Enceladus has all the elements that life needs.

At 2 a.m. Beijing time, NASA held a news conference at the James Webb Auditorium at its headquarters in Washington, D.C., to announce that Enceladus has all the elements needed for life, and that Europa, which is in a similar situation, has the same potential.
the two satellites are very much akin: the outside is covered with thick ice, which hides a flowing ocean.
previously, scientists thought the oceans beneath the ice layers of Canon and Titan might be the most likely places in the solar system to have extratermine life.
particularly notable is the presence of jet plumes in the ice cracks of both satellites - meaning that scientists do not need to drill through the ice to understand the mysterious deep sea beneath the ice by simply analyzing the composition of the ejected plume.
, NASA announced that the Saturn probe Cassini had sampled the jet plume as it flew past Titan in October 2015.
relying on its own ion and neutrogen mass spectrometers, Cassini found hydrogen and carbon dioxide in the jet plume, which is still considerable.
in an April 14 paper published in the journal Science, scientists say the "most convincing" explanation for the presence of hydrogen and carbon dioxide is that it is caused by a hydrothermal reaction between warm oceans under ice and rock formations under the sea.
hydrothermal reaction can provide energy for deep-sea microorganisms.
is that hydrogen and carbon dioxide can be synthesized into methane.
in the Earth's undersea hot springs, scientists have shown that methane can also feed microorganisms near the Earth's undersea hot springs, creating a unique hot spring ecosystem where the sun is not shining.
, Titan has almost all the elements needed for life.
, organic matter, and now even energy sources," said Hunter Waite of the Southwest Institute, one of the authors of the paper.
that although the sulfur and phosphorus needed for life have not yet been discovered, this does not affect Titan's rise to become the most likely place in the solar system for extraterresterionally life.
" Although there is no direct evidence of extraterrotive life, David Rothery, a professor at the Open University of the United Kingdom, said, "If there are two places in the solar system that can evolve life independently, then we will have a great increase in confidence in finding extraterrotive life in the vast universe."
" Titan and Cassini Saturn are the second largest planets in the solar system, from the telescope, Saturn is surrounded by a wide circle of "cap edge", very recognizable.
this beautiful aura is actually made up of seven rings from A to G, and the seams between the rings and the rings, the main components of which are gravel and ice, and looks like a huge dense record.
saturn has been identified as many as 62 moons, the more famous of which are the largest Titan and the sixth largest, Enceladus, where scientists believe extraterrestary may exist.
the Cassini spacecraft, launched in 1997, has run out of fuel.
cassini has conducted an unprecedented in-depth survey of the planet and its magnificent aperture since it reached Saturn's orbit in 2004, returning countless valuable data and images to scientists.
it has found a rickety global ocean hidden under Titan's thick ice crust, found a variety of complex organic matter in Titan's outer atmosphere, and found that Titan's atmosphere is rich in oxygen.
Cassini, which has been in service for 20 years, gets out of control once the fuel falls below a certain level.
To avoid a collision between Cassini and moons that may have life cues, NASA has arranged a gorgeous curtain-up for Cassini: starting in April, Cassini will gradually de-orbit, making its first flight into an unknown gap between Saturn and its rings, making 22 round trips, eventually crashing into Saturn's atmosphere on September 15th, completing self-immolation.
the last mission set by humans, Cassini will continue to send precious data back to Earth until the signal disappears.
telescopes Jupiter are the largest planets in the solar system, with 67 known moons.
among them, Ganymede, Ganymede and Callisto, discovered by Italian scientist Galileo in 1610, are known as galileo satellites.
Europa is made up of silicate rocks and is covered with ice.
hubble telescope has found that Umbra has a thin atmosphere of oxygen and has captured images of plumes that may have been formed by water vapor eruptions.
NASA will launch the Europa Express after 2020 to take close-up observations of Europa through orbiting probes, and may even send a lander to its surface to focus on the oceans hidden beneath the ice.
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