Astronomer Vincent Lapeyrere works with 83 cm and 62 cm diameter telescope inside of the Grande Coupole or Great Refractor at Meudon's observatory park on January 30, 2026. (Photo by Dimitar DILKOFF / AFP via Getty Images)

This photograph shows the Solar Observatory Tower at Meudon's observatory park on January 30, 2026. (Photo by Dimitar DILKOFF / AFP via Getty Images)

This photograph shows the 83 cm and 62 cm diameter telescope inside of the Grande Coupole or Great Refractor at Meudon's observatory park on January 30, 2026. (Photo by Dimitar DILKOFF / AFP via Getty Images)

This photograph taken on January 30, 2026, shows the 83 cm + 62 cm diameter telescope inside of the Grande Coupole or Great Refractor at Meudon's observatory park on January 30, 2026. (Photo by Dimitar DILKOFF / AFP via Getty Images)

Astronomer Isabelle Buale ajusts the spectroheliograph at Meudon's observatory park on January 30, 2026. (Photo by Dimitar DILKOFF / AFP via Getty Images)

This photograph shows the 83 cm and 62 cm diameter telescope inside of the Grande Coupole or Great Refractor at Meudon's observatory park on January 30, 2026. (Photo by Dimitar DILKOFF / AFP via Getty Images)

Astronomer Vincent Lapeyrere works with a 83 cm and 62 cm diameter telescope inside of the Grande Coupole or Great Refractor at Meudon's observatory park on January 30, 2026. (Photo by Dimitar DILKOFF / AFP via Getty Images)

This photograph shows a general view of Meudon's observatory on January 30, 2026. (Photo by Dimitar DILKOFF / AFP via Getty Images)