She was 91. Her granddaughter, Carolina Caeiro Fontela, confirmed her death, in a hospital, to Portugal’s national news agency, Lusa. She said Ms. Caeiro had a history of heart and lung problems.

Pew! Pew! ESO’s Very Large Telescope shoots lasers into the night. Space can be a wondrous place, and we've got the pictures to prove it! Take a look at our favorite space pictures here ...