Space probe

A space probe is an uncrewed robotic spacecraft designed to explore outer space and send scientific information back to Earth. These amazing machines travel far from our planet to learn about the Moon, planets, moons, asteroids, comets, the Sun, and even interstellar space.

Unlike satellites that stay in orbit around Earth, space probes journey to other places in space or travel far out into the vastness of deep space. They help scientists understand our universe better by collecting data and images from places humans cannot yet reach.

History

The first space probes were built in the late 1950s during the early days of space exploration. Early missions from the Soviet Union, like the Luna probes, and from America, like the Pioneer program, focused on studying the Moon. Later, probes went on to explore planets such as Venus, Mars, Jupiter, and Saturn, as well as other objects in our Solar System.

Space probes come in different types depending on their tasks. Some, called flyby probes, fly close to a celestial body but do not stay in orbit. Others, known as orbiters, enter orbit around a planet or moon to watch it over time. Lander probes touch down on the surface, and rovers can move around on that surface. Some probes also study atmospheres by descending through them.

Many space probes have helped us learn amazing things. In 1962, the Mariner 2 probe became the first spacecraft to fly by Venus. The Voyager probes explored the outer planets and then entered the space between stars. The Cassini–Huygens mission studied Saturn and its moons, and its Huygens lander landed on Titan in 2005. Today, probes continue to travel farther, with Voyager 1 becoming the first human-made object to enter interstellar space in 2012. Newer missions like the Parker Solar Probe and Lucy are studying the Sun and ancient asteroids with new detail.