These are organized by a classification scheme developed exclusively for Cosma. More…
Jupiter : the largest of the planets and fifth in order from the sun — Webster
Jupiter is the fifth planet from the Sun and the largest in the Solar System. It is a giant planet with a mass one-thousandth that of the Sun, but two and a half times that of all the other planets in the Solar System combined. Jupiter is a gas giant, along with Saturn, with the other two giant planets, Uranus and Neptune, being ice giants. Jupiter was known to astronomers of ancient times. The Romans named it after their god Jupiter.
Jupiter is primarily composed of hydrogen with a quarter of its mass being helium, though helium comprises only about a tenth of the number of molecules. It may also have a rocky core of heavier elements, but like the other giant planets, Jupiter lacks a well-defined solid surface. Because of its rapid rotation, the planet’s shape is that of an oblate spheroid (it has a slight but noticeable bulge around the equator). The outer atmosphere is visibly segregated into several bands at different latitudes, resulting in turbulence and storms along their interacting boundaries. A prominent result is the Great Red Spot, a giant storm that is known to have existed since at least the 17th century when it was first seen by telescope. Surrounding Jupiter is a faint planetary ring system and a powerful magnetosphere. Jupiter has at least 67 moons, including the four large Galilean moons discovered by Galileo Galilei in 1610. Ganymede, the largest of these, has a diameter greater than that of the planet Mercury. — Wikipedia
Jupiter News -- ScienceDaily Jupiter Research. From Hubble's latest pictures of Jupiter's new red spot to astronomy articles on Jupiter's moons, learn all the Jupiter facts here.
New limit on the definition of a planet proposed
on January 23, 2018 at 3:19 pm
A planet can be no bigger than about 10 times the size of Jupiter, an astrophysicist has calculated. […]
A 'hot Jupiter' with unusual winds
on January 22, 2018 at 4:09 pm
The hottest point on a gaseous planet near a distant star isn't where astrophysicists expected it to be -- a discovery that challenges scientists' understanding of the many planets of this type found in solar systems outside our own. […]
Planets around other stars are like peas in a pod
on January 9, 2018 at 7:19 pm
A study of 909 planets and 355 stars reveals that, unlike our solar system, other planetary systems are distinguished by strict regularity. […]
NASA solves how a Jupiter jet stream shifts into...
on December 19, 2017 at 2:13 pm
Speeding through the atmosphere high above Jupiter's equator is an east-west jet stream that reverses course on a schedule almost as predictable as a Tokyo train's. Now, a research team has identified which type of wave forces this jet to change direction. […]
Giant storms cause palpitations in Saturn's...
on December 13, 2017 at 5:00 pm
Immense northern storms on Saturn can disturb atmospheric patterns at the planet's equator, finds the international Cassini mission. […]