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EV Lacertae

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description EV Lacertae Overview

EV Lacertae is a faint red-dwarf flare star in the constellation Lacerta, about 16.5 light-years from the Sun. On April 25, 2008, NASA's Swift satellite detected an exceptionally powerful stellar flare from it, thousands of times more energetic than the largest solar flare observed at that time. The event drew attention because a small, dim, rapidly rotating M-type star produced such intense magnetic activity. [NASA](https://www.nasa.gov/image-article/pipsqueak-star-unleashes-monster-flare/)

help EV Lacertae FAQ

What kind of star is EV Lacertae?

EV Lacertae is a faint red-dwarf flare star in the constellation Lacerta. It is located about 16.5 light-years from the Sun.

What happened to EV Lacertae on April 25, 2008?

NASA's Swift satellite detected an exceptionally powerful flare from the star on April 25, 2008. The event was reported as thousands of times more energetic than the largest solar flare.

Why is EV Lacertae called a flare star?

Red dwarfs such as EV Lacertae can undergo sudden magnetic outbursts that greatly increase their brightness and energy output. EV Lacertae became especially notable because of the extreme flare observed by Swift in 2008.

Is EV Lacertae close to the Solar System?

It is relatively close by stellar standards, at about 16.5 light-years from the Sun. Even at that distance, its 2008 flare was strong enough to be detected by NASA's Swift observatory.

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