NASA Hubble Cold Case: A Dead Star May Have Given Birth to a New Planet

Astronomers revisiting old observations from NASA’s Hubble Space Telescope have uncovered a clue that may solve a decades-old cold case. A study published October 5 in Nature Astronomy reports evidence that the white dwarf HS 0209+0832 could be orbited by a second-generation planet. A white dwarf is the leftover core of a low-mass star that [...]