SOLAR SYSTEM

Detailed explanation-1: -A space probe is a robotic spacecraft that does not orbit Earth, but instead, explores further into outer space. Space probes have different sets of scientific instruments onboard.

Detailed explanation-2: -A probe is a spacecraft that travels through space to collect science information. Probes do not have astronauts.

Detailed explanation-3: -An observatory spacecraft does not travel to a destination to explore it. Instead, it occupies an Earth orbit or a solar orbit from where it can observe distant targets free of the obscuring and blurring effects of Earth’s atmosphere.

Detailed explanation-4: -Sputnik: The One That Started It All On October 4, 1957, the Soviet Union began the history of robotics in space with the successful launch of Sputnik 1, the first satellite to orbit Earth.

Detailed explanation-5: -Usually, the word “satellite” refers to a machine that is launched into space and moves around Earth or another body in space. Earth and the moon are examples of natural satellites. Thousands of artificial, or man-made, satellites orbit Earth.

Detailed explanation-6: -Flyby spacecraft. Orbiter spacecraft. Atmospheric spacecraft. Lander spacecraft. Penetrator spacecraft. Rover spacecraft. Observatory spacecraft. Communications & Navigation spacecraf.