# What are UFOs if they're NOT alien spacecraft?

**URL:** <https://boards.straightdope.com/t/what-are-ufos-if-theyre-not-alien-spacecraft/998108>\
**Category:** Great Debates\
**Created:** [February 26, 2024, 5:14pm UTC](https://boards.straightdope.com/t/what-are-ufos-if-theyre-not-alien-spacecraft/998108 "2024-02-26T17:14:16Z")\
**Posts on this page:** 1\
**Showing post:** 166

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**Author:** ![John\_DiFool](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/john_difool/32/19543_2.png) [@John\_DiFool](https://boards.straightdope.com/u/John_DiFool)\
**Post date:** [July 27, 2024, 6:32pm UTC](https://boards.straightdope.com/t/what-are-ufos-if-theyre-not-alien-spacecraft/998108/166 "2024-07-27T18:32:01Z")

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Quasi-off-topic, but so far nobody has bothered to start a new thread here, which surprises me.

Anyway, Perseverance found a weird rock on Mars which appears to contain similar features to Terran rocks which once were part of a floodplain:

> **[NASA’s Perseverance Rover Scientists Find Intriguing Mars Rock - NASA](https://www.nasa.gov/missions/mars-2020-perseverance/perseverance-rover/nasas-perseverance-rover-scientists-find-intriguing-mars-rock/)**
>
> The six-wheeled geologist found a fascinating rock that has some indications it may have hosted microbial life billions of years ago, but further research is

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