A nova is currently visible in the sky, and here's how to observe it

Since June 12, a new light source, discovered by the All-Sky Automated Survey for Supernovae (ASAS-SN), has appeared in the sky. Although initially too faint to be observed, it has grown in intensity over the days, revealing a cosmic event as powerful as it is devastating.

Officially named V462 Lupi, it has reached a magnitude of +5.7, making it visible to the naked eye if the sky above you is clear and cloudless. As for the origin of this light source, it is a classic nova. 

These occur within binary systems in which an extremely dense white dwarf sucks matter from its counterpart. Over time, this matter accumulates on its surface, causing a powerful thermonuclear explosion and producing a powerful light source traveling through space. However, unlike supernovae, which are among the most devastating explosions in the universe, this does not cause the destruction of the host star. In fact, this type of event can occur several times if the white dwarf's companion continues to supply matter. 

As a result, V462 Lupi has continued to increase in brightness since its explosion. For example, on June 21, at 2 p.m. (Eastern Time), it reached a magnitude of 5.6 and was visible without the aid of astronomical glasses or telescopes. 

According to Sebastián Otero, an observer with the American Association for Variable Stars (AAVSO), its rise is exceptional considering the initial magnitude of its progenitor of 22.3.

Rest assured, even though its southern declination is -40°, it remains observable from the northern United States. To observe it, you will need to look toward the constellation Lupus, as detailed in this image by Bob King. 

This is not the first time that this constellation has been home to such an important event. In 1006, this part of the sky witnessed a supernova explosion that reached magnitude -7 and was visible for more than three months. This event is notably reported in the chronicles of the medieval Persian philosopher and scientist Avicenna.

As you can see in this image, remnants of this cosmic event were found in 1960 with the help of the Chandra telescope. This clearly shows the magnitude of this explosion and the destruction of the host star.