Mars Global Surveyor
We use science, technology and some help from gravity.
They reverse one another in respect to the atmosphere.
Mariner 2 in 1962. The planet was Venus.
The natural components of the atmosphere doesn't react each other.
There is another layer of atmosphere. It is called troposphere.
Mariner 9 took on that spacecraft's mission of mapping 70 percent of the Martian surface in addition to its own objective of studying changes over time in the Martian atmosphere and surface.
Moon, protectorate, spacecraft...
What makes the space shuttles different than other space craft is that they are reusable. Most spacecraft are used one time, then disposed of. The Russian Soyuz and the American Apollo spacecraft are examples of this. Another difference is the way they return to Earth. After other spacecraft reenter Earth's atmosphere, they deploy parachutes and make water landings (US Apollo), or land in snow (Russian Soyuz). The space shuttle lands like an airplane.
forfeit, concede
* As there is no atmosphere to trap the heat, temperatures on the moon are very extreme ranging from 107°C in the day to -153°C at night. Also, if you step from a sunlight area suddenly into a shadowed area (like behind a big rock), there would be a huge drop in temperature. * Another point is that as there is no atmosphere to slow them down, spacecraft cannot use parachutes to land on the moon.
Venera 7 on Venus in 1970.
An Aircraft fly from one place of earth to another place. Whereas a spacecraft travels from earth to a heavenly bodies or vice versa.
Mariner 9
when it wants to study another planet or come back to earth
We use science, technology and some help from gravity.
atmosphere
no