: By studying the comet’s gas and dust, scientists learned that comets are "primitive building blocks" that may have delivered water or even the ingredients for life to early Earth.
: In November 2014, Rosetta became the first spacecraft to orbit a comet and deploy a lander, named Philae , onto its surface. Rosetta
The Rosetta Stone is the artifact that famously allowed scholars to finally decipher ancient Egyptian hieroglyphs. Everything you ever wanted to know about the Rosetta Stone : By studying the comet’s gas and dust,