In this artist's rendering the Galileo probe, with its heat shield below and a parachute above, enters the turbulent upper atmosphere of Jupiter. Galileo released its probe in September 1995, about 150 days before it was scheduled to reach Jupiter. The orbiter's trajectory will be corrected to send it into Jupiter orbit. The probe was scheduled to enter the upper atmosphere on December 7, 1995, at about 48 kilometers (30 miles) per second. Data from its six instruments were to be relayed to Earth via the orbiter during the probe's expected 75 minutes of operation before temperature and pressure destroy it.