In this shot, star trails make delightful arcs in the sky over a decommissioned radio telescope antenna.
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.
Streaks of stars over a radio telescope antenna at Mullard Radio Astronomy Observatory. Photo: João Yordanov Serralheiro 
