Kepler-452b is sometimes called 'Earth 2.0', but there's a lot we still don't know about it.
Is there another Earth out there? Certainly, there are a few contenders
When Kepler was at the very height of his scientific career, his mother was accused of witchcraft.
Kepler-452b's discovery last week has raised the perennial question: are we alone in the universe? While the find's scientific import is huge, it also poses questions that go to the heart of religion.