Five misconceptions about black holes

TL;DR

This paper identifies and corrects common misconceptions about black holes, clarifying their true nature and addressing misunderstandings prevalent among non-specialists, with educational implications.

Contribution

It systematically analyzes and dispels five widespread misconceptions about black holes, providing accurate explanations for educational purposes.

Findings

Black holes are not necessarily formed from stellar collapse.

Black holes are not always very massive or dense.

Black holes do not absorb everything indiscriminately.

Abstract

Given the great interest that black holes arouse among non-specialists, it is important to analyse misconceptions related to them. According to the author, the most common misconceptions are that: (1) black holes are formed from stellar collapse; (2) they are very massive; (3) they are very dense; (4) their gravity absorbs everything; and (5) they are black. The objective of this work is to analyse and correct these misconceptions. This article may be useful as pedagogical material in high school physics courses or in introductory courses in undergraduate physics.