The John J. McCarthy Observatory in New Milford will hold its next “Second Saturday Stars” program April 9 from 8 to 10 p.m.

The program will be the second annual State of the Earth presentation.

Monty Robson will give a brief history on the changes that have taken place on the planet, and argue that protecting the biosphere is the most important thing that we can do.

For more information, visit www.mccarthyobservatory.org