Pluto TOP STORY
Video: Pluto on the Horizon - Anticipating our First Encounter with the Double Planet 
© SVALS
Pluto on the Horizon.
In the latest Silicon Valley Astronomy Lecture Series, Dr. Mark Showalter of the SETI Institute, discusses NASA's New Horizon mission to Pluto.
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Pluto
New Horizons Returns New Images of Pluto
© NASA/JHUAP
Pluto and Charon
Pluto discoverer Clyde Tombaugh could only dream of a spacecraft flying past the small planet he spotted on the edges of the solar system in 1930.
Pluto
New Horizons Redefines Definition of "Planet" and "Moon"
Based on stories in the New York Times (and elsewhere) it would seem that the NASA New Horizons mission team is redefining what it means to be a "planet" and a "moon". Do NASA and the IAU agree?
Pluto
New Horizons Begins First Stages of Pluto Encounter
NASA's New Horizons spacecraft recently began its long-awaited, historic encounter with Pluto.
Pluto
Trans-Neptunian Objects Suggest More Planets
There could be at least two unknown planets hidden well beyond Pluto, whose gravitational influence determines the orbits and strange distribution of objects observed beyond Neptune.
Pluto
Have We (Almost) Found All Large Outer Solar System Objects?
"... the probability that there is one or more remaining outer solar system object of this brightness left to be discovered in the unsurveyed regions of the galactic plane is approximately 32%."
Pluto
New Horizons Spacecraft Set to Wake Up for Pluto Encounter
NASA's New Horizons spacecraft comes out of hibernation for the last time on Dec. 6. Between now and then, while the Pluto-bound probe enjoys three more weeks of electronic slumber, work on Earth is well under way to prepare the spacecraft for a six-month encounter with the dwarf planet that begins in January.
Pluto
Hubble Finds Potential Kuiper Belt Targets for New Horizons
Peering out to the dim, outer reaches of our solar system, NASA's Hubble Space Telescope has uncovered three Kuiper Belt objects (KBOs) the agency's New Horizons spacecraft could potentially visit after it flies by Pluto in July 2015.
Pluto
Voyage to Pluto: NASA's New Horizons Mission Continuing Voyager's Legacy of Exploration
NASA's Mission to Pluto was a two part televised science event at NASA headquarters on August 25 - the same date that the agency's New Horizons spacecraft passed the orbit of Neptune on its way to Pluto and exactly 25 years after the Voyager spacecraft's encounter with Neptune in 1989.
Pluto
ALMA Pinpoints Pluto to Help Guide New Horizons
Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) are making high-precision measurements of Pluto's location and orbit around the Sun to help NASA's New Horizons spacecraft accurately home in on its target when it nears Pluto and its five known moons in July 2015.
Pluto
NASA ScienceCasts: One Year to Pluto
NASA's New Horizons spacecraft is only a year away from Pluto. Researchers are buzzing with anticipation as NASA prepares to encounter a new world for the first time in decades.
Pluto
Did Pluto Once Have an Underground Ocean?
If the icy surface of Pluto's giant moon Charon is cracked, analysis of the fractures could reveal if its interior was warm, perhaps warm enough to have maintained a subterranean ocean of liquid water, according to a new NASA-funded study.
Pluto
Countdown to a Rendezvous with Pluto
One of the fastest spacecraft ever built -- NASA's New Horizons -- is hurtling through the void at nearly one million miles per day. Launched in 2006, it has been in flight longer than some missions last, and it is nearing its destination: Pluto.
Pluto
The Sounds of New Horizons
What does New Horizons say when it calls home? Nothing, without the help of software that transforms zeros and ones from New Horizons' computers into images, instrument readings, or useful information on the spacecraft's status. Those datasets are then transmitted to Earth by the telecommunications (radio) system aboard New Horizons.
Pluto
Pluto Satellites' Orbits Hint of Long-Ago Collisions
A large impact 4 billion years ago may account for the puzzling orbital configuration among Pluto's five known satellites, according to a new model developed by planetary scientists from the Southwest Research Institute (SwRI).
Pluto
Names Selected by the Public in a Vote for New Pluto Moons Approved by the IAU
The IAU is pleased to announce that today it has officially recognised the names Kerberos and Styx for the fourth and fifth moons of Pluto respectively (formerly known as P4 and P5). These names were backed by voters in a recently held popular contest, aimed at allowing the public to suggest names for the two recently discovered moons of the most famous dwarf planet in the Solar System.
Pluto
Size, Shape, and Density of Dwarf Planet Makemake
A recent stellar occultation by dwarf planet Makemake provided an excellent opportunity to measure the size and shape of one of the largest objects in the Kuiper belt. The analysis of these results provided what were reported to be precise measurements of the lengths of the projected axes, the albedo, and even the density of Makemake, but these results were, in part, derived from qualitative arguments.
More top stories from February.
Pluto Mission Reports
New Horizons
Latest Video
Video: Pluto on the Horizon - Anticipating our First Encounter with the Double Planet
New Horizons Begins First Stages of Pluto Encounter
Voyage to Pluto: NASA's New Horizons Mission Continuing Voyager's Legacy of Exploration
NASA ScienceCasts: One Year to Pluto
Countdown to a Rendezvous with Pluto
Vulcan for the Win! Closing the Pluto Rocks Campaign
A Traveller's Guide to the Planets - Pluto & Beyond
New Horizons: Passport To Pluto
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