Detroit Lions visit NASA's Johnson Space Center
View photos from the Detroit Lions' visit to NASA's Johnson Space Center on Friday, Aug. 16, 2019 in Houston.

Kenny Golladay, Trey Flowers and Quandre Diggs on the Detroit Lions' visit to NASA's Johnson Space Center on Friday, Aug. 16, 2019 in Houston.

Matt Patricia's signature on a spacecraft hatch on the Detroit Lions' visit to NASA's Johnson Space Center on Friday, Aug. 16, 2019 in Houston.

NASA Astronaut Christopher J. Cassidy speaks to the team during the Detroit Lions' visit to NASA's Johnson Space Center on Friday, Aug. 16, 2019 in Houston.

Matt Patricia introduces NASA Astronaut Christopher J. Cassidy during the Detroit Lions' visit to NASA's Johnson Space Center on Friday, Aug. 16, 2019 in Houston.

Bob Quinn and NASA Astronaut Christopher J. Cassidy during the Detroit Lions' visit to NASA's Johnson Space Center on Friday, Aug. 16, 2019 in Houston.

Jarrad Davis films NASA Astronaut Christopher J. Cassidy speaking to the team on the Detroit Lions' visit to NASA's Johnson Space Center on Friday, Aug. 16, 2019 in Houston.

NASA Astronaut Christopher J. Cassidy speaks to the team during the Detroit Lions' visit to NASA's Johnson Space Center on Friday, Aug. 16, 2019 in Houston.

NASA Astronaut Christopher J. Cassidy speaks to the team during the Detroit Lions' visit to NASA's Johnson Space Center on Friday, Aug. 16, 2019 in Houston.

NASA Astronaut Christopher J. Cassidy speaks to the team during the Detroit Lions' visit to NASA's Johnson Space Center on Friday, Aug. 16, 2019 in Houston.

NASA Astronaut Christopher J. Cassidy speaks to the team during the Detroit Lions' visit to NASA's Johnson Space Center on Friday, Aug. 16, 2019 in Houston.

Graham Glasgow, Matt Patricia and Taylor Decker check out a moon rock that is over 2.5 billion years old at NASA's Johnson Space Center on Friday, Aug. 16, 2019 in Houston.

Detroit Lions visit NASA's Johnson Space Center on Friday, Aug. 16, 2019 in Houston.

Graham Glasgow and Matt Patricia check out a moon rock that is over 2.5 billion years old at NASA's Johnson Space Center on Friday, Aug. 16, 2019 in Houston.

Sam Martin and Don Muhlbach on the Detroit Lions' visit to NASA's Johnson Space Center on Friday, Aug. 16, 2019 in Houston.

Detroit Lions visit NASA's Johnson Space Center on Friday, Aug. 16, 2019 in Houston.

Kenny Golladay, Trey Flowers and Jalen Reeves-Maybin on the Detroit Lions' visit to NASA's Johnson Space Center on Friday, Aug. 16, 2019 in Houston.

Jahlani Tavai on the Detroit Lions' visit to NASA's Johnson Space Center on Friday, Aug. 16, 2019 in Houston.

Detroit Lions visit NASA's Johnson Space Center on Friday, Aug. 16, 2019 in Houston.

Detroit Lions visit NASA's Johnson Space Center on Friday, Aug. 16, 2019 in Houston.

NASA Astronaut Christopher J. Cassidy and Matt Patricia on the Detroit Lions' visit to NASA's Johnson Space Center on Friday, Aug. 16, 2019 in Houston.

Jarrad Davis and NASA Astronaut Christopher J. Cassidy during the Detroit Lions' visit to NASA's Johnson Space Center on Friday, Aug. 16, 2019 in Houston.

Will Harris on the Detroit Lions' visit to NASA's Johnson Space Center on Friday, Aug. 16, 2019 in Houston.

Detroit Lions visit NASA's Johnson Space Center on Friday, Aug. 16, 2019 in Houston.

Mike Ford, Ty Johnson and Amani Oruwariye on the Detroit Lions' visit to NASA's Johnson Space Center on Friday, Aug. 16, 2019 in Houston.

Zach Zenner on the Detroit Lions' visit to NASA's Johnson Space Center on Friday, Aug. 16, 2019 in Houston.

Detroit Lions visit to NASA's Johnson Space Center on Friday, Aug. 16, 2019 in Houston.

Detroit Lions visit NASA's Johnson Space Center on Friday, Aug. 16, 2019 in Houston.

Jalen Reeves-Maybin on the Detroit Lions' visit to NASA's Johnson Space Center on Friday, Aug. 16, 2019 in Houston.

Detroit Lions visit NASA's Johnson Space Center on Friday, Aug. 16, 2019 in Houston.

Detroit Lions visit NASA's Johnson Space Center on Friday, Aug. 16, 2019 in Houston.

Detroit Lions visit NASA's Johnson Space Center on Friday, Aug. 16, 2019 in Houston.

Matt Patricia signs a spacecraft hatch on the Detroit Lions' visit to NASA's Johnson Space Center on Friday, Aug. 16, 2019 in Houston.

Matt Patricia signs a spacecraft hatch on the Detroit Lions' visit to NASA's Johnson Space Center on Friday, Aug. 16, 2019 in Houston.