Dr. Hörst Tweeted Image of Pieces of Moon and Mars in 2018

A piece of the moon and mars on one hand pic.twitter.com/NrsrdWOwd8

— Space Porn (@redditSpacePorn) June 12, 2021

That looks pretty fake. First I don't think they have brought back any sample from Mars yet. Second, they might not let you touch anything like that with bare hands (especially the Mars sample), let alone bringing them both that close.

— Piyush Soni (@piyush_soni) June 12, 2021