Dr. John Gideon Hartnett is an Australian physicist and cosmologist, and a Christian with a biblical creationist worldview. He received a B.Sc. (Hons) and Ph.D. (with distinction) in Physics from The University of Western Australia, W.A., Australia. He is currently an Australian Research Council (ARC) Discovery Outstanding Researcher Award (DORA) fellow at the University of Adelaide, where he is currently an Associate Professor. He has published more than 200 papers in scientific journals, book chapters and conference proceedings.  See list of publications on John's C.V..
A/Prof. John Gideon Hartnett
Hartnett took interest in cosmology at a young age, and that interest led into many other scientific interests. He says, "At that time, I would have described myself as an atheist, believing that the big bang had all the answers, although there was actually very little in the way of specifics about the models. It was just that that drove me into further investigation."
John became a Christian while he was an undergraduate at the University of Western Australia. There he met with many other Christian men, where he was challenged to read Genesis 1. John says, "When i started reading it, it was like — wow, unbelievably amazing. Straight away it struck me that this could be completely consistent with the scientific evidence and the knowledge I had at that time. I was being converted into a creationist there and then."
Hartnett's main interests are in the development of ultra-stable cryogenically cooled microwave oscillators based upon the sapphire crystal, ultra low-noise radar, tests of fundamental theories of physics, and cosmological implications. John has a particular interest however in cosmology from a creationist perspective, including a theory stating there is no need for an assumption that claims the existence of dark matter in the universe. With this statement along with many others he has published over 200 papers in scientific journals and currently holds two patents.
John Hartnett has never been afraid to show his faith. In his seminars he always includes his point of view along with his strong beliefs in creation. He is known as an excellent communicator of Biblical creationism in his publications. Hartnett has developed models to explain the creation of the 'heavens' during the creation week; these models offer an answer to the question, "how can we see distant starlight, that is supposedly million of light-years away, in a young universe, which the Bible infers is only 6,000 years old?"
In his presentations and writings, Hartnett goes into his research with much detail and enthusiasm. But it all ends in one purpose, to show each person that God's word can be trusted in all things. Many people like to accuse Hartnett of denying reality. But John quickly explains to them that if you look at the universe, there is no difference then if you were to look at a fossil record. He states, "It's the interpretation of the evidence. Sure, distant stars and galaxies might be millions of light-years away, but that doesn't mean that it took the light millions of years, by our standards, to get here. A light-year is a measurement of distance, not time."
- Recent Cosmic Microwave Background data supports creationist cosmologies by John G. Hartnett. Journal of Creation 15(1):8–12 April 2001
- Cosmologists Can’t Agree and Are Still In Doubt! by John G. Hartnett. First published:TJ 16(3):21–26 December 2002
- The heavens declare a different story!By John G. Hartnett First published: TJ 17(2):94–97 August 2003
- The Big Bang fails another testby John G. Hartnett 15 September 2006
- Echoes of the big bang or noise?By John G. Hartnett First published: TJ 18(2):11–12 August 2004
- Dark matter and a cosmological constant in a creationist cosmology?by John G. Hartnett First published in: Journal of Creation 19(1):82–87 April 2005
- Has ‘dark matter’ really been proven? by John G. Hartnett 8 September 2006
- Quasar with enormous redshift found embedded in nearby spiral galaxy with far lower redshift: unsolvable riddle for big bang astronomy by John G. Hartnett 12 January 2005
- Hubble, Bubble, the Big Bang in Trouble
- Starlight Time and the New Physics
- In the Middle of the Action
- Biography submitted by John Hartnett to the Northwest Creation Network, December 21, 2013.
- John Gideon Hartnett:CV Accessed December 22, 2013.
- Exploding the Big Bang An interview with creationist physicist/cosmologist John Hartnett by Gary Bates. Creation 25(4):37–39 September 2003
- Biography by Creation Ministries International.