What’s intriguing about the discovery is that these objects appear to be moving in pairs. Astronomers are currently struggling to explain them.
I always hate when science reporting does this. Astronomers are not struggling to explain them, they just don’t have enough data to take a hypothesis to a theorem!
The article even tells us possible explanations:
One possibility is that these objects grew out of regions in the nebula where the density of material was insufficient to make fully fledged stars.
Another possibility is that they were made around stars and were then kicked out into interstellar space through various interactions.
“The ejection hypothesis is the favoured one at the moment,” said Prof Mark McCaughrean.