many challenges, including cosmic radiation, micro-meteoroids, and extreme temperatures. These challenges make it unlikely that a small craft could traverse the vast distances between stars without advanced technology that we don't currently possess. So, in summary, Dr. Greer's claims about the government having physical pieces of alien spacecraft are not credible, and there are significant scientific and logistical reasons to doubt their validity.
Here are the key facts extracted from the text:
1. Dr. Ross is an astrophysicist and expert in UFOs.
2. UFOs and aliens have gained mainstream attention, including in Congress.
3. Dr. Ross believes in the existence of non-physical reality based on his Christian beliefs.
4. Some UFO phenomena defy the laws of physics.
5. There are instances of UFOs crashing into Earth, leaving evidence but no debris.
6. UFO encounters often involve deception and are harmful.
7. Involvement in the occult is linked to higher UFO encounter incidence.
8. Dr. Ross emphasizes the importance of testing supernatural encounters.
9. David Fravor's testimony about UFOs was discussed.
10. Dr. Ross criticizes the credibility of claims of government cover-up of alien artifacts.
11. He questions the lack of tangible artifacts from UFOs.
12. Dr. Ross argues that it's not possible for small physical craft to travel interstellar distances.
Please note that these facts are extracted from the text, and some of them are opinions or perspectives expressed by Dr. Ross.