The Milky Way is in the background of this image taken on the Greek island of Naxos. In the foreground is a street art painting of Pandora done by the Balinese artist Wild Drawing.
The pristine star formed outside the Milky Way and later drifted into our galaxy.
The collision likely resembles the one that formed the Moon around 4.5 billion years ago.
Without the mass stellar migration, life may not have been able to form on Earth.
Service workers, meet the future.
Venus may be hiding a vast network of underground caves carved by ancient lava.
A closer look at the planets around a star called LHS 1903 may just flip our understanding of how planetary systems form.
