NASA's Europa Clipper launched on October 14, 2024, toward Jupiter's icy moon Europa, and it carries an etched message for any future finder. The plate features the word for water spoken in 103 languages, recorded from people with personal connections to water, and shown as sound waveforms. The plate also engraves the hydrogen and hydroxyl lines, two radio frequencies that combine chemically to make water. Scientists call the range of frequencies between these lines the water hole, where the first radio searches for alien signals were focused. Hydrogen was chosen because it is the most abundant element in the universe. The Drake Equation is also included to estimate how many communicating civilizations might exist in the galaxy.

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.