afarensis lived between 3.7 and three million years ago.

northeastern Africa

2 million years ago

Eastern Africa

The earliest known life-forms are putative fossilized microorganisms, found in hydrothermal vent precipitates, that may have lived as early as 4.28 Gya (billion years ago), relatively soon after the oceans formed 4.41 Gya, and not long after the formation of the Earth 4.54 Gya.

The Universe as we observe it today began with the hot Big Bang: an early hot, dense, uniform. Perhaps, according to cosmic inflation — our leading theory of the Universe’s pre-Big Bang origins — it really did come from nothing.

A creator deity or creator god (often called the Creator) is a deity or god responsible for the creation of the Earth, world, and universe in human religion and mythology. In monotheism, the single God is often also the creator.

There is no such thing as nothingness, and zero does not exist. Everything is something. Nothing is nothing.

The initial singularity is a singularity predicted by some models of the Big Bang theory to have existed before the Big Bang and thought to have contained all the energy and spacetime of the Universe.

Pre-existence, preexistence, beforelife, or premortal existence is the belief that each individual human soul existed before mortal conception, and at some point before birth enters or is placed into the body.

Particles from empty space Quantum mechanics tells us that there is no such thing as empty space. Even the most perfect vacuum is actually filled by a roiling cloud of particles and antiparticles, which flare into existence and almost instantaneously fade back into nothingness.

If the Universe holds enough matter, including dark matter, the combined gravitational attraction of everything will gradually halt this expansion and precipitate the ultimate collapse. Over time, galaxies, then individual stars, will smash into each other more frequently, killing off any life on nearby planets.

Atoms are not mostly empty space because there is no such thing as purely empty space. Atoms are filled with electrons. It’s true that a large percentage of the atom’s mass is concentrated in its tiny nucleus, but that does not imply that the rest of the atom is empty.

The word vacuum comes from Latin ‘an empty space, void’, noun use of neuter of vacuus, meaning “empty”, related to vacare, meaning “to be empty”.

quarks

A Planck length is 1.6 x 10^-35 meters (the number 16 preceded by 34 zeroes and a decimal point) — an incomprehensibly small scale that is implicated in various aspects of physics.