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Tag Archives: Jupiter

How many moons does Jupiter have?

Urban Astronomer avatarPosted on 23 May, 2012 by Allen Versfeld13 Feb, 2023

Current total: 79. I’ll keep updating this page as more get discovered. Details in the UPDATES section below As of 2 February 2012, we know of 67 moons around Jupiter.  We will probably continue to find more and more, as we keep looking, since Jupiter is large enough that it constantly captures passing asteroids and comets, turning them into moons.  The smallest ones are so hard to see, and have such big irregular orbits, that astronomers sometimes lose them, until … Continue reading →

Posted in Astronomy, Questions and Answers, Short Questions | Tagged Jupiter, Planet, Q&A | Leave a reply

What does Jupiter weigh?

Urban Astronomer avatarPosted on 13 Mar, 2012 by Allen Versfeld28 Jan, 2017

Jupiter has a mass of about 1.9 x 1027kg – 1900 trillion Trillion kilogrammes.  That’s more than double all the other planets, asteroids, comets and dust of the entire Solar System put together.  Jupiter is BIG, yet still manages to not weigh anything at all.  How?  Because it is in orbit around the Sun, just like an astronaut orbits the Earth, and so experiences zero gravity.  That’s not to say there is no gravity around Jupiter – it has plenty gravity … Continue reading →

Posted in Astronomy, Questions and Answers, Short Questions | Tagged Jupiter, Planet, Q&A, Solar System | 2 Replies
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