Astronomy magazine podcast: Pluto’s demotion
The world’s astronomers have removed Pluto’s planetary status.
Jeremy McGovern
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August 24, 2006; updated August 25
It’s official: IAU demotes Pluto
The world’s astronomers have removed Pluto’s planetary status.
Francis Reddy
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August 19, 2006
Scientists debate Pluto’s fate
Planetary scientists discussing a proposed definition for “planet” warmed to an alternative that would leave Pluto out in the cold.
Francis Reddy
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August 16, 2006
Pluto is a planet, but one of 12?
Astronomers consider embracing Pluto’s moon, the largest asteroid, and an icy body nicknamed Xena as planets in their own right.
Francis Reddy
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June 27, 2006
Pluto’s moon’s named
Hydra and Nix are the names of Pluto’s two small moons discovered last year.
Laura Baird
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April 26, 2006
Does Pluto have rings
Planetary scientist Alan Stern fills us in on the possibility.
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February 3, 2006
Planet debate heats up
Astronomers have verified the “tenth planet” is bigger than Pluto.
Matthew Quandt
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December 21, 2005
To Pluto and beyond
The New Horizons mission aims to get a good look at the solar system’s most distant reaches.
Laura Layton
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October 31, 2005
New moon for Pluto?
The Hubble Space Telescope may have observed two new moons orbiting Pluto.
Jeremy McGovern
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October 3, 2005
The “tenth planet” gets a sidekick
Astronomers find a satellite orbiting 2003 UB313.
Francis Reddy
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August 1, 2005
How close does Pluto’s orbit come to Neptune
Looking at a solar system diagram on paper, it appears the Pluto and Neptune orbits intersect. Of course, this is not the case.
Larry Wasserman
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July 30,2005; updated August 5
Tenth planet discovered
Move over, Pluto. There’s an even larger ice world in the outer solar system.
Francis Reddy
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July 21, 2005
Pluto’s moon revals atmosphere?
A recent multi-telescope observation of Charon passing in front of a distant star will help astronomers’ understanding of Pluto’s moon.
Matthew Quandt
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February 18, 2005
Pluto at 75
Nearly a century after its discovery, understanding Pluto still doesn’t come easy.
Steele Wotkyns
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Feburary 1, 2005
Day of discovery
On February 18, 1930, a Kansas farm boy discovered what was then the largest body found in the solar system in 84 years.
Kevin Schindler
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