The term celestial navigation is identified in base64 scheme by the sequence Y2VsZXN0aWFsIG5hdmlnYXRpb24=, while the MD5 signature is equal to edc4fe2bddf9f856b471d07a54e516e0. The ASCII encoding of celestial navigation in hexadecimal notation is 63656c65737469616c206e617669676174696f6e.