the satellites of jupiter io: the volcanic moon of jupiter
TRANSCRIPT
![Page 1: The satellites of Jupiter Io: the volcanic moon of Jupiter](https://reader036.vdocuments.mx/reader036/viewer/2022062305/56649e1a5503460f94b07370/html5/thumbnails/1.jpg)
The satellites of Jupiter
Io: the volcanic moon of Jupiter
![Page 2: The satellites of Jupiter Io: the volcanic moon of Jupiter](https://reader036.vdocuments.mx/reader036/viewer/2022062305/56649e1a5503460f94b07370/html5/thumbnails/2.jpg)
Galilean moons
The Galilean moons are the four moons of Jupiter discovered by Galileo Galilei in January 1610. They are the largest of the many moons of Jupiter and derive their names from the lovers of Zeus: Io, Europa, Ganymede, and Callisto.
They are among the most massive objects in the Solar System outside the Sun and the eight planets.
![Page 3: The satellites of Jupiter Io: the volcanic moon of Jupiter](https://reader036.vdocuments.mx/reader036/viewer/2022062305/56649e1a5503460f94b07370/html5/thumbnails/3.jpg)
The four moons were discovered when Galileo
made improvements to his telescope, which enabled him to observe celestial
bodies more distinctly than had ever been possible
before.
![Page 4: The satellites of Jupiter Io: the volcanic moon of Jupiter](https://reader036.vdocuments.mx/reader036/viewer/2022062305/56649e1a5503460f94b07370/html5/thumbnails/4.jpg)
Galileo initially named his discovery the Cosmica
Sidera ("Cosimo's stars“ to honor Cosimo De Medici, lord of Florence), but the
names that eventually prevailed were chosen by
Simon Marius.
Galileo describes the moons of Jupiter in his most
important astronomical treatise: the “Sidereus
Nuncius”.
![Page 5: The satellites of Jupiter Io: the volcanic moon of Jupiter](https://reader036.vdocuments.mx/reader036/viewer/2022062305/56649e1a5503460f94b07370/html5/thumbnails/5.jpg)
While watching the sky in January 1610 he noticed three little “stars” near Jupiter and he
thought they belonged to the fixed stars. But in the following days he observed that they changed
their position and he deduced that they revolved around Jupiter, so they were its satellites.
![Page 6: The satellites of Jupiter Io: the volcanic moon of Jupiter](https://reader036.vdocuments.mx/reader036/viewer/2022062305/56649e1a5503460f94b07370/html5/thumbnails/6.jpg)
Our observations
Since our school has an astronomical
observatory we could repeat Galilean observation.
Using the telescope we saw one of the
satellites of Jupiter, Io.
![Page 7: The satellites of Jupiter Io: the volcanic moon of Jupiter](https://reader036.vdocuments.mx/reader036/viewer/2022062305/56649e1a5503460f94b07370/html5/thumbnails/7.jpg)
Io
Io is the innermost of the four Galilean moons of Jupiter and, with its diameter of 3,642 kilometers,
the fourth-largest moon in the Solar System. It was named after Io, a priestess of Hera who became
one of the lovers of Zeus.
![Page 8: The satellites of Jupiter Io: the volcanic moon of Jupiter](https://reader036.vdocuments.mx/reader036/viewer/2022062305/56649e1a5503460f94b07370/html5/thumbnails/8.jpg)
Characteristics of Io Io orbits Jupiter at a distance of 421,700 km
from the planet's center and 350,000 km from its cloudtops. It takes 42.5 hours to complete one orbit (fast enough for its
motion to be observed over a single night of observation).
![Page 9: The satellites of Jupiter Io: the volcanic moon of Jupiter](https://reader036.vdocuments.mx/reader036/viewer/2022062305/56649e1a5503460f94b07370/html5/thumbnails/9.jpg)
Like the other Galilean satellites of Jupiter and the
Earth's Moon, Io rotates synchronously with its
orbital period, keeping one face clearly pointed towards
Jupiter.
Io's colours derive from sulphur and molten silicate rock. Its unusual surface is
kept very young by its system of more than 100
active volcanoes, the biggest one is called Pele.
![Page 10: The satellites of Jupiter Io: the volcanic moon of Jupiter](https://reader036.vdocuments.mx/reader036/viewer/2022062305/56649e1a5503460f94b07370/html5/thumbnails/10.jpg)
On the 5th April 2013, Io passed in front of
Jupiter and we could observe it.
Unfortunately at the beginning of the
observation the sky was cloudy so we couldn’t
see clearly the transit of Io.
![Page 11: The satellites of Jupiter Io: the volcanic moon of Jupiter](https://reader036.vdocuments.mx/reader036/viewer/2022062305/56649e1a5503460f94b07370/html5/thumbnails/11.jpg)
An amateur astronomer in Caserta sent us some photos because there the weather
was better.
Open Photo
![Page 12: The satellites of Jupiter Io: the volcanic moon of Jupiter](https://reader036.vdocuments.mx/reader036/viewer/2022062305/56649e1a5503460f94b07370/html5/thumbnails/12.jpg)
Around 10.30 p.m. the sky cleared up and so we could take some video of Jupiter and Io. Then
using a software named Registax which processes the frames to the best possible
picture we obtained these photos.
![Page 13: The satellites of Jupiter Io: the volcanic moon of Jupiter](https://reader036.vdocuments.mx/reader036/viewer/2022062305/56649e1a5503460f94b07370/html5/thumbnails/13.jpg)
![Page 14: The satellites of Jupiter Io: the volcanic moon of Jupiter](https://reader036.vdocuments.mx/reader036/viewer/2022062305/56649e1a5503460f94b07370/html5/thumbnails/14.jpg)
![Page 15: The satellites of Jupiter Io: the volcanic moon of Jupiter](https://reader036.vdocuments.mx/reader036/viewer/2022062305/56649e1a5503460f94b07370/html5/thumbnails/15.jpg)
![Page 16: The satellites of Jupiter Io: the volcanic moon of Jupiter](https://reader036.vdocuments.mx/reader036/viewer/2022062305/56649e1a5503460f94b07370/html5/thumbnails/16.jpg)
![Page 17: The satellites of Jupiter Io: the volcanic moon of Jupiter](https://reader036.vdocuments.mx/reader036/viewer/2022062305/56649e1a5503460f94b07370/html5/thumbnails/17.jpg)
![Page 18: The satellites of Jupiter Io: the volcanic moon of Jupiter](https://reader036.vdocuments.mx/reader036/viewer/2022062305/56649e1a5503460f94b07370/html5/thumbnails/18.jpg)
Thanks for your attention!
Work by:
Brignone Lorenzo, Gianti Alessandro, Rinaudo Anna, Viale Luca, Viara Francesco
Thanks to:
Paolo Demaria, Ascanio Trivisano