Galaxy NGC 2525

Pictured here is the captivating galaxy NGC 2525. Located nearly 70 million light-years from Earth, this galaxy is part of the constellation of Puppis in the southern hemisphere. Hubble observed this galaxy to capture the appearance of an exploding star, a supernova. Hubble began observing SN 2018gv in February 2018. Hubble astronomers were using the supernova as part of a program to precisely measure the expansion rate of the universe. The supernova serves as a milepost maker to measure galaxy distances, a fundamental value needed for measuring the expansion of space. The supernova appears as a blazing, bluish star located on the galaxy's outer edge in the lower left portion of the frame. It initially outshone the brightest stars in the galaxy before fading out of sight.