In Depth | Ganymede – NASA Solar System Exploration
Jupiter’s moon Ganymede is proving to be a fascinating world. Not only is it the largest moon in our solar system, bigger than the planet Mercury and the dwarf planet Pluto, but NASA’s Hubble Space …
Jupiter - NASA Solar System Exploration
Sep 3, 2025 · Facts About Jupiter Jupiter is the largest and oldest planet in our solar system. If Jupiter was a hollow shell, 1,000 Earths could fit inside. But the "King of Planets" is no lumbering giant — …
Planet Compare - NASA Solar System Exploration
Oct 21, 2025 · NASA’s real-time science encyclopedia of deep space exploration. Our scientists and far-ranging robots explore the wild frontiers of our solar system.
In Depth | Amalthea – NASA Solar System Exploration
This may be because, as it orbits within Jupiter's powerful magnetic field, electric currents are included in the moon's core. Alternatively, the heat could be from tidal stresses.
In Depth | Our Solar System – NASA Solar System Exploration
Our solar system consists of our star, the Sun, and everything bound to it by gravity – the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune; dwarf planets such as Pluto; …
In Depth | Europa – NASA Solar System Exploration
The reduced density at greater distances is likely due to temperature: denser, rocky, and metal material condenses out first, close to Jupiter or the Sun, while lighter-weight icy material only condenses out …
In Depth | Earth's Moon – NASA Solar System Exploration
The temperature on the Moon reaches about 260 degrees Fahrenheit (127 degrees Celsius) when in full Sun, but in darkness, the temperatures plummet to about -280 degrees Fahrenheit (-173 degrees …
In Depth | Titan – NASA Solar System Exploration
The surface of Titan is one of the most Earthlike places in the solar system, albeit at vastly colder temperatures and with different chemistry. Here it is so cold (-290 degrees Fahrenheit or -179 …
In Depth | Sun – NASA Solar System Exploration
It's about 250 miles thick, with temperatures reaching about 10,000 degrees Fahrenheit (5,500 degrees Celsius). That's much cooler than the blazing core, but it's still hot enough to make carbon – like …
Europa By the Numbers – NASA Solar System Exploration
May 16, 2024 · Europa is one of the largest of Jupiter’s more than 90 moons. It's the sixth-closest moon to the planet.