Hubble Space Telescope Reaches 200,000 Orbit Milestone While Monitoring Supernova Athena

• NASA's Hubble Space Telescope completed its 200,000th orbit around Earth on September 19, 2026.
• The observatory is currently monitoring the galaxy cluster MACS J0417 to track the anticipated reappearance of supernova Athena.

Scientific Objectives

• Supernova Athena, originally discovered by the James Webb Space Telescope in 2025, is predicted to reappear by early March 2027.
• The MACS J0417 galaxy cluster acts as a natural gravitational lens, magnifying light from distant objects behind it.
• By timing the reappearance of the supernova, researchers aim to map the mass of the galaxy cluster and refine calculations regarding the expansion rate of the universe.