MYSTERIOUS - “PLANET NINE”

MYSTERIOUS - “PLANET NINE”

In the outermost reaches of our solar system, far beyond the orbit of Neptune or even that of the dwarf planet Pluto, the presence of an invisible giant has long been suspected.

At a distance nearing 26 times that which separates our Sun and Neptune, this hypothetical planet—if it exists—remains elusive. Searches conducted by Hawaii’s Pan-STARRS array, as well as surveys by NASA’s infrared space telescope, the Wide-field Infrared Survey Explorer (WISE) have turned up empty-handed. Despite this, astronomers have yet to exclude the possibility that a mysterious “Planet Nine” could be out there.

Now, research published in The Astronomical Journal by an international team could lend new insights to the search for this as-yet undetected neighbor, although from an unlikely source: an exoplanet with a peculiar orbit... 336 light-years from Earth.

Kommentoin:

Tehtävä tulevalle tähtitieteilijälle:

Light year - Valovuosi on matka, jonka valo kulkee yhdessä vuodessa, eli noin 9,46 biljoonaa kilometriä. 

Kymysys:

Siis paljonko Maalla on etäisyyttä Planet Nine:n kilometreissä ja tavallinen aika, ennen kuin sen valo saapuu Maahan???