Language Selection

English French German Italian Portuguese Spanish

'Tenth planet' may be bigger than expected

Filed under
Sci/Tech

An observational error may have understated the size of the tenth planet - if "planet" is in fact what astronomers finally decide to call it.

The upper limit on the size of the object, temporarily called 2003 UB313, was earlier set at 3000 kilometres following the Spitzer Space Telescope's failure to spot any infrared source at its location. But as its discoverer Mike Brown notes on his website, the telescope was actually pointed at the wrong place, so the object could actually be bigger than that.

The Spitzer observations were made before the object was entered in public data bases, so Brown's group at Caltech, US, had to specify the positions of it and two other giant Kuiper Belt objects.

Spitzer was aimed correctly at two of them - but somewhere along the line an error crept in with the location of 2003 UB313. "The mistake was caught by one of the many extremely careful members of the Spitzer Science Center," Brown writes. Spitzer will check the right spot to see 2003 UB313 later in August.

Full Story.

More in Tux Machines

4MLinux 20.1 released.

This is a minor maintenance release in the 4MLinux STABLE channel. The release ships with the Linux kernel 4.4.34, which restores PAE support that "magically" disappeared in 4MLinux 20.0 (sorry :-). Additionally, some popular programs (Double Commander, Dropbox, Firefox, Java RE, Opera, PeaZip, Thunderbird, Wine) have been updated, too. Read more

Refracta 8.0 Is a Pint-Sized Powerhouse

Refracta is a somewhat obscure Linux distribution that offers exceptional functionality and stability. Obscurity is not always a bad thing when it comes to Linux distros. You can find some very worthwhile alternatives to your current operating system. Refracta is a big surprise in a small package. Many look-alike desktop distros are difficult to distinguish from run-of-the-mill garden varieties. Others offer new adopters something unique that makes using them fun and productive. Refracta is one of the few full-service Linux distros that makes an easy and more convenient replacement for pocket Linux options such as Puppy Linux. Not all Linux distros that install to a USB drive -- and have the ability to save files and system settings in a persistent mode -- work equally well. Read more

Clear Linux With Mesa 13 Is A Strong Match For Intel Linux Performance

When benchmarking Intel's Clear Linux distribution earlier this year we found its Intel graphics performance to be quite good and slightly faster than other Linux distributions even when Clear was using an older version of Mesa. Now with Clear Linux having switched to Mesa 13, I decided to run some fresh Intel OpenGL benchmarks on it compared to other distributions. Read more

PTS: PHP 7.1 vs. PHP 7.0 vs. HHVM Benchmarks

With today's PHP 7.1 release, performance isn't highlighted as much as language improvements to this first major update to PHP7, but I decided to run some PHP 7.1, PHP 7.0, PHP 5.6, PHP 5.5, and HHVM benchmarks of our open-source Phoronix Test Suite code-base. These self-tests of the Phoronix Test Suite aren't the conventional PHP workload of just a CMS, blog, or other web application that can be cached, etc, but effectively of a PHP CLI application. So keep this in mind when looking at the results and that your mileage may vary depending upon use-case. Read more