There are some comets whose discovery has been a huge achievement for astronomers. One of them is Comet 67P/Churyumov-Gerasimenko. The European Space Agency's (ESA) historic Rosetta Mission flew very close

What you see in the picture is called a chullapa. A chullapa is essentially an ancient burial site. Chullapas were meticulously built by the Inca and pre-Inca cultures, such as the Colla people, over a