There are now three monoliths of unknown origin around the world, with the third appearing in California on Wednesday. @thisisinsider has been keeping tabs on each structure, and explored the (small) possibility of alien involvement.

The metal monolith recently documented in the Utah desert on November 18 vanished after sparking comparisons to "2001: A Space Odyssey." https://www.insider.com/strange-metal-monolith-found-in-utah-desert-has-mysteriously-vanished-2020-11
A Utah state helicopter crew was counting sheep when it discovered the mysterious metal monolith in a red-rock desert area. Google Earth maps showed the structure appeared sometime between August 2015 and October 2016. https://www.insider.com/utah-helicopter-patrol-found-mysterious-metal-obelisk-in-the-desert-2020-11
A second monolith was discovered in Romania, on the same day the Utah monolith vanished. https://www.insider.com/second-monolith-like-utah-one-discovered-romania-puzzling-2020-12
On Wednesday, the third metal monolith appeared in California, almost exactly matching the previously found monoliths. https://www.insider.com/third-monolith-found-california-matches-utah-romania-2020-12
The mysterious appearances of the monoliths immediately drew theories of extra-terrestrial origins... so why haven't we found aliens yet?
If we were able to find aliens, could we even communicate with them? A computer scientist weighs in.
Scientists have acknowledged that alien life likely exists, or has existed in the past.
In a new study, two astronomers have identified 1,004 sun-like stars that could all have habitable Earth-like planets in their orbits. https://www.businessinsider.com/aliens-on-nearby-stars-planets-could-see-earth-life-2020-10
And a @NASA scientist discovered that Jupiter's oceanic moon Europa (a prime candidate for alien life) might glow in the dark. https://www.businessinsider.com/nasa-jupiter-oceanic-moon-europa-radioactive-glow-2020-11
Follow @thisisinsider for all you need to know about the monoliths AND space activity.
https://www.insider.com/monolith-timeline-appearances-disappearances-californai-utah-romania-2020-12
