The first ever interstellar object was detecte…

astrophysics-daily:

astrophysics-daily:

About a month ago was detected Oumuamua, a highly elongated asteroid coming from outside our Solar System.

This is the first time such an “interstellar traveller” is detected : its orbital eccentricity is the highest ever measured in our Solar System, meaning this asteroid travels through our galaxy, the Milky Way.

It was named “ ’Oumuamua ”, the Hawaiian for “scout” – a messenger from the past.

The asteroid’s alien nature is reflected in its bizarre properties : Oumuamua is about 180 meters long but only 30 metres wide, and travels at a up to 88 km/s – a much higher speed than our Solar System’s asteroids’.

The paper was published yesterday in Nature. Make sure to visit its Wikipedia page or the NASA article about it!

Image credit : ESO/M.Kornmesser

EXCITING NEWS ABOUT OUR INTERSTELLAR TRAVELLER

New data means new papers! The traveller has deviated from its calculated orbit. By some, this is supposed to be due to jets of gas – emerging with the temperature change as the object travels in the solar system:

More recent research excludes this possibility, and even suggests ‘Oumuamua being a alien light sail

And if you are curious for more, a total of 79 papers have been published on this interesting object.