Ralph Fiennes as Hades, God of the Underworld, in Clash of the Titans (2010). Image Source: invisionfree.
Pluto, the planet whose value was downgraded, is fittingly named after the god of the Underworld, because this planetoid guards the point where the solar system ends and the outer system around our sun, the Kuiper Belt, begins. Pluto was discovered in 1930, but only in the new Millennium has our technology become advanced enough for us to begin to understand the vast Netherworld over which Pluto presides along with another minor body, Eris, once designated as the tenth planet. Our new awareness of the Kuiper Belt is the reason why Pluto was downgraded, and why Eris, discovered only in 2005, was downgraded too. Pluto at this time dominates the wild area beyond the planet Neptune, where we reach the limits of knowledge of our solar system.
On to the teeny tiny moons Kerberos & Styx! Did you know my science team found them after I launched? #PlutoFlyBy pic.twitter.com/tudRSnAm3M
— NASA New Horizons (@NASANewHorizons) July 13, 2015
Styx, one of several rivers in Hell, with ferryman Charon. Image Source: The Seven Worlds.
Depictions of the hellhound, Cerberus, and the Hydra in the film, Hercules (2014). Images Source: fxguide.
Always a pecking order: the top four planetoids or 'dwarf planets' are accepted by the International Astronomical Union as minor planets of the solar system. The bottom four are candidates for dwarf planet status. Image Source: Wiki.
Extending the outer limits of knowledge: the outer bodies of the solar system are a huge source of carbon-bearing molecules, which are found in the DNA of every creature on Earth. The Belt also abounds with frozen volatile ices, which means that water and life on Earth may have originated in the Kuiper Belt and been borne by comet strikes to our planet. That is why the close fly-by by NASA craft New Horizons on 14 July 2015 is so stunning. Astronomers have already photographed something glittering at Pluto's north pole. You can follow the live NASA news briefing on 14 July 2015 at 7:30 a.m. EDT here. There will be another live Pluto flyby media briefing on 14 July 2015 at 8:15 a.m. EDT here. After New Horizons passes Pluto, it will continue taking photos in the Kuiper Belt if NASA receives a sufficient budget to continue the project.
Other links:
- Twitter, NASA New Horizons
- Twitter, #PlutoFlyby
- Twitter, #PlutoTime
- Live Comet Data, live data on the spacecraft
- See Pluto Now
- NASA television / media coverage
- NASA documentary, The Year of Pluto, discovery of Pluto up to New Horizons mission
- NASA press conference on New Horizons call-in, 14 July 2015 at 9:30 p.m. EDT
























