Som ET - 22 - Galaxy - Zooming in on a light echo - Video 2 This video sequence takes the viewer into the nearby starburst galaxy Messier 82, where a shell of light surrounding an exploding star is moving through interstellar space. The light was emitted from the supernova SN 2014J, which was first observed in January 2014. Nearly three years later, light from the blast can still be seen reverberating off of interstellar dust clouds — an effect called a light echo. Audio: Som ET - 22 - Galaxy Cr

New Views of Galaxy Messier 82 in Ursa Major | James Webb Space Telescope FriendsofNASA.org: This video showcases two new Webb views of M82. It is located just 12 million light-years away in the constellation Ursa Major. Despite being smaller than the Milky Way, M82 is five times as luminous as our home galaxy and forms stars ten times faster. M82 is classified as a starburst galaxy because it is forming new stars at a rate much faster than expected for a galaxy of its mass, especially at its ce