Possessing a metallic core, it has the lowest moment of inertia factor of any solid body in the Solar System and is the only moon known to have a magnetic field. Outward from Jupiter, it is the seventh satellite and the third of the Galilean moons, the first group of objects discovered orbiting another planet.
Which moon has a magnetic field?
While the moon has no magnetic field of note today, recent evidence from rock samples brought back by the Apollo missions show that between 4.2 and 3.4 billion years ago, when the moon was more than twice as close to Earth as it is now, it did have a magnetic field that was at least as strong as Earth’s present …
Which of Jupiter’s moons has a magnetic field?
Why does the moon have no magnetic field?
The researchers think this happens because the moon’s core and its mantle rotate around slightly different axes, and the boundary between them is not quite spherical, so their relative motion causes the fluid to mix around. … This model would explain why the moon used to have a magnetic field, but no longer does.
Does the moon Titan have a magnetic field?
Titan has no magnetic field, although studies in 2008 showed that Titan retains remnants of Saturn’s magnetic field on the brief occasions when it passes outside Saturn’s magnetosphere and is directly exposed to the solar wind. This may ionize and carry away some molecules from the top of the atmosphere.
How do magnets behave in space?
Unlike a lot of other items you might bring to space that need additional tools or equipment to function, a magnet will work without any extra help. Magnets don’t need gravity or air. Instead, their power comes from the electromagnetic field they generate all by themselves.
Would a magnet work on the moon?
On Earth, a compass needle points to the North Magnetic pole. But on the Moon, Mr. Dietrich said, ”there is no magnetic field that would be detectable by your average Earth compass. ”
Can we breathe on Ganymede?
In 1996, astronomers using the Hubble Space Telescope found evidence of a thin oxygen atmosphere. However, it is too thin to support life as we know it; it is unlikely that any living organisms inhabit Ganymede. … Ganymede’s magnetosphere is entirely embedded within the magnetosphere of Jupiter.
What are the 4 Galilean moons?
A comparison “portrait” of Jupiter’s four Galilean moons Io, Europa, Gany- mede, and Callisto, each with different characteristics. (In this image composite, Jupiter is not at the same scale as the satellites.)
Are any moons bigger than Earth?
Titan is bigger than Earth’s moon, and larger than even the planet Mercury. This mammoth moon is the only moon in the solar system with a dense atmosphere, and it’s the only world besides Earth that has standing bodies of liquid, including rivers, lakes and seas, on its surface.
How does a magnetic field affect humans?
The Earth’s magnetic field does not directly affect human health. Humans evolved to live on this planet. High-altitude pilots and astronauts can experience higher levels of radiation during magnetic storms, but the hazard is due to the radiation, not the magnetic field itself.
Does Moon have core?
Uncovering details about the lunar core is critical for developing accurate models of the moon’s formation. … The team’s findings suggest the moon possesses a solid, iron-rich inner core with a radius of nearly 150 miles and a fluid, primarily liquid-iron outer core with a radius of roughly 205 miles.
Is there a magnetic field on Earth?
The magnetic field of Earth is caused by currents of electricity that flow in the molten core. These currents are hundreds of miles wide and flow at thousands of miles per hour as the earth rotates. The powerful magnetic field passes out through the core of the earth, passes through the crust and enters space.
Can we breathe on Titan?
So Titan is a remarkable, and very Earth-like, world. … It is cold on Titan (surface temperature of about -290 degrees F). And people would need to wear respirators to breathe oxygen, since the atmosphere is mostly nitrogen.
Is Titan bigger than Earth?
Titan is the largest of Saturn’s 62 moons and the second largest moon in the solar system after Jupiter’s Ganymede. … The radius of Titan is about 1,600 miles making it smaller than half the size of Earth (3,963 miles) but larger than the Earth’s moon (1,079.6 miles).
How cold is it on Titan?
Although it moves in latitude, the maximum measured temperature on Titan remains around -292 degrees Fahrenheit (-179.6 degrees Celsius, 93.6 Kelvin), with a minimum temperature at the winter pole only 6 degrees Fahrenheit (3.5 degrees Celsius or Kelvin) colder.