Fri. May 14th, 2021
Credits: NASA, ESA, STScI, A. Simon (Goddard Space Flight Center), M.H. Wong (University of California, Berkeley), and the OPAL team
Credits: NASA, ESA, STScI, A. Simon , M.H. Wong, and the OPAL team

Jupiter

Jupiter is composed of hydrogen and a quarter of helium. It is the largest planet in the solar system and has a diameter of 142,984 km. The average density of Jupiter is 1.326 g/cm3 . The Jupiter clouds are composed of ammonia crystals. We all know the famous Great Red Spot on Jupiter, it is a anticyclonic storm which larger Earth.

The latest image of the Jupiter captured by the Hubble Telescope on 25th August 2020 clearly shows a bright, white stretched out storm running around the planet at a speed of 560 kilometres per hour. There is a significant decrease in the size of the spot over the year since its discovery.

This latest image of Jupiter, taken by NASA’s Hubble Space Telescope on Aug. 25, 2020, was captured when the planet was 406 million miles from Earth. Credits: NASA, ESA, STScI, A. Simon (Goddard Space Flight Center), M.H. Wong (University of California, Berkeley), and the OPAL team.
Latest image of Jupiter, taken by NASA’s Hubble Space Telescope on Aug. 25, 2020 Credits: NASA, ESA, STScI, A. Simon, M.H. Wong , and the OPAL team.

According to the late 1800s the approximate size of the spot was 41,000 km and by 2015 the storm measures approximately 16,500 km and is decreasing about 930 km per year. According to researchers the Great Red Spot now measures about 15,771 km, it is so enormous that three Earths could fit in it. The storm is downsizing but the reason behind it is a real mystery.

Europa

On the left you can see the moon Europa. Europa is sixth largest moon and it is fifteenth largest object in our solar system. It is made of silicate rock and icy crust. The surface temperature at equator is -160o C and at the poles it is -220o C. Europa is smaller than Earth’s moon and has a thin atmosphere which is composed of oxygen. While the surface of Europa is smooth and solid, the surface of Earths Moon is bumpy. The Hubble Telescope also detected aqueous vapor on Europa.

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