If you place a ball on a towel and hold all ends of the towel, you'll see how the fabric of the towel warps accommodating the mass of the ball. So too it is in space.
Kui panna pall käterätikule ja hoida käterätikut otstest, siis on näha, kuidas rätik paindub, kohandades end palli ümber. Samasugune lugu on kosmosega.