From the dawn of recorded history, comets have been viewed as the bringers of everything from gloom and doom to water and life. In reality, comets are a sample of material which was present in the cloud of gas and dust which condensed to form our Sun and its planetary system. Until recently a comet's nucleus has remained a mystery enveloped in a veil of gas and dust.
Published on 5 years, 9 months ago
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