The STS-90 Neurolab payload and four Getaway Specials (GAS) await payload bay door closure in the orbiter Columbia today in Orbiter Processing Facility bay 3.

The STS-90 Neurolab payload and two of the four Getaway Specials (GAS) await payload bay door closure in the orbiter Columbia today in Orbiter Processing Facility bay 3.

GAS container on the left contains the COLLisions Into Dust Experiment, or COLLIDE, which will study low velocity collisions between space-borne particles in an attempt to better understand planetary ring dynamics.