Ganymede
Is Ganymede bigger than Earth?
Jupiter’s moon Ganymede is the largest satellite in the solar system. Larger than Mercury and Pluto, and only slightly smaller than Mars, it would easily be classified as a planet if were orbiting the sun rather than Jupiter.
Which is bigger Titan or Ganymede?
Frequently described as a planet-like moon, Titan is 50% larger than Earth’s moon and 80% more massive. It is the second-largest moon in the Solar System after Jupiter’s moon Ganymede, and is larger than the planet Mercury, but only 40% as massive. Titan is primarily composed of ice and rocky material.
Are moons bigger than Earth?
However, not all of the moons are smaller than all of the planets. There are seven moons in our Solar System, including our own Moon, that are larger than Pluto. Jupiter’s moon Ganymede is the largest moon in the Solar System, and Ganymede as well as Saturn’s moon Titan are both larger than Mercury and Pluto.
What is the second largest moon?
Titan
Can you survive on Titan?
How Humans Could Live on Saturn’s Moon Titan (Infographic) Titan, the cloudy moon of Saturn, is one of the least hostile places (for humans) in the outer solar system. It has lakes of liquid methane, and even weather. Titan has no water, but some scientists wonder if life based on methane might live on Titan.
Can humans breathe on Europa?
Europa has a thin oxygen atmosphere, but it is far too tenuous for humans to breathe. From the surface of Europa, Jupiter appears 24 times larger than the moon appears in our sky. Europa’s magnetic field shields its surface from Jupiter’s deadly radiation.
Does Ganymede have life?
Ganymede orbits Jupiter in roughly seven days and is in a 1:2:4 orbital resonance with the moons Europa and Io, respectively. Ganymede is composed of approximately equal amounts of silicate rock and water ice.
Does any planet have water?
Using such methods, many scientists infer that liquid water once covered large areas of Mars and Venus. Water is thought to exist as liquid beneath the surface of some planetary bodies, similar to groundwater on Earth.
Which moon is most habitable?
In the Solar System
| Name | System | Article |
|---|---|---|
| Enceladus | Saturn | Enceladus – potential habitability |
| Titan | Saturn | Life on Titan |
| Callisto | Jupiter | Callisto – potential habitability |
| Ganymede | Jupiter | Ganymede – Subsurface oceans |
5 more rows
Is Jupiter bigger than the moon?
Ganymede exceeds even the planet Mercury in diameter. They are respectively the fourth-, sixth-, first-, and third-largest natural satellites in the Solar System, containing approximately 99.997% of the total mass in orbit around Jupiter, while Jupiter is almost 5,000 times more massive than the Galilean moons.
Does Sun move around Earth?
Earth orbits the Sun at an average distance of 149.60 million km (92.96 million mi), and one complete orbit takes 365.256 days (1 sidereal year), during which time Earth has traveled 940 million km (584 million mi). Earth’s orbit has an eccentricity of 0.0167.
Is Pluto smaller than the Earth’s moon?
With less than 0.2 lunar masses, Pluto is much less massive than the terrestrial planets, and also less massive than seven moons: Ganymede, Titan, Callisto, Io, the Moon, Europa, and Triton. The mass is much less than thought before Charon was discovered.
Was the Death Star based on Mimas?
When seen from certain angles, Mimas resembles the Death Star, a fictional space station and superweapon known from the 1977 film Star Wars. Herschel resembles the concave disc of the Death Star’s “superlaser”.
Is Titan habitable for humans?
Saturn’s largest moon Titan is one of several candidates for possible future colonization of the outer Solar System. According to Cassini data from 2008, Titan has hundreds of times more liquid hydrocarbons than all the known oil and natural gas reserves on Earth.
Is Earth’s moon the biggest?
It is the largest moon in the Solar System relative to the size of its planet, though Charon is larger relative to the dwarf planet Pluto, at 1/9 Pluto’s mass. The Earth and the Moon’s barycentre, their common centre of mass, is located 1,700 km (1,100 mi) (about a quarter of Earth’s radius) beneath Earth’s surface.
Is there life on Europa?
So far, there is no evidence that life exists on Europa, but Europa has emerged as one of the most likely locations in the Solar System for potential habitability. Life could exist in its under-ice ocean, perhaps in an environment similar to Earth’s deep-ocean hydrothermal vents.
Does Titan have seasons?
Seasons. Titan’s orbital tilt with respect to the sun is very close to Saturn’s axial tilt (about 27°), and its axial tilt with respect to its orbit is zero. The day cycle on Titan lasts 15.9 Earth days, which is how long it takes Titan to orbit Saturn.
Can humans breathe on Mars?
See Atmosphere of Mars. The Martian atmosphere is toxic, 95% carbon dioxide, 3% nitrogen, 1.6% argon, and traces of other gases including oxygen totaling less than 0.4%.
Can we live on Jupiter moon Europa?
Europa, the fourth-largest moon of Jupiter, is a subject in both science fiction and scientific speculation for future human colonization. Europa’s geophysical features, including a possible subglacial water ocean, make it a possibility that human life could be sustained on or beneath the surface.
Can humans live on Venus?
Habitability of its atmosphere. Although there is little possibility of existing life near the surface of Venus, the altitudes about 50 km above the surface have a mild temperature, and hence there are still some opinions in favor of such a possibility in the atmosphere of Venus.
Do any other planets have oxygen?
In addition to Earth, many of the other astronomical objects in the Solar System have atmospheres. These include all the gas giants, as well as Mars, Venus, and Pluto. Several moons and other bodies also have atmospheres, as do comets and the Sun. There is evidence that extrasolar planets can have an atmosphere.
Does Kepler 22b have water?
Kepler-22b, dubbed by scientists as a ‘waterworld’, might be an ‘ocean-like’ planet. It might also be comparable to the water-rich planet GJ 1214 b although Kepler-22b, unlike GJ 1214 b, is in the habitable zone.
Is there a planet with only water?
Earth is the only astronomical object known to have bodies of liquid water on its surface, although several exoplanets have been found with the right conditions to support liquid water.
How many planets in the universe can support life?
Average number of planets that might support life per star that has planets, ne. In November 2013, astronomers reported, based on Kepler space mission data, that there could be as many as 40 billion Earth-sized planets orbiting in the habitable zones of sun-like stars and red dwarf stars within the Milky Way Galaxy.
Can life support Mars?
The confirmation that liquid water once flowed on Mars, the existence of nutrients, and the previous discovery of a past magnetic field that protected the planet from cosmic and solar radiation, together strongly suggest that Mars could have had the environmental factors to support life.
Which planets can support life?
On 4 November 2013, astronomers reported, based on Kepler space mission data, that there could be as many as 40 billion Earth-sized planets orbiting in the habitable zones of Sun-like stars and red dwarfs within the Milky Way.
Is Saturn’s moon Titan habitable?
Whether there is life on Titan, the largest moon of Saturn, is at present an open question and a topic of scientific assessment and research. Titan is far colder than Earth, and its surface lacks stable liquid water, factors which have led some scientists to consider life there unlikely.
Photo in the article by “Geograph” https://www.geograph.org.uk/photo/5066715