When it comes to evolutionary biology and life on other planets, there is talk of amino acids, the building blocks of our existence.
But for any of that to work we first needed magnetic fields and plate tectonics, and a new paper finds that Earth became a "Goldilocks planet" by getting to the right place at the right time. So if we want to find other forms of life, we need to look for exoplanets that developed earlier rather than later.
Exoplanets are planets orbiting stars in other solars around distant stars and with thousands now known, there is a lot of speculation about how to detect life. It will start with narrowing down the possibilities; position, temperature, and geochemistry.