was successfully launched today from Kennedy Space Center in Florida, USA after previous delays due to high winds and power outages. A slight delay today because of high clouds preceded a picture perfect launch.

At the moment New Horizons is rocketing away from the Earth and will pass the orbit of the moon in just 9 hours, the fastest yet for a space craft. The speed is necessary to get the spacecraft to Pluto in a reasonable amount of time, just under 10 years. In three months, New Horizons will pass the orbit of Mars, and then in a year it will fly by Jupiter and pick up the extra speed it needs to explore the Kuiper Belt region of our solar system. New Horizons will fly by Pluto and its moons in an event that will last just 24 hours in July 2015, snapping images and gathering other data that could revolutionize our understanding of the solar system and planet formation. After Pluto, New Horizons will be targeted toward other Kuiper Belt objects for exploration.

More Information

• New Horizons – NASA’s Pluto-Kuiper Belt Mission
• Images from Kennedy Space Center

Update: Launch postponed to Wednesday, January 18, 2006 due to high winds.

New Horizons and the Atlas rocket on which it sits were rolled out to their launch pad at Kennedy Space Center in Florida, USA yesterday. Only hours remain before the launch window opens up and NASA attempts to launch the piano-sized spacecraft on its mission to explore Pluto and the Kuiper Belt. NASA TV will provide live coverage and a live cam of the launch pad is available on the New Horizons launch site.

More Information

• New Horizons – NASA’s Pluto-Kuiper Belt Mission
• Images from Kennedy Space Center

The first spacecraft mission to the last of the original nine planets in our solar system is schedule for launch on Tuesday, January 17, 2006. New Horizons will begin its journey as the fastest spacecraft ever launched from the Earth. The speed is necessary to reach Pluto and its three known moons in just a little over nine years.

Pluto lies in a region of our solar system known as the Kuiper Belt, a disk-shaped band around the Sun thought to consist of tens of thousands or more small icy bodies. The existence of the Kuiper Belt has been confirmed by the discovery since 1992 of several objects nearly the size of Pluto. Last year, astronomers announced the discovery of a a Kuiper Belt object code named “Xena” that is larger than Pluto. Soon after came announcements about two new moons found orbiting Pluto and a moon found orbiting the tenth planet.

New Horizons will fly by Pluto, its largest moon Charon, and its two smaller moons in July 2015. All instruments on board the spacecraft will have to work quickly to explore the Plutonian system because close approach will last only 24 hours. Once it has passed Pluto, New Horizons will target other Kuiper Belt objects between 2016 and 2020.

Since the discovery of Xena, scientists have been debating just what a planet is, a debate that will have to be resolved before the body can be officially named. If scientists agree that Pluto is just another member of the Kuiper Belt, it may lose its status as a planet and the solar system will officially have eight planets. If instead the diameter of Pluto becomes the new lower limit for defining a planet, then Xena will likely also gain official status as a planet. So far there have been no indications as to when a decision will be reached.

New Horizons will launch from Kennedy Space Center. The window of opportunity for launch begins on Tuesday and lasts through February 14, 2006.

More Information

• New Horizons – NASA’s Pluto-Kuiper Belt Mission
• “The discovery of 2003 UB313, the 10th planet“
• March 07, 1996 NASA/Hubble Press Release - “Hubble Reveals Surface of Pluto for First Time“