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Mars -Curiosity mission
Maria Dancheva 10b
Characteristics
Planet profile
- the fourth planet in our solar system;
- there are seasons, similar to the ones on Earth;
- it has no magnetosphere;
- the atmosphere isn't like Earth's;
Planet
Satellites
Satellites
Crew less spacecrafts have been sent to Mars by the Soviet Union, the United States, Europe, and India to study the planet's surface, climate, and geology.
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Landers
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Rovers
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Orbiters
Curiosity mission
Goals:
- investigation of the climate and geology;
- if the planet ever offered environmental conditions favorable for microbial life;
- planetary habitability studies in preparation for human explorations;
curiosity mission
Rover
curiosity rover
Curiosity has a mass of 899 kg including 80 kg of scientific instruments. The rover is 2.9 m long by 2.7 m wide by 2.2 m in height.
Gale on Mars
How it works
Power source:
- Curiosity is powered by a radioisotope thermoelectric generator;
- Radioisotope power systems;
Communications
Communication
- Signals between Earth and Mars take an average of 14 minutes, 6 seconds;
- Curiosity can communicate with Earth directly at speeds up to 32 kbit/s;
Alpha particles
Alpha Particle X-ray Spectrometer
The APXS instrument irradiates samples with alpha particles and maps the spectra of X-rays that are re-emitted for determining the elemental composition of samples.
Notes
Heat rejection system
The thermal system warms the rover for most of the Martian year.
The thermal system does so in several ways:
- passively, through the dissipation to internal components;
- by electrical heaters strategically placed on key components;
- by using the rover heat rejection system;