LOMBARD, Ill. (AP) — The 90-year-old mother of a NASA astronaut aboard the international space station died Wednesday when a train struck her vehicle, police said.

A preliminary investigation showed that Rose Tani, the mother of astronaut Daniel M. Tani, stopped behind a school bus pausing at a train crossing, Raymond Byrne, police chief in this Chicago suburb, said in a statement. She drove around the bus, bypassing the lowered crossing gate, he said.

The train struck Tani's vehicle on the passenger side and pushed it down the tracks before stopping. Paramedics took Tani to a hospital, where she was pronounced dead.