In the modern era, the Moon has continued to serve as a focal point for astronomical and scientific research, as well as space exploration. In fact, the Moon is the only celestial body outside of Earth that humans have actually walked on. The first Moon landing took place on July 20th, , and Neil Armstrong was the first person to set foot on the surface.
Since that time, a total of 13 astronauts have been to the Moon, and the research that they carried out has been instrumental in helping us to learn about its composition and formation.
Thanks to examinations of Moon rocks that were brought back to Earth, the predominant theory states that the Moon was created roughly 4. This collision created a massive cloud of debris that began circling our planet, which eventually coalesced to form the Moon we see today.
It is also tidally locked with Earth, meaning that one side is constantly facing towards us while the other is facing away.
The Jovian system, on the other hand, has 67 known moons. The four largest are known as the Galilean Moons , which are named after their discoverer, Galileo Galilei. They include: Io , the most volcanically active body in our Solar System; Europa , which is suspected of having a massive subsurface ocean; Ganymede , the largest moon in our Solar System; and Callisto , which is also thought to have a subsurface ocean and features some of the oldest surface material in the Solar System.
This groups includes the moons of Metis , Adrastea , Amalthea , and Thebe. Jupiter also has an array of Irregular Satellites, which are substantially smaller and have more distant and eccentric orbits than the others. In just about every way imaginable, Earth and Jupiter could not be more different. And there are still many things about the Jovian planet that we do not yet fully understand. We have written many interesting articles about the planets of the Solar System here at Universe Today.
Cassini Mission Overview. This illustration depicts the best-known candidates in our search for life in the solar system. Ocean Worlds Infographic. Cassini's path into Saturn's upper atmosphere, with tick marks every 10 seconds. Cassini's path into Saturn's upper atmosphere. See original version of this image here. This sweeping mosaic of Saturn's moon Enceladus provides broad regional context for the ultra-sharp, close-up views NASA's Cassini spacecraft acquired mi Great Southern Land Labeled.
Using data from NASA's Cassini spacecraft, scientists have created the first global topographic map of Saturn's moon Titan, giving researchers a 3-D tool for learning more about one of the most Ear Global Topographic Map of Titan. Color Near Herschel Crater annotated.
Presented here is a complete set of cartographic map sheets from a high-resolution Tethys atlas, a project of the Cassini Imaging Team. The map sheets form a quadrangle series covering the en Militzer'steam found the planet's core is made up of layers of metals and rocks, alongwith methane ice, ammonia ice and water ice.
Above this layer, they suspect an atmosphereof mostly hydrogen and helium. A metallic ball of iron and nickel, just like Earth'score , probably lies at the center of Jupiter's rocky core, they said.
SoJupiter's interior would resemble that of Neptune and Uranus, which appear tohave a rocky core surrounded by icy hydrogen and helium, but without the gasenvelope of Jupiter and Saturn. This is when hydrogen and helium are gases. However, the weight of all this hydrogen and helium is really heavy. This weight presses down toward the planet's core, creating high pressure. The molecules run out of room to bounce around, so instead, they slow down and crowd together.
This creates a liquid. Imagine if you swam to the bottom of the Pacific Ocean. You would feel more than 16, pounds of force pressing down on every square inch of your body. That is approximately the weight of four cars! The pressure at the center of Jupiter is much higher.
At Jupiter's core, you would feel as much as million pounds of pressure pressing down on every square inch of your body.
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