The reason why we haven’t found aliens yet could lie in our past. We often assume that advanced technology will make it easy for aliens to colonize space. But what if space exploration is always difficult, no matter how advanced you are? Let’s travel back to the colonization of Oceania over 5000 years ago to find parallels between ancient explorers and extraterrestrial civilizations. #inanutshell #kurzgesagt #kurzgesagt_inanutshell #learnwithtiktok #science #alientok #aliens #alien👽 #extraterrestrial

The universe could be like the frosting of a donut. A hyperdonut – also impossible to visualize for your brain. This, too, means that if you travel in a straight line, you would get back to where you started. But with fun complications. Let's look at them! #inanutshell #kurzgesagt #kurzgesagt_inanutshell #learnwithtiktok #spacetok #astronerds #astrophysics #astronomytok #outerspace #hyperdonut #spacetheories #universetok #universescience #infiniteuniverse

These are the five best black holes ... according to us! #inanutshell #kurzgesagt #kurzgesagt_inanutshell #learnwithtiktok #spacetok #astronerds #astrophysics #astronomytok #outerspace

On the scale of your cells, tattoo ink particles are huge – if you were the size of a cell, they’d range from big dogs to small office buildings. #kurzgesagt #tattoos #tattooscience #inanutshell #kurzgesagt_inanutshell #learnwithtiktok #biologytok #tattooartist #tattooartists