An atmospheric haze around a faraway planet—like the one which probably shrouded and cooled the young Earth—could show that the world is potentially habitable, or even be a sign of life itself.
UCLA geochemists have found evidence that life likely existed on Earth at least 4.1 billion years ago—300 million years earlier than previous research suggested. The discovery indicates that life may have begun shortly ...
Stanford scientists have discovered a surprising source for an organic molecule used as an indicator for life on early Earth.
In its early life, Earth suffered a meteorite pummelling that lasted 100 million years and may have changed its chemical makeup forever, researchers said Wednesday.
Early Earth was an inhospitable place where the planet was often bombarded by comets and other large astrophysical bodies.
Anyone who's ever noticed a water puddle drying in the sun has seen an environment that may have driven the type of chemical reactions that scientists believe were critical to the formation of life on the early Earth.
A new view of the Moon's formation: Crucial difference in 'fingerprints' confirms explosive, interconnected past
Within the first 150 million years after our solar system formed, a giant body roughly the size of Mars struck and merged with Earth, blasting a huge cloud of rock and debris into space. This cloud would eventually coalesce ...
A spark from a lightning bolt, interstellar dust, or a subsea volcano could have triggered the very first life on Earth. But what happened next? Life can exist without oxygen, but without plentiful nitrogen to build genes ...
"Why would NASA want to study a lake in Canada?"
Our young sun may have routinely blasted Earth with gobs of energy more powerful than any similar bombardments recorded in human history.