RT @AAOastro: So say we all! RT @drsimmo: This gets cooler each time I watch it: The Sky over Siding Spring Observatory: youtu.be/g8h2WB8Cov8
RT @AAOastro: So say we all! RT @drsimmo: This gets cooler each time I watch it: The Sky over Siding Spring Observatory: youtu.be/g8h2WB8Cov8