Catalyst: Closer look at asteroid Bennu

“Catalyst” follows the OSIRIS-REX satellite that travelled 2 million kilometers to catch up with asteroid Bennu and photograph its surface, all in preparation for an eventual landing and return mission. Experts at NASA’s Jet Propulsion Lab and ASU’s Meteorite Museum explain how Bennu could help astrophysicists defend Earth from asteroid impacts.

Also in this episode:

Catalyst: ELL teaching programs

In this segment:

Steve Chesley, NASA JPL Planetary Defense
Philip Christensen, ASU School Of Earth and Space Exploration
Meenakshi Wadhwa, School of Earth and Space Exploration

Ken Burns presents 'Hemingway'

Ken Burns and Lynn Novick explore the life and work of the legendary writer and his enduring influence on literature and culture.

'Downton Abbey' returns to Arizona PBS

Downton Abbey season 1 cast

Return to the beginning of the phenomenon Feb. 27 (streaming) and March 7 (on air). After the Titanic goes down, the Crawley family and their household meet the new heir. All the drama, romance, scheming and triumph lie ahead.

Overcoming Anxiety, Depression, Trauma and Grief with Daniel Amen, M.D. and Tana Amen, R.N.

Dr. Daniel Amen and Tana Amen

Dr. Daniel Amen shows you how to tame your hidden dragons and help you feel happier, more positive and in control of your own emotions.