God is Life, He's Everything, including a billion years old, and yes He is Alive! So its not to hard to believe "the life form that may be a billion years old." That said, if what you are saying is so obvious, then why wasn't it mentioned by one of the Scientists studying the issue?
Various "scientists" each have their own areas of expertise. A astrophysicist who studies the chemical makeup of stars has a background completely different than an geologist. Actually, scientists are very conservative, and would do their best downplay the discovery. I gather most of the "scientists" are really engineers who are analyzing the data. So any information is most certainly downplayed.