Sometimes the value of scientific research and the implications of how science is done and regarded aren’t understood for years. Still, some science stories from the past year stood out. From colliding neutron stars to DNA editing to that visitor from another solar system, here are our choices for the top stories of 2017:
Astronomers announced a new era when they detected the collision of two neutron stars.
DNA was edited in human embryos for the first time in the U.S. (Go deeper: researchers questioned the report. But gene editing has arrived in medicine — the first clinical trials in humans are expected to start in the next year or so.)
In another first, an object from another solar system was spotted entering our stellar territory. Initially it was thought to be an asteroid but on further analysis it could be a comet.