Stephen Hawking believes there could be life in other parts of our galaxy.
Because of the size of the , it is  that life exists only on Earth, the famous said.
Hawking thinks that this life exists in a form.



world, cosmos, creation, nature  عالم‌ وجود، گيتي‌، جهان‌، كيهان‌
 
غير محتمل‌
 
expert in a particular branch of science عالم‌، دانشمند
 
almost certainly, very likelyمحتملا، شايد
 
old, ancient; primeval, from prehistoric times پيشين‌، قديم‌‌، اوليه‌، اصلي