This artist’s impression shows the first interstellar asteroid, `Oumuamua. Observations from ESO’s Very Large Telescope in Chile and other observatories around the world show that this unique object was travelling through space for millions of years before its chance encounter with our star system. It seems to be a dark red highly-elongated metallic or rocky object, about 400 metres long, and is unlike anything normally found in the Solar System.

You may recall that last week, researchers from the Breakthrough Initiatives set out a plan to observe ‘Oumuamua, an object thought to be from an another star system.
Based on its shape and density — it’s about 800 meters long and only 80 meters wide, and appears to be more solid than your average asteroid — scientists believed there was a very small chance that it might not be 100 percent natural.
The first phase of observations is complete and, as expected, there is no evidence of artificial signals emanating from ‘Oumuamua.
The observations took place on Wednesday, December 13 from 3:45pm ET to 9:45pm ET using the Robert C. Byrd Green Bank Telescope in West Virginia. The Breakthrough Listen team observed ‘Oumuamua across four radio bands, which span billions of individual channels from the 1GHz to 12GHz range.
As one of Breakthrough Listen’s biggest backers, …
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