Newly discovered twin planets could solve puffy planet mystery --- Since astronomers first measured the size of an extrasolar planet seventeen years ago, they have struggled to answer the question: how did the largest planets get to be so large? Thanks to the recent discovery of twin planets by a University of Hawaii Institute for Astronomy team lead by graduate student Samuel Grunblatt, we are getting closer to an answer.
Have you ever seen the Southern or Northern Lights? Earth isn't the only planet that puts on these beautiful light shows, which are also called the "aurora". Aurora have been seen at both poles of Saturn, too, as well as at the poles of Jupiter.
Jupiter is probably the best place in the solar system to study how the magnetic fields of planets are generated. The Juno spacecraft will arrive at the Jovian system in July then circle the planet and collect data for more than one Earth year.
OMG Space - Gorgeous Art Infographics of Space Objects by Margot Trudell
15 Things You Don't Know About Outer Space (Infographic). The Saturn one is not strictly true, even if there were a water body large enough for a planet to float in. Let's just say that Saturn's overall density is less than that of liquid water on Earth.