
NASA @NASA
The "rubble-pile" asteroid Bennu is covered in rocky debris, and is over 4.5 billion years old — but might harbor hints about the origins of life on Earth. 10 things to know before our @OSIRISREx spacecraft goes #ToBennuAndBack to collect a sample Oct. 20: https://t.co/zJVbH4KSy5 https://t.co/UNKc8s2iia — PolitiTweet.org