Type Ia supernovae are explosions of dead white dwarf stars, and they are useful because they have roughly the same intrinsic brightness. Astronomers compare how bright one looks from Earth with how bright it should be, which gives its distance and that of its host galaxy. This galaxy, about 600 million light-years away in Gemini, hosts SN 2022aajn, a supernova discovered in November 2022 and photographed here about two months after that. Dust between galaxies makes distant supernovae look fainter and redder, which can throw off distance estimates. To separate the two effects, Hubble will survey 100 Type Ia supernovae across seven wavelength bands, since infrared light passes through dust more easily than visible light. The result should sharpen measurements of how fast the universe is expanding.

Hampi is a UNESCO World Heritage Site in Karnataka, India, with more than 1,600 surviving remains spread over 4,100 hectares. It was the capital of the Vijayanagara Empire from 1336 to 1565. Travellers from Persia and Portugal described it as a prosperous, wealthy and grand city with temples, markets and farms along the Tungabhadra River. By 1500 it was estimated to be the world's second-largest city after Beijing, and probably India's richest at the time. In 1565 a coalition of Muslim sultanates defeated the Vijayanagara Empire, its capital was conquered and destroyed, and the city was left in ruins. Hampi remains a religious centre, with the active Virupaksha Temple at its heart.