Juno probe enters into orbit around
Jul 18, 2016
After a five-year journey, the US space agency's Juno probe nears Jupiter before its perilous attempt to go into orbit.No previous spacecraft has dared pass so close to Jupiter; its intense radiation belts can destroy unprotected electronics.
- Scientists plan to use the spacecraft to sense the planet's deep interior. They think the structure and the chemistry of its insides hold clues to how this giant world formed some four-and-a-half-billion years ago.Juno and what scientific community will gain from this
Juno will improve our understanding of the solar system's beginnings by revealing the origin and evolution of Jupiter.
- It will determine how much water is in Jupiter's atmosphere, which helps determine which planet formation theory is correct (or if new theories are needed)
- It will look deep into Jupiter's atmosphere to measure composition, temperature, cloud motions and other properties
- It will Map Jupiter's magnetic and gravity fields, revealing the planet's deep structure
- It will Explore and study Jupiter's magnetosphere near the planet's poles, especially the auroras – Jupiter's northern and southern lights – providing new insights about how the planet's enormous magnetic force field affects its atmosphere.
- Juno's principal goal is to understand the origin and evolution of Jupiter. Underneath its dense cloud cover, Jupiter safeguards secrets to the fundamental processes and conditions that governed our solar system during its formation. As our primary example of a giant planet, Jupiter can also provide critical knowledge for understanding the planetary systems being discovered around other stars.
- Probing magnetosphere of Jupiter:Deep in Jupiter's atmosphere, under great pressure, hydrogen gas is squeezed into a fluid known as metallic hydrogen. At these great depths, the hydrogen acts like an electrically conducting metal which is believed to be the source of the planet's intense magnetic field. This powerful magnetic environment creates the brightest auroras in our solar system, as charged particles precipitate down into the planet's atmosphere. Juno will directly sample the charged particles and magnetic fields near Jupiter's poles for the first time, while simultaneously observing the auroras in ultraviolet light produced by the extraordinary amounts of energy crashing into the polar regions. These investigations will greatly improve our understanding of this remarkable phenomenon, and also of similar magnetic objects, like young stars with their own planetary systems.
What is special about Juno Probe:
- Juno probe is the most distant solar-powered probe from the earth. According to NASA, Jupiter receives only 1/25th of the sunlight we receive here on Earth.
- Since Juno is traveling in and out of the strongest radiation belts and magnetic fields outside of the sun, the probe carry its electronics in a titanium vault to protect the most sensitive among them from the ravages of Jovian orbital space.
- Jupiter is the largest planet in the solar system.
- It is approximately 143,000 kilometers (about 89,000 miles) wide at its equator.
- Jupiter is so large that all of the other planets in the solar system could fit inside it. More than 1,000 Earths would fit inside Jupiter.
- Jupiter is a giant gas planet. Its atmosphere is made up of mostly hydrogen gas and helium gas, just like the sun.
- The planet's surface is covered in thick red, brown, yellow and white clouds.
- One of Jupiter's most famous features is the Great Red Spot. It is a giant spinning storm, resembling a hurricane. At its widest point, the storm is about three-and-a-half times the diameter of Earth. Jupiter is a very windy planet. Winds range from 192 mph to more than 400 m
- Jupiter rotates, or spins, faster than any other planet. One rotation equals one day.
- Jupiter's day is only about 10 hours long. Jupiter's orbit is elliptical, or oval-shaped. It takes 12 Earth years for Jupiter to make one revolution around the sun, so a year on Jupiter is equal to 12 years on Earth.
- Jupiter has 62 known moons.
- The largest of Jupiter's moons is Ganymede. It is the largest moon in the solar system. Ganymede is larger than the planet Mercury and three-fourths the size of Mars. Ganymede is the only moon in the solar system known to have its own magnetic field. Ganymede and Callisto have many craters and appear to be made of ice and rocky m