The Universe is 13.8 billion years old, Our Milky Way Galaxy, 13.2, our Sun, 4.6, Earth, 4.5 billion years old.
The Universe is three times older than Earth, over 9 billion years. Yet life on Earth emerged just a few hundred million years after it formed.
The odds of life first appearing on Earth is well, astronomical.
Space rocks jump from planet to planet all the time, sometimes carrying information required to spawn new life.
For life to exist as we know it, there must be an ocean and a source of energy, no sun required. Deep in the Earth’s oceans, where there is no sun, hot vents provide the energy for life.
So, find an ocean, with hot vents, find life, Simple. Notice we are building on assumptions here, but still, hypotheses must start somewhere. We must then iterate to test them.
So where are these oceans?
The NASA’s Galileo spacecraft detected the first alien ocean on Jupiter’s moon Europa.
Europa appears to be like an egg, with a hard shell on the surface, and a salty egg white ocean surrounding a solid egg yolk, a world waiting to hatch…
Earth might have a similar history. 650 million years ago, Earth was covered in ice, Snowball Earth.
There are signs of past oceans on the planets Venus and Mars. Venus, closer to the sun, boiled it’s oceans off the surface. Mars, with no magnetic field, and low gravity, lost its oceans into space.
NASA’s Cassini spacecraft, in 2008, would be the first to taste an alien ocean on Saturn’s 500 Kilometer diameter moon Enceladus. What did it taste like? It was like an organic brew of carbonated water with natural gas.
By the way, on Earth, natural gas is considered to be fossil fuel derived from the decay of ancient plants and animals.
Other ocean worlds appear to exist on Jupiter’s moons Ganymede and Callisto. There also appears to be ocean worlds everywhere from Ceres in the nearby asteroid belt between Mars and Jupiter to Pluto in the Kuiper belt.
Even Saturn’s moon Titan, with all it’s energy-rich surface hydrocarbon oceans, is showing signs of a subsurface salt water ocean. Is it some physical process? Or, is ancient life just spewing methane to the surface?
Thousands of exoplanets have been discovered to be in the Goldilocks Zone, where liquid oceans can exist.
There’s appears to be water all over the Universe. How do we seek out these new worlds?
Fortunately, it would appear that if we want to find new life, we don’t have to leave the solar system. We just need to build a space highway, and create deep space drones to find it.
Lets Google the solar system.
Thank you for reading.