To determine if a supernova occurred near the Andromeda galaxy, we need to rely on astronomical observations and reports usually conducted by observatories and amateur astronomers. Supernovae are relatively rare events in any one particular galaxy, and their detection depends on timing, the area being monitored, and the sensitivity of the instruments involved.
The Andromeda galaxy, also known as M31, is the closest spiral galaxy to the Milky Way and is often studied extensively. If a supernova had occurred close to or within the Andromeda galaxy, it likely would have been reported by multiple observatories and shared within the astronomical community quickly due to the galaxy’s proximity and prominence.
To find real-time or recent information about such astronomical events, one could check credible sources such as the International Astronomical Union’s Central Bureau for Astronomical Telegrams (CBAT), online astronomy communities, or news from major observatories. Additionally, websites or forums dedicated to astronomy often track and discuss recent and notable cosmic occurrences.
Without access to specific observations or announcements from these sources, we cannot definitively say whether a supernova was observed near the Andromeda galaxy last night. However, if such an event did occur, it would likely be the subject of considerable attention from the global astronomical community.