The term celestial sphere is identified in base64 scheme by the sequence Y2VsZXN0aWFsIHNwaGVyZQ==, while the MD5 signature is equal to 3ff5f6e1c0a69af5649bdfcda124cc39. The ASCII encoding of celestial sphere in hexadecimal notation is 63656c65737469616c20737068657265.