The Hubble Space Telescope was put into orbit on April 25, 1990.
Unfortunately, on June 25, 1990, a spherical aberration was discovered
in Hubble's primary mirror. To correct this, astronauts had to work in
space. To prepare for the mission, two teams of astronauts practiced
making repairs under simulated space conditions. Each team of
astronauts went through 15 identical scenarios. The times to complete
each scenario were recorded in days.
Usage
Hubble
Arguments
Format
A data frame with 15 observations on the following 2 variables: