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