Whether you happen to be walking down a neighborhood street on a starry night, or trekking across Canada in a car, or rising to the bright sunshine that beams through your bedroom window in the morning, many of us easily take it for granted, or perhaps it simply goes unnoticed that we are, human beings living on a planet called Earth; or that the beautiful stars in the sky have existed long before we did; or that our planet is but a tiny speck of sand in the grand Universe. "Where did it all come from?" many people before us have asked themselves. Scientists of Cosmology, who study larg…
