The New Horoscope of Missions

The mission ended when the probe's attitude control gas ran out on March 24, As the spacecraft was no longer controllable without its nitrogen gas thrusters, a command was sent to the probe to shut down its transmitter.

The close observations collected two important sets of data. This was a surprise to scientists, because Mercury spins so slowly on its axis.

Secondly, visual data was provided, which showed the high number of craters on the surface of the planet. The visual data also allowed scientists to investigate the composition and age of the planet. It was launched from Cape Canaveral on August 3, , after a one-day delay due to bad weather. In order to correct the speed of the satellite it undertook several gravitational slingshot flybys of Earth, Venus and Mercury. Furthermore, the probe made three passes of Mercury, one in January , one in October and one in September , before entering orbit in The mission was scheduled to end sometime in , when it was estimated that there would no longer be enough fuel to maintain the probe's orbit.

Specifically, the scientific objectives of the mission are: This mission to Mercury is to include two satellites: Each orbiter has a distinct purpose: BepiColombo will use solar electric propulsion ion engines and then also use similar manoeuvres at the Moon, Venus, and Mercury.

These techniques will slow the orbiters as they approach Mercury. It is essential to avoid using fuel to slow the orbiters as they get closer to the Sun to minimize the gravitational influence of the Sun. The BepiColombo mission was approved in November , [23] and successfully launched on October 20, It is scheduled to enter orbit around Mercury in February It will then gather data for one, or possibly two years.

The currently anticipated launch date is It is planned to be a lander.

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Mercury Observer was a cancelled proposal in the Planetary Observer program. The BepiColombo mission comprises two satellites launched together: The MPO will have a circular orbit much closer to Mercury. Share your thoughts with other customers.

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