SOLAR SYSTEM

UNIVERSE

SPACE EXPLORATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which phrase is the best description of a lander?
A
A space probe that has the ability to move to to fly on another planet
B
A space probe that explores deep space
C
A space probe that lands on a planet and sends information back to Earth
D
A space probe that remains in orbit around a planet
Explanation: 

Detailed explanation-1: -Answer. Interplanetary probes fly by celestial bodies. Orbiters are placed in orbit around a celestial body. Landers land on the surface of a celestial body.

Detailed explanation-2: -The spacecraft lander is a protective “shell” that houses the rover and protects it, along with the airbags, from the forces of impact. The lander is a strong, lightweight structure, consisting of a base and three sides “petals” in the shape of a tetrahedron (pyramid-shaped).

Detailed explanation-3: -The Mars Pathfinder mission, designed to demonstrate a low-cost method for delivering a set of science instruments to the Red Planet, was the first wheeled vehicle to be used on any other planet in the solar system and served as the foundation for the Mars rovers of today.

Detailed explanation-4: -No spacecraft has gone farther than NASA’s Voyager 1. Launched in 1977 to fly by Jupiter and Saturn, Voyager 1 crossed into interstellar space in August 2012 and continues to collect data. Voyager 1 and its sister ship Voyager 2 have been flying longer than any other spacecraft in history.

Detailed explanation-5: -The Short Answer: Spacecraft send information and pictures back to Earth using the Deep Space Network (DSN), a collection of big radio antennas. The antennas also receive details about where the spacecraft are and how they are doing.

Detailed explanation-6: -Mars Pathfinder was a U.S. spacecraft that landed a base station with a roving probe on Mars on July 4, 1997. It consisted of a lander and a small 10.6-kilogram (23 lb) wheeled robotic rover named Sojourner, which was the first rover to operate on the surface of Mars.

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