The new findings strengthen the "RNA world" hypothesis that describes how the first life on Earth could have used RNA instead of DNA.
So far, humanity has yet to find its first “exomoon” - a Moon orbiting a planet outside of the solar system. But that hasn’t been for lack of trying. According to a new paper by Thomas Winterhalder of the European Southern Observatory and his co-authors available as a pre-print on arXiv, the reason isn’t because those Moons don’t exist, but simply because we lack the technology to detect them. They propose a new “kilometric baseline interferometer” that can detect moons as small as the Earth up to 200 parsecs (652 light years) away.

