Suggested Searches

Planetary Defense Team

Seal shows a guard in a castle turret using a telescope to watch out for asteroids and comets in the sky.

PDCO Staff

Image of Kelly Fast

Kelly Fast

Acting Planetary Defense Officer

Read Kelly's Bio
Image of Josh Handal

Josh Handal

Executive Officer

Read Josh's Bio
Image of Adelle Helble

Adelle Helble

Acting Near-Earth Object Observations Program Manager

Read More
Image of Andrea Riley

Andrea Riley

Program Executive

Read Andrea's Bio
Michael Egan

Michael Egan

Program Scientist

Read More
Image of Julie Ziffer

Julie Ziffer

Program Officer

Read More

PDCO Liaisons and Support

Image of Molly Wasser

Molly Wasser

Public Affairs Officer and Media Lead

Read Molly's Bio
Image of Tom Statler

Thomas Statler

Program Scientist

Read Tom's Bio
Image of Rob Landis

Rob Landis

Program Officer

Read Rob's Bio
Image of Tricia Talbert

Patricia Talbert

Multimedia Specialist

Read Tricia's Bio
Image of Linda Billings

Linda Billings

Consultant

Read Linda's Bio

Planetary Defense Missions

NEO Surveyor

NEO Surveyor

Designed to help NASA discover and characterize most of the potentially hazardous asteroids and comets that come within 30 million miles of Earth.

DART with asteroids

DART

The world's first demonstration of asteroid deflection technology.

Facebook logo
@NASA@NASASpaceAlerts
Instagram logo
@NASA@NASASolarSystem
Linkedin logo
@NASA
Keep Exploring

Discover More Topics From NASA

Asteroids, Comets & Meteors

Our Solar System

Kuiper Belt

Planetary Science

NASA’s planetary science program explores the objects in our solar system to better understand its history and the distribution of…