Ganymede's auroras splinter into small, bright patches — structures that mirror features seen in Earth's own auroral displays ...

NASA's spinning spacecraft studying the satellites of the solar system's largest celestial body (aside from the sun), may already be switched off, but the space agency won't say. The Juno probe ...

Ganymede, Jupiter’s largest moon, produces auroras like Earth’s. New data from Juno reveals surprising details about its magnetic field.

NASA’s Juno spacecraft has been orbiting Jupiter since 2016, mapping the planet’s gravity and magnetic fields with extraordinary precision. Instead of finding a dense solid core or no core at all, the ...

Jupiter, the biggest planet in our solar system, is not as big as we thought. For more than half-a-century, astronomers thought they had a good idea of the gas giant's shape and size. Now, a fresh ...

In a landmark observation by a team of international researchers, NASA's Juno spacecraft has, for the first time, clearly detected the auroras of Jupiter's moon Callisto. This discovery completes the ...

PASADENA, Calif. -- Launched by NASA in August 2011, the spacecraft Juno is set to arrive at Jupiter on July 4. Currently cartwheeling through space, once Juno gets close enough to Jupiter, it will ...

After five years of rocketing to Jupiter at 60,000 mph, the fastest object ever created by humans, NASA’s Juno spacecraft, must flawlessly slam on the brakes before its July 4 arrival to the ...

In the four years since NASA’s Juno spacecraft went into orbit around Jupiter, it has slowly been coaxing the king of all the planets to reveal its deepest secrets — an astonishing catalog that ...