A group of comets with unexplained movements presents a quandary D avide Farnocchia hunts down and tracks asteroids, and ...

The ultimate purpose of PUNCH is to use its four instruments — three wide-field imagers (WFI) and a near-field imager (NFI) — ...

It was helpful when figuring out the other theme answers to know that each of them would begin with the name of a PLANET. Thank you, Jay, for this enjoyable puzzle.

One of astronomy's biggest puzzles may have been solved by a new ... could constrain rotation from high-precision observations of solar system objects, such as those performed by the Gaia satellite." ...