Language Selection

English French German Italian Portuguese Spanish

Pluto: And then there were eight

Filed under
Sci/Tech

Pluto has just been demoted. The celestial body, long known as one of the nine planets of the solar system, will now be considered a "dwarf planet," the General Assembly of the 2006 International Astronomical Union ruled in a vote Thursday in Prague, Czech Republic.

Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune will be defined as "classical planets."

The IAU said in a statement on Thursday that the definition for planet is now officially "a celestial body that (a) is in orbit around the Sun, (Cool has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape and (c) has cleared the neighborhood around its orbit."

Full Story.

Textbook makers grapple with Pluto demotion.

Stick to Computer Rants

As any high school physics student will tell you, CENTRIPETAL FORCE is what influences the orbital path.

MASS is completely INDEPENDENT of size or distance from the sun (or any other body in the universe).

The boundaries of the Universe has NOTHING to do with how far something is from our Sun.

I think it's safe to say that even on a bad day, an Astrophysicist has a better understanding of simple physics then you do.

The new planetary definition has nothing to do with physics and everything to do with nomenclature. As more and more orbiting bodies are found within our solar system, as well as in other star systems, the IAU wanted a more accurate way of defining what that body is. Since the original definitions predated Newton, I'd say it was about time to bring things up to date.

I feel sad for Pluto. I

I feel sad for Pluto. I think that they should keep Pluto as a planet if only for the more than 75 years of being known as one. They could easily correct its status by way of explanation in text books.It can be taught in schools that Pluto is not really a planet according to the new definition, but it will be kept in the list of 9 major planets. Then new discoveries can be placed in subgroups like "dawrf planets"and other terms they came up with. Or if they're going to remove Pluto, might as well use the term "plutonian objects"; sort of like a tribute.

Comment viewing options

Select your preferred way to display the comments and click "Save settings" to activate your changes.

More in Tux Machines

Linux KPI-Based DRM Modules Now Working On FreeBSD 11

Thanks to work done by Hans Petter Selasky and others, this drm-next-kmod port is working on FreeBSD 11 stable. What's different with this package from the ports collection versus the ported-from-Linux Direct Rendering Modules found within the FreeBSD 11 kernel is that these DRM modules are using the linuxkpi interface. Read more

Fedora and Red Hat's Finances

GNOME: WebKit, Fleet Commander, Introducing deviced

  • On Compiling WebKit (now twice as fast!)
    Are you tired of waiting for ages to build large C++ projects like WebKit? Slow headers are generally the problem. Your C++ source code file #includes a few headers, all those headers #include more, and those headers #include more, and more, and more, and since it’s C++ a bunch of these headers contain lots of complex templates to slow down things even more. Not fun.
  • Fleet Commander is looking for a GSoC student to help us take over the world
    Fleet Commander has seen quite a lot of progress recently, of which I should blog about soon. For those unaware, Fleet Commander is an effort to make GNOME great for IT administrators in large deployments, allowing them to deploy desktop and application configuration profiles across hundreds of machines with ease through a web administration UI based on Cockpit. It is mostly implemented in Python.
  • Introducing deviced
    Over the past couple of weeks I’ve been heads down working on a new tool along with Patrick Griffis. The purpose of this tool is to make it easier to integrate IDEs and other tooling with GNU-based gadgets like phones, tablets, infotainment, and IoT devices. Years ago I was working on a GNOME-based home router with davidz which sadly we never finished. One thing that was obvious to me in that moment of time was that I’m not doing another large scale project until I had better tooling. That is Builder’s genesis, and device integration is what will make it truly useful to myself and others who love playing with GNU-friendly gadgets.

KDE: Usability & Productivity, AtCore , Krita

  • This week in Usability & Productivity, part 6
  • AtCore takes to the pi
    The Raspberry Pi3 is a small single board computer that costs around $35 (USD). It comes with a network port, wifi , bt , 4 usb ports , gpio pins , camera port , a display out, hdmi, a TRRS for analog A/V out. 1GB of ran and 4 ~1GHz armv8 cores Inside small SOC. Its storage is a microSd card they are a low cost and low power device. The Touchscreen kit is an 800×480 display that hooks to the Gpio for touch and dsi port for video. To hold our hardware is the standard touch screen enclosure that often comes with the screen if you buy it in a kit.
  • Look, new presets! Another Krita 4 development build!
    We’ve been focusing like crazy on the Krita 4 release. We managed to close some 150 bugs in the past month, and Krita 4 is getting stable enough for many people to use day in, day out. There’s still more to be done, of course! So we’ll continue fixing issues and applying polish for at least another four weeks. One of the things we’re doing as well is redesigning the set of default brush presets and brush tips that come with Krita. Brush tips are the little images one can paint with, and brush presets are the brushes you can select in the brush palette or brush popup. The combination of a tip, some settings and a smart bit of coding! Our old set was fine, but it was based on David Revoy‘s earliest Krita brush bundles, and for Krita 4 we are revamping the entire set. We’ve added many new options to the brushes since then! So, many artists are working together to create a good-looking, useful and interesting brushes for Krita 4.