Alan Stern Puts His Stamp On Pluto

Episode Summary

Executive Summary: This Planetary Radio episode centers on New Horizons’ progress toward Pluto, a campaign to create a commemorative U.S. postage stamp, and Alan Stern’s push for suborbital science research. The show also covers Emily’s new video blog series, Bill Nye’s warning that NASA planetary science funding cuts threaten future exploration, and Bruce Betts’ skywatching update and trivia about which nations have sent spacecraft beyond Earth orbit.

Main Topics: New Horizons status and Pluto outreach stamp: Alan Stern explains the mission’s progress toward Pluto, the long lead time required to secure a U.S. stamp, and the public petition driving the proposal. NASA planetary science budget concerns: Bill Nye argues that proposed budget cuts would erode expertise and jeopardize flagship missions and the search for life in the outer solar system. Suborbital science conference: Stern describes the Next Generation Suborbital Researchers Conference, aimed at turning emerging commercial spaceflight into a platform for science, education, and technology development. Emily Loctewale’s video series and blog outreach: The episode introduces Snapshots from Space and highlights blog posts about Kuiper Belt objects and a teen-made logarithmic scale universe project. Night sky highlights and Mars opposition: Bruce Betts previews a close Venus-Jupiter pairing, a Moon conjunction, and Mars approaching opposition. Trivia on spacecraft beyond Earth orbit: Betts clarifies which countries count as having sent spacecraft beyond Earth orbit and explains exclusions such as China’s L2 mission and Italy’s role in Cassini-Huygens.

Key Arguments: New Horizons deserves public recognition through a postage stamp because the mission symbolizes U.S. exploration of Pluto and the Kuiper belt, and the Postal Service’s multi-year process means the petition must begin early. Planetary science cuts of over $300 million per year would compound over time and effectively jeopardize flagship-class missions like Curiosity or Cassini-level projects. Losing engineering and mission expertise is not easily reversible; once specialists are dispersed, the capability to land on Mars or explore outer-planet moons is difficult to rebuild. Suborbital vehicles are more than tourist craft: they can support research, technology development, and education, which justifies convening scientists around them now. The Kuiper Belt is more strongly shaped by Neptune than many people realize, because most of the largest objects have orbits that return close to Neptune. China’s Chang’e 2 at Earth-Moon L2 does not count as beyond Earth orbit because L2 remains gravitationally bound to Earth, while Italy’s role in Cassini does not qualify as having provided a spacecraft themselves.

Data Points: New Horizons cruise duration: 7th year of a 9-year cruise - Alan Stern’s status update on the mission to Pluto Launch date: January 2006 - New Horizons launch timeline Distance remaining to Pluto: just under 10 AU - Stern describing the spacecraft’s current position Distance traveled: about 22 AU behind - New Horizons has already covered most of its journey Pluto encounter start: January 2015 - Why the stamp proposal must be submitted early Stamp petition deadline: 13 March - Chosen to coincide with Pluto’s discovery announcement anniversary Typical stamp petition signatures: 5,000 to 10,000 - Stern explains usual public-support levels for stamp proposals Goal for New Horizons stamp petition: 100,000 signatures - Ambitious target for Planetary Society supporters Budget cut discussed: over $300 million per year - Bill Nye on proposed NASA planetary science reductions Suborbital conference date: 27 February 2012 - Next Generation Suborbital Researchers Conference start date Conference attendance: 250 first year; 350 last year; 400 to 450 expected this year - Growth of the annual suborbital meeting Kuiper Belt distance example: 100 AU - Stern noting Eris’s distance from the Sun Eris orbital period: about 500 years - Used to illustrate how far its orbit extends back toward Neptune Mars opposition date: 3 March - Bruce Betts’ skywatching segment Moon-Venus-Jupiter conjunction: 25-26 February - Upcoming close grouping in the evening sky Supernova 1987A anniversary: 25 years - Betts’ note about the famous supernova observation anniversary

Pivotal Quotes: "We’re disappointed. We’re heartbroken. We’re going to fight back, or whatever the expression is." — Bill Nye: Reaction to the released federal budget and NASA planetary science cuts "You can’t just let these rocket scientists and engineers go and try to reestablish this ability again." — Bill Nye: Warning that expertise in planetary exploration is not easily rebuilt "Neptune is really in charge of the Kuiper belt, even of Eris." — Alan Stern: Explaining the orbital structure of large Kuiper Belt objects

Implications: Listeners are being asked to support planetary exploration directly—through a stamp petition, advocacy against budget cuts, and engagement with public outreach. The episode signals that science access, workforce retention, and new commercial flight opportunities will shape the next era of space exploration.