{"id": 200750929602019328, "lang": "en", "text": "Making large scale rocket propulsion landing work well is a critical step towards a fully reusable Mars transport system", "urls": [], "user": {"id": 44196397}, "id_str": "200750929602019328", "source": "<a href=\"http://twitter.com/download/iphone\" rel=\"nofollow\">Twitter for iPhone</a>", "deleted": false, "hashtags": [], "retrieved": "2017-08-16--08-03-17", "created_at": "Fri May 11 00:55:26 +0000 2012", "retweet_count": 82, "user_mentions": [], "favorite_count": 21, "legacy_imported": true}