This is a common question: what is the nearest star to the Earth that can explode as a supernova? Most people say Betelgeuse, a red supergiant in Orion, but there are several stars that are closer.
In the video below I answered this question as part of my weekly live video chat.
If you have an astronomy question you want answered, tune in to the live chat, which I usually do on Sundays at 15:00 Mountain time (21:00 UT). I might make a video of your Q&A!