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NGC 3242 (also known as the Ghost of Jupiter, Eye Nebula or Caldwell 59) is a planetary nebula located in the constellation Hydra.. William Herschel discovered the nebula on February 7, 1785, and catalogued it as H IV.27.
Ghost of Jupiter: NGC 3242: 1785 4.8 8.6 Hydra: Blinking Planetary: NGC 6826: Caldwell 15 2.0 8.8 Cygnus: Dumbbell Nebula: M27: ... Eye of Sauron Nebula M 1-42: 10 14 ...
This enhances the mass of planetesimals fourfold. However, the minimum mass nebula capable of terrestrial planet formation can only form 1–2 M E cores at the distance of Jupiter (5 AU) within 10 million years. [65] The latter number represents the average lifetime of gaseous disks around Sun-like stars. [17]
Jupiter is the fifth planet from the Sun and the largest in the Solar System. ... Therefore, the planet must have formed before the solar nebula was fully dispersed. [27]
[72] [73] However, it is unclear whether conditions in the solar nebula would have allowed Jupiter and Saturn to move back to their current positions, and according to current estimates this possibility appears unlikely. [74] Moreover, alternative explanations for the small mass of Mars exist. [75] [76] [77]
NGC 3242 is a planetary nebula of magnitude 7.5, 1400 light-years from Earth. [12] Discovered in 1785 by William Herschel, it has earned the nickname "Ghost of Jupiter" because of its striking resemblance to the giant planet. [13] Its blue-green disk is visible in small telescopes and its halo is visible in larger instruments. [1]
As night falls, Jupiter will rise in the east-northeast, among the stars that make up the constellation of Taurus, according to NASA. Around Dec. 14, Jupiter will be visible in the night sky ...
Eye of Jupiter may refer to: "The Eye of Jupiter" (Battlestar Galactica), ... NGC 3242 or Eye of Jupiter Nebula, a nebula; Great Red Spot of the planet Jupiter