From Twitter https://twitter.com/drsekula: RT @NYTScience: The size of a softball, it's lumpy and splotchy with features only a mother could love. It's a baby universe. https://myaccount.nytimes.com/auth/login?URI=http://www.nytimes.com/2016/12/19/science/3d-printed-baby-universe.html?smid=tw-nytimesscience&smtyp=cur&_r=5