Comet C/2021 A1 Leonard takes center stage in December for sky watchers across the planet. Meet the Catalina Sky Survey astronomer who discovered the comet.

In a year marked by a pandemic and raging wildfire, CSS responds with a remarkable year of discovery.

The Catalina Sky Survey Invites Citizen Scientists to Join in the Search of Distant Trans-Neptunian Objects.

For only the second time in history astronomers have discovered a second, temporarily captured mini moon.

Catalina Sky Survey astronomer Teddy Pruyne discovers tiny asteroid, missing Earth by a cosmic whisker.

On April 18, 2019 newly discovered asteroid ‘2019 GC6’ will graze by the Earth passing between the Earth and moon.

The house-sized asteroid – designated 2019 EA2 – will pass safely by our planet on the night of March 21-22, 2019.

The Catalina Sky Survey posted 1056 new near-Earth objects for 2018, the first survey to discover more than 1000 in a calendar year.  The record-setting 2018 batch also pushed CSS’s historical total to over 9000 new NEOs.

On October 19, 2018 Earth was grazed by a small asteroid designated as ‘2018 UA’. The space rock was discovered by the NASA-funded and University of Arizona based Catalina Sky Survey only 10 hours before its closest approach.

For only the third time in history a near-Earth asteroid was discovered before impacting Earth. Remarkably, all three objects have been discovered by one observer at the Catalina Sky Survey.